CN106316718A - Preparation method of slow release urea adopting lignin and microelement coating material - Google Patents
Preparation method of slow release urea adopting lignin and microelement coating material Download PDFInfo
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- CN106316718A CN106316718A CN201610762511.6A CN201610762511A CN106316718A CN 106316718 A CN106316718 A CN 106316718A CN 201610762511 A CN201610762511 A CN 201610762511A CN 106316718 A CN106316718 A CN 106316718A
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- Prior art keywords
- fertilizer
- lignin
- release
- trace element
- slow
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- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 181
- 229920005610 lignin Polymers 0.000 title claims abstract description 101
- 239000004202 carbamide Substances 0.000 title claims abstract description 93
- 239000000463 material Substances 0.000 title claims abstract description 77
- 238000000576 coating method Methods 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 239000011248 coating agent Substances 0.000 title claims abstract description 11
- 239000011247 coating layer Substances 0.000 claims abstract description 27
- 230000000694 effects Effects 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 18
- 235000015097 nutrients Nutrition 0.000 claims abstract description 16
- 238000005516 engineering process Methods 0.000 claims abstract description 13
- 238000013270 controlled release Methods 0.000 claims abstract description 7
- 239000012792 core layer Substances 0.000 claims abstract description 6
- 239000000654 additive Substances 0.000 claims abstract description 5
- 239000003337 fertilizer Substances 0.000 claims description 282
- 239000008187 granular material Substances 0.000 claims description 98
- 239000011573 trace mineral Substances 0.000 claims description 98
- 235000013619 trace mineral Nutrition 0.000 claims description 98
- 235000013877 carbamide Nutrition 0.000 claims description 88
- 239000003795 chemical substances by application Substances 0.000 claims description 48
- 239000010881 fly ash Substances 0.000 claims description 38
- 239000003921 oil Substances 0.000 claims description 21
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 20
- 239000000843 powder Substances 0.000 claims description 20
- 238000005538 encapsulation Methods 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 18
- 230000033001 locomotion Effects 0.000 claims description 18
- 239000000346 nonvolatile oil Substances 0.000 claims description 15
- 238000012216 screening Methods 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 14
- 230000035939 shock Effects 0.000 claims description 14
- 239000000126 substance Substances 0.000 claims description 11
- 239000010410 layer Substances 0.000 claims description 10
- 239000012528 membrane Substances 0.000 claims description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 9
- 210000000988 bone and bone Anatomy 0.000 claims description 8
- 235000021049 nutrient content Nutrition 0.000 claims description 8
- 239000002023 wood Substances 0.000 claims description 8
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 7
- 239000004327 boric acid Substances 0.000 claims description 7
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 6
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 5
- 229960001763 zinc sulfate Drugs 0.000 claims description 5
- 230000000996 additive effect Effects 0.000 claims description 4
- -1 and wherein Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 2
- 230000001934 delay Effects 0.000 claims description 2
- 238000013461 design Methods 0.000 claims description 2
- 235000013399 edible fruits Nutrition 0.000 claims description 2
- 238000005457 optimization Methods 0.000 claims description 2
- IPCSVZSSVZVIGE-UHFFFAOYSA-N palmitic acid group Chemical group C(CCCCCCCCCCCCCCC)(=O)O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 claims description 2
- 230000006641 stabilisation Effects 0.000 claims description 2
- 238000011105 stabilization Methods 0.000 claims description 2
- 210000002700 urine Anatomy 0.000 claims description 2
- 210000000582 semen Anatomy 0.000 claims 2
- 125000005619 boric acid group Chemical group 0.000 claims 1
- 238000005469 granulation Methods 0.000 claims 1
- 230000003179 granulation Effects 0.000 claims 1
- 235000013311 vegetables Nutrition 0.000 claims 1
- 238000011161 development Methods 0.000 abstract description 4
- 201000010099 disease Diseases 0.000 abstract description 4
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 4
- 235000016709 nutrition Nutrition 0.000 abstract description 3
- 230000035764 nutrition Effects 0.000 abstract description 3
- 235000018343 nutrient deficiency Nutrition 0.000 abstract description 2
- 208000024891 symptom Diseases 0.000 abstract description 2
- 239000002689 soil Substances 0.000 description 27
- 239000011701 zinc Substances 0.000 description 15
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 14
- 229910052725 zinc Inorganic materials 0.000 description 14
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 13
- 229910052796 boron Inorganic materials 0.000 description 13
- 238000013268 sustained release Methods 0.000 description 9
- 239000012730 sustained-release form Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 8
- 229920005989 resin Polymers 0.000 description 8
- 239000011347 resin Substances 0.000 description 8
- 238000007689 inspection Methods 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 241000196324 Embryophyta Species 0.000 description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 239000010883 coal ash Substances 0.000 description 4
- 230000009931 harmful effect Effects 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 229920002521 macromolecule Polymers 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 230000012010 growth Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- LDVVTQMJQSCDMK-UHFFFAOYSA-N 1,3-dihydroxypropan-2-yl formate Chemical compound OCC(CO)OC=O LDVVTQMJQSCDMK-UHFFFAOYSA-N 0.000 description 1
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 description 1
- 241000972773 Aulopiformes Species 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- 208000002720 Malnutrition Diseases 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- RSWGJHLUYNHPMX-ONCXSQPRSA-N abietic acid Chemical compound C([C@@H]12)CC(C(C)C)=CC1=CC[C@@H]1[C@]2(C)CCC[C@@]1(C)C(O)=O RSWGJHLUYNHPMX-ONCXSQPRSA-N 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- KMQAPZBMEMMKSS-UHFFFAOYSA-K calcium;magnesium;phosphate Chemical compound [Mg+2].[Ca+2].[O-]P([O-])([O-])=O KMQAPZBMEMMKSS-UHFFFAOYSA-K 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000035784 germination Effects 0.000 description 1
- 239000004021 humic acid Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000000618 nitrogen fertilizer Substances 0.000 description 1
- 230000014075 nitrogen utilization Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 208000015380 nutritional deficiency disease Diseases 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 235000019515 salmon Nutrition 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000012173 sealing wax Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- NFMWFGXCDDYTEG-UHFFFAOYSA-N trimagnesium;diborate Chemical compound [Mg+2].[Mg+2].[Mg+2].[O-]B([O-])[O-].[O-]B([O-])[O-] NFMWFGXCDDYTEG-UHFFFAOYSA-N 0.000 description 1
- 239000011686 zinc sulphate Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/90—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting the nitrification of ammonium compounds or urea in the soil
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C9/00—Fertilisers containing urea or urea compounds
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/30—Layered or coated, e.g. dust-preventing coatings
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pest Control & Pesticides (AREA)
- Soil Sciences (AREA)
- Fertilizers (AREA)
Abstract
The invention relates to slow release urea adopting a lignin and microelement coating material. The slow release urea is realized by adopting lignin and microelements as a coating material and using a unique solvent-free coating technology. The slow release urea consists of a core layer and a coating layer. The core layer is urea while the coating layer comprises the lignin, the microelements and additives thereof. Corresponding controlled release parameters can be designed according to crop nutrition laws and requirements, and release of nutrients is controlled by adjusting coating times and amount, coating thickness and the like. The preparation method is a good innovation, and the coating material has a slow and controlled release effect, has the characteristic of biodegradability and is incomparable when compared with other slow release materials. Intelligent release can be realized, nutrient deficiency symptoms of crops and physiological diseases of crops can be eliminated, the yield can be significantly increased, and the quality can be improved. The development of ecological agriculture is facilitated, and the market competitiveness is very high. The method fills the domestic blank and the technology is in a leading position at home and abroad.
Description
Technical field
The invention belongs to technical field of fertilizers, relate to degradable lignin coated slow-release urea fertilizer, particularly to a kind of wood
Quality and the preparation method of trace element lapping slow-release carbamide.
Background technology
Carbamide has greatly very important status because of its nitrogen content height, consumption in the agricultural production of countries in the world, but
The utilization rate of carbamide but only has about 30%；The nitrogenous fertilizer of this high cost with low efficiency not only affects crop yield and quality, and leads
Cause the wasting of resources, destroy ecological environment, affect human health；Along with pay attention to day by day ecological environmental protection, improve urea efficiency and
Utilization rate has become the key subjects of various countries' common concern.
Slow controlled release coated carbamide has been carried out the research of decades in the U.S., Japan and other countries, produces and apply；70 years 20th century
After Dai, abroad delaying controlled release coated carbamide through numerous studies, nitrogen utilization efficiency has brought up to 50% to 60%, wherein slow release or
Control release urea technology is exactly maximally effective potentiation means；And do not affected by complicated factors such as soil types, it has slow release
Long-acting, can increase substantially utilization rate of fertilizer, can economize on resources in same origin equal production volume level, reduces fertilizer and executes
Consumption, reduces cost, increases peasant income.
The research and development of China's release-controlled coated urea can be divided mainly into three major types, and the first big class is with inorganic matter as lapping
Research and development；The research work of calcium magnesium phosphate coated urea etc. has been carried out as far back as Chinese Academy of Sciences's soil investigation in 1974
Make；Equations of The Second Kind is the exploitation with biodegradable macromolecule resin as coated fertilizer；As Xi'nan College of Forestry develops with carbamide
For core, the slow-release carbamide with Colophonium, Lac, sanlose as peplos；Northwest University develops High hydrophilous resin
Coated carbamide with ethyl cellulose dimension coated fertilizer；Sun Ming develops by force the thin film carbamide etc. with humic acid as coated fertilizer；
3rd class is the exploitation with nonbiodegradable macromolecule resin as coated fertilizer；Such as Ornamental Plants of Beijing District scientific research institutions in 1985 and north
Capital city chemical institute develops phenolic resin compound fertilizer etc..
Sulfur bag slow-release carbamide and the application of coated with resin slow-release carbamide are relatively broad at present；Sulfur bag slow-release carbamide occupies special status,
This is not only coated fertilizer but also be nutrient mainly due to sulfur itself, and cost is relatively low；The general nitrogen content of sulfur coated urea is
36%~37%；But shortcoming is that not only production process is complicated, and content is the lowest, and core fertilizer dissolution rate is fast, surface sealing wax easily quilt
Soil Microorganism decomposes, thus affects sustained release performance；Life-time service easily causes soil acidification simultaneously；Coated with resin slow-release carbamide
It it is the product using various different resin materials that carbamide is wrapped to form；Its coating layer key component is two polycyclopentadithio.henes
Alkene and the copolymer of glycerol, the weight of coating layer accounts for the 10%～15% of fertilizer gross weight；The slow release fertilizer of coated with resin
There is good control release performance, slow Releasing nutrient can be controlled；Disadvantage is expensive, and coated fertilizer is difficult to by soil
Middle microbial decomposition, easily causes pedo relict, and therefore life-time service easily causes environmental pollution, has a significant impact health.
In coated slow release fertilizer research field, " the fertile bag fertilizer " that China fertilizer researcher proposes, represent this field following and grind
Study carefully direction；The present invention is based on this thought, it is intended to the coated slow-release urea that exploitation has the following characteristics that；1, coated carbamide must
Must be with low cost, the most not only coated fertilizer is with low cost, and packing technology also wants simple；2, coated fertilizer must be able to biology can
Degraded, i.e. staying the coated fertilizer in soil after release can be degraded by microorganisms or decompose；3, lapping itself also can conduct
Fertilizer, provides nutrition to plant；4, thickness or the composition of lapping are regulated, the release speed of scalable or control coated carbamide
Rate；Therefore, exploitation degradable function type coated slow-release urea just seems even more important, is relatively suitable for the basic demand of the present invention；
Both having improve utilization rate of fertilizer, and decreased again environmental pollution, nutrition is comprehensive again, disease-resistant increases production again, is particularly suitable for the national conditions of China,
Development prospect is wide.
The technology of the present invention be use lignin and trace element as coated fertilizer, and by the solvent-free film-coating technique of uniqueness
Realize；Select low cost, wide and degradable lignin material of originating, overcome existing macromolecule resin coated fertilizer universal
Cost is high, and the drawback of coated fertilizer difficult degradation after use；Having simplification program with fluid bed technique for packing, parcel uniformly, becomes
Product rate high advantage, can significantly reduce fertilizer preparation cost, in use, fertilizer nutrient along with lignin coating layer by
Step degraded realizes intellectuality release.
The technology of the present invention is that control release urea is made up of core layer and coating layer；Described core layer is carbamide, and coating layer is wooden
Element and trace element and additive thereof；Use degradable lignin material as the coated fertilizer of chemical fertilizer, add trace element fertilizer
Material material and corresponding additive, can design corresponding controlled release parameter according to crop alimentary rule and demand, by adjusting peplos
Number of times and consumption, membrane wrapping thickness etc. control the release of nutrient, by the optimization of coated fertilizer Yu coating process, by these technique
Can control the release natural law of nutrient in coated urea, can produce fertilizer efficiency effect duration according to crop cycle difference is 60
My god, 90 days, the lignin coated slow-release urea of 120 days.
The technology of the present invention be thus designed with lignin and trace element as coated fertilizer prepare slow-release carbamide be one very well
Innovation, the existing slow controlled-release effect of this coated fertilizer, have again biodegradable feature, be that other slow-release materials are incomparable
's；Coated fertilizer nutrient not only can be made to realize intellectuality release along with the degraded of lignin, the penetrating of soil can be obviously improved
Property, increase the content of organic matter, beneficially beneficial microorganism growth；Add trace-element fertilizer simultaneously and can solve crops nutritional deficiency disease
Shape and plant physiological disease treating, can significantly improve yield, improving quality, have multiple efficacies；Agriculture sustainable production can be promoted, have
It is beneficial to the development of the ecological agriculture, there is the strongest market competitiveness；The present invention has filled up domestic blank, and this technology is at home and abroad located
In leading position.
Summary of the invention
The present invention is the fluid bed coated fertilizer technology as raw material with lignin and trace element；Raw material is used to prepare granule
Tiny, the lignin powder body of homogeneous grain diameter and trace element material, with the air of flowing as carrier, by lignin and thin of micro-fertilizer
In grain band fluidized bed, collide with in stabilization fluid state fertiliser granulates, enter vaporific binding agent from bed side spray simultaneously, make wooden
Plain and micro-fertile granule is bonded in fertilizer surface by collision, and continuous operation makes integument constantly thicken, thus it is double to realize preparation
The purpose of layer coated urea.
The present invention is achieved through the following technical solutions:
A kind of lignin of the present invention and the slow-release carbamide of trace element lapping, it is characterized in that and includes fertilizer and bag
Film fertilizer, the skeleton being material construction fertilizer coating with lignin and trace-element fertilizer.
Lignin of the present invention and the slow-release carbamide of trace element lapping, also include sealing coated fertilizer micropore
The sealer closed and firming agent, this sealer is fixed oil, palmitic one, and firming agent is flyash.
Lignin of the present invention and the slow-release carbamide of trace element lapping, raw material is carbamide, trace element be boric acid,
Zinc sulfate, wherein, boric acid, the mass ratio of zinc sulfate are 1:0.8-2.
The preparation technology of the slow-release carbamide of lignin of the present invention and trace element lapping, comprises the following steps: with
Lignin and the skeleton that trace element is material construction fertilizer coating, closed micropore by sealer.
The preparation method of the slow-release carbamide of lignin of the present invention and trace element lapping, using flyash as solidification
Agent prevents the adhesion in encapsulation process between fertiliser granulates.
The slow-release carbamide preparation method of lignin of the present invention and trace element lapping, it is characterised in that: include with
Lower step:
(1) screening: screen by the fertiliser granulates of peplos so that it is particle diameter is basically identical；
(2) peplos: coated fertilizer uses lignin and micro-fertile structure membrane bone frame, closes with sealer, and flyash is as solid
Agent face powder prevents adhesion, and peplos uses granulating method coating process, first fertiliser granulates is heated to 40-45 DEG C, then will heating
Fertiliser granulates surface uniformly it is sprayed onto by spray gun, subsequently by micro-fertilizer, flyash and wooden to 115-125 DEG C of sealer being in a liquid state
Element is dividedly in some parts in granulating disc and carries out wrapping up, mixing；
(3) blanking: coated fertilizer is delivered to finished product screen extension set by conveyer belt after completing by peplos；
(4) finished product screening: sieve with finished product screen extension set；
(5) check, pack: total nitrogen nutrient content and sustained release performance to every batch of product are measured, up to standard after pack.
Step (2) specifically includes:
The first step: a certain amount of granulated fertilizer is preheated in encapsulation tool 40-45 DEG C, adds the 115-125 DEG C of envelope being in a liquid state
Closing agent, its consumption is the 0.5-1% of granulated fertilizer weight, turns to fertiliser granulates surface and form binding liquid in encapsulation tool
Layer；
Second step: first trace element powder is uniformly spread in rotating circular disk on the fertiliser granulates of motion, trace element material
Consumption is the 1-2% of granulated fertilizer weight, turns to trace element material and is wrapping on fertiliser granulates；Continue heating to keep
Temperature 40-45 DEG C, then made on the fertiliser granulates that firming agent is uniformly spread in rotating circular disk move add flyash, flyash
The 2-5% that consumption is granulated fertilizer weight, under the effect of its firming agent, and solidify to form shock resistance, wear-resisting peplos
Layer, completes peplos for the first time；
3rd step: continue second time oil spout, on the fertiliser granulates of peplos trace element lignin material being uniformly spread to motion,
The consumption of lignin material is the 5-8% of granulated fertilizer quality, turns to lignin material and is wrapping on fertiliser granulates, continues
Continuous heating keeps temperature 40-45 DEG C, then makees, adding flyash, the fertiliser granulates that firming agent is uniformly spread in rotating circular disk move
On, under the effect of its firming agent, and it solidify to form shock resistance, wear-resisting coating layer, until trace element and lignin material
All being wrapped on fertiliser granulates, complete second time peplos, the functional type preparing required lignin and trace element peplos delays
Release carbamide；
4th step: different according to designed fertilizer control release natural law, crop demand nutrient is different with ratio, is sequentially repeated many
Secondary, until multilamellar trace element and lignin material are all wrapped on fertiliser granulates, coating layer solidifies, and also can prepare required
Delta wood quality and trace element peplos functional type slow-release carbamide.
The invention has the beneficial effects as follows:
(1) there is intelligent slow-release function, widely applicable: to be suitable for different types of soil and crops；
(2) regulation soil acidity or alkalinity, increases the fertility of soil: can increase the soil organism, improve Soil structure, effectively prevent soil
Earth hardens；
(3) utilization rate of fertilizer is improved: nutrient discharges slowly in soil, decreases loss；
(4) fertilizer efficiency is lasting, long-term, stable: be able to continuously supply plant in the whole trophophase demand to nutrient；The most a large amount of
Using will not " burn seedlings "；Decrease quantity and the number of times of fertilising, cost-effective；Soil can slowly decompose or degrade, completely
It is dissolved in water, nontoxic, germination and plant growth are had no effect, does not produce residual；
(5) solve the nutritional deficiency symptom of crops: the trace element such as the boron of interpolation, zinc are greatly increased plant stress-resistance ability, strengthen
Disease-resistant performance；It is greatly improved yield and fruit quality simultaneously.
Four, detailed description of the invention
Embodiment 1: the preparation method step of lignin and trace element lapping slow-release carbamide is:
(1) screening: for ensureing envelope mass, it is uniform that peplos crosses range request fertiliser granulates, it is therefore desirable to by the carbamide of peplos
Grain screens so that it is particle diameter is basically identical；
(2) peplos: coated fertilizer uses lignin and trace element to build membrane bone frame, close with Petiolus Trachycarpi oil, and flyash is made
Adhesion is prevented for firming agent face powder；These materials all have degradability or harmless to soil, will not produce bad to soil
Impact；Peplos uses granulating method coating process, first fertiliser granulates is heated to 40 DEG C, then will warm up 120 DEG C and is in a liquid state
Petiolus Trachycarpi oil is uniformly sprayed onto fertiliser granulates surface by spray gun, subsequently trace element and lignin is dividedly in some parts disk and makes
Grain machine carries out wrapping up, mixing；
The first step: a certain amount of granulated fertilizer carbamide is preheated in encapsulation tool 40 DEG C, adds Petiolus Trachycarpi oil, and its consumption is granule
The 1% of weight of fertilizer, turns to fertiliser granulates surface in encapsulation tool and forms bonding liquid layer；
Second step: first the trace element powder such as boron fertilizer, zinc fertilizer is uniformly spread in rotating circular disk on the fertiliser granulates of motion, trace
The consumption of element material is the 1% of granulated fertilizer weight, turns to trace element material and is wrapping on fertiliser granulates；Continue to add
Heat keeps temperature 40 DEG C, then makees add flyash on the fertiliser granulates that firming agent is uniformly spread in rotating circular disk move, fine coal
Consumption is granulated fertilizer weight the 3% of ash, under the effect of its firming agent, and solidify to form shock resistance, wear-resisting coating layer,
Completing peplos for the first time, wherein, boron fertilizer, the weight ratio of zinc fertilizer are 1:0.8；
3rd step: continue second time oil spout, is uniformly spread to lignin material on the fertiliser granulates of parcel trace element of motion,
The consumption of lignin material is the 8% of granulated fertilizer quality, turns to lignin material and is wrapping on fertiliser granulates；Continue to add
Heat keeps temperature 40 DEG C, then makees add flyash on the fertiliser granulates that firming agent is uniformly spread in rotating circular disk move, at it
Under the effect of firming agent, and it solidify to form shock resistance, wear-resisting coating layer, until trace element and lignin material are all wrapped up
On fertiliser granulates, complete second time peplos, prepare required lignin and trace element coated slow-release urea；
(3) blanking: coated fertilizer is delivered to finished product screen extension set by conveyer belt after completing by peplos；
(4) finished product screening: sieve with finished product screen extension set；
(5) inspection: total nitrogen nutrient content and sustained release performance to every batch of product are measured；Pack after up to standard, every batch of product
The amount of product is 10 tons；
(6) subpackage；Formally pack by automatic packer；
The physical and chemical index of release-controlled coated urea.
Embodiment 2: the slow-release carbamide preparation method step of lignin and trace element lapping is:
(1) screening: for ensureing envelope mass, it is uniform that peplos crosses range request fertiliser granulates, it is therefore desirable to by the carbamide of peplos
Grain screens so that it is particle diameter is basically identical；
(2) peplos: coated fertilizer uses lignin and trace element to build membrane bone frame, close with fixed oil, and flyash is made
Adhesion is prevented for firming agent face powder；These materials all have degradability or harmless to soil, will not produce bad to soil
Impact；Peplos uses granulating method coating process, first fertiliser granulates is heated to 45 DEG C, then will warm up 115 DEG C and is in a liquid state
Fixed oil is uniformly sprayed onto fertiliser granulates surface by spray gun, micro-fertilizer (adding flyash etc.) and lignin is layered in batches subsequently
Join and granulating disc is carried out wrap up, mix；
The first step: by a certain amount of granulated fertilizer carbamide, is preheated to 45 DEG C in encapsulation tool, adds fixed oil, and its consumption is
The 0.5% of grain weight of fertilizer, turns to fertiliser granulates surface in encapsulation tool and forms bonding liquid layer；
Second step: first the trace element powder such as boron fertilizer, zinc fertilizer is uniformly spread in rotating circular disk on the fertiliser granulates of motion, trace
The consumption of element material is the 1.5% of granulated fertilizer weight, turns to micro-fertile material and is wrapping on fertiliser granulates；Continue heating
Kept temperature 45 C, then make on the fertiliser granulates that firming agent is uniformly spread in rotating circular disk move add flyash, flyash
Consumption is granulated fertilizer weight 2%, under the effect of its firming agent, and solidify to form shock resistance, wear-resisting coating layer, complete
Becoming peplos for the first time, wherein, boron fertilizer, the weight ratio of zinc fertilizer are 1:1；
3rd step: continue second time oil spout, is uniformly spread to lignin material on the fertiliser granulates wrapping up micro-fertilizer of motion, wooden
The consumption of cellulosic material is the 5% of granulated fertilizer quality, turns to lignin material and is wrapping on fertiliser granulates；Continue heating to protect
Hold temperature 45 C, then make, on the fertiliser granulates that firming agent is uniformly spread in rotating circular disk move, to solidify at it adding flyash
Under the effect of agent, and it solidify to form shock resistance, wear-resisting coating layer, until trace-element fertilizer and lignin material are all wrapped up
On fertiliser granulates, complete second time peplos, prepare required lignin and micro-fertile double-deck coated slow-release urea；
(3) blanking: coated fertilizer is delivered to finished product screen extension set by conveyer belt after completing by peplos；
(4) finished product screening: sieve with finished product screen extension set；
(5) inspection: total nitrogen nutrient content and sustained release performance to every batch of product are measured；Pack after up to standard, every batch of product
The amount of product is 10 tons；The physical and chemical index of release-controlled coated urea meets；
(6) subpackage；Formally pack by automatic packer.
Embodiment 3: the slow-release carbamide preparation method step of lignin and trace element lapping is:
(1) screening: for ensureing envelope mass, it is uniform that peplos crosses range request fertiliser granulates, it is therefore desirable to by the carbamide of peplos
Grain screens so that it is particle diameter is basically identical；
(2) peplos: coated fertilizer uses lignin and trace-element fertilizer to build membrane bone frame, close with Petiolus Trachycarpi oil, fine coal
Ash prevents adhesion as firming agent face powder；These materials all have degradability or harmless to soil, will not produce soil
Harmful effect；Peplos uses granulating method coating process, first fertiliser granulates is heated to 43 DEG C, then will warm up 125 DEG C in liquid
The Petiolus Trachycarpi oil of state is uniformly sprayed onto fertiliser granulates surface by spray gun, subsequently by trace-element fertilizer (adding flyash etc.) and wood
Quality is dividedly in some parts in granulating disc and carries out wrapping up, mixing；
The first step: a certain amount of granulated fertilizer carbamide is preheated in encapsulation tool 43 DEG C, adds Petiolus Trachycarpi oil, and its consumption is granule
The 0.8% of weight of fertilizer, turns to fertiliser granulates surface in encapsulation tool and forms bonding liquid layer；
Second step: first the trace-element fertilizer powder such as boron fertilizer, zinc fertilizer is uniformly spread in rotating circular disk on the fertiliser granulates of motion,
The consumption of trace-element fertilizer material is the 2% of granulated fertilizer weight, turns to trace-element fertilizer and is wrapping to fertiliser granulates
On；Continue heating and keep temperature 43 DEG C, then make, adding flyash, the fertilizer that firming agent is uniformly spread in rotating circular disk move
On grain, the consumption of flyash is the 5% of granulated fertilizer weight, under the effect of its firming agent, and solidify to form shock resistance, wear-resisting
Coating layer, complete for the first time peplos, wherein, boron fertilizer, the weight ratio of zinc fertilizer are 1:1.5；
3rd step: continue second time oil spout, is uniformly spread to lignin material on the fertiliser granulates wrapping up micro-fertilizer of motion, wooden
The consumption of cellulosic material is the 6% of granulated fertilizer quality, turns to lignin material and is wrapping on fertiliser granulates；Continue heating to protect
Hold temperature 43 DEG C, then make, on the fertiliser granulates that firming agent is uniformly spread in rotating circular disk move, to solidify at it adding flyash
Under the effect of agent, and it solidify to form shock resistance, wear-resisting coating layer, until trace-element fertilizer and lignin material are all wrapped up
On fertiliser granulates, complete second time peplos, prepare required lignin and micro-fertile double-deck coated slow-release urea；
(3) blanking: coated fertilizer is delivered to finished product screen extension set by conveyer belt after completing by peplos；
(4) finished product screening: sieve with finished product screen extension set；
(5) inspection: total nitrogen nutrient content and sustained release performance to every batch of product are measured；Pack after up to standard, every batch of product
The amount of product is 10 tons；The physical and chemical index of release-controlled coated urea meets；
(6) subpackage；Formally pack by automatic packer.
Embodiment 4: the slow-release carbamide preparation method step of lignin and trace element lapping is:
(1) screening: for ensureing envelope mass, it is uniform that peplos crosses range request fertiliser granulates, it is therefore desirable to by the carbamide of peplos
Grain screens so that it is particle diameter is basically identical；
(2) peplos: coated fertilizer uses lignin and trace-element fertilizer to build membrane bone frame, close with fixed oil, fine coal
Ash prevents adhesion as firming agent face powder；These materials all have degradability or harmless to soil, will not produce soil
Harmful effect；Peplos uses granulating method coating process, first fertiliser granulates is heated to 45 DEG C, then will warm up 120 DEG C in liquid
The fixed oil of state is uniformly sprayed onto fertiliser granulates surface by spray gun, subsequently by trace-element fertilizer (adding flyash etc.) and wood
Quality is dividedly in some parts in granulating disc and carries out wrapping up, mixing；
The first step: a certain amount of granulated fertilizer carbamide is preheated in encapsulation tool 45 DEG C, adds fixed oil, and its consumption is granule
The 0.7% of weight of fertilizer, turns to fertiliser granulates surface in encapsulation tool and forms bonding liquid layer；
Second step: first the trace-element fertilizer powder such as boron fertilizer, zinc fertilizer is uniformly spread in rotating circular disk on the fertiliser granulates of motion,
The consumption of trace-element fertilizer is the 1.5% of granulated fertilizer weight, turns to trace-element fertilizer material and is wrapping to fertilizer
On grain；Continue heating and keep temperature 45 C, then make, adding flyash, the fertilizer that firming agent is uniformly spread in rotating circular disk move
On granule, the consumption of flyash is the 3% of granulated fertilizer weight, under the effect of its firming agent, and solidify to form shock resistance, resistance to
The coating layer of mill, completes peplos for the first time, and wherein, boron fertilizer, the weight ratio of zinc fertilizer are 1:2；
3rd step: continue second time oil spout, is uniformly spread to lignin material on the fertiliser granulates of parcel trace element of motion,
The consumption of lignin material is the 7% of granulated fertilizer quality, turns to lignin material and is wrapping on fertiliser granulates；Continue to add
Heat keeps temperature 45 C, then makees add flyash on the fertiliser granulates that firming agent is uniformly spread in rotating circular disk move, at it
Under the effect of firming agent, and it solidify to form shock resistance, wear-resisting coating layer, until trace-element fertilizer and lignin material are whole
It is wrapped on fertiliser granulates, completes second time peplos, prepare required lignin and trace-element fertilizer bilayer coated slow-release urine
Element；
4th step: different according to designed fertilizer control release natural law, crop demand nutrient is different with ratio, is sequentially repeated repeatedly
(such as twice), until multilamellar trace-element fertilizer and lignin material are all wrapped on fertiliser granulates, coating layer solidifies, and also may be used
Prepare required delta wood quality and trace-element fertilizer coated slow-release urea；
(3) blanking: coated fertilizer is delivered to finished product screen extension set by conveyer belt after completing by peplos；
(4) finished product screening: sieve with finished product screen extension set；
(5) inspection: total nitrogen nutrient content and sustained release performance to every batch of product are measured；Pack after up to standard, every batch of product
The amount of product is 10 tons；
(6) subpackage；Formally pack by automatic packer；
The physical and chemical index of release-controlled coated urea.
Embodiment 5: the slow-release carbamide preparation method step of lignin and trace element lapping is:
(1) screening: for ensureing envelope mass, it is uniform that peplos crosses range request fertiliser granulates, it is therefore desirable to by the carbamide of peplos
Grain screens so that it is particle diameter is basically identical；
(2) peplos: coated fertilizer uses lignin and trace-element fertilizer to build membrane bone frame, close with fixed oil, fine coal
Ash prevents adhesion as firming agent face powder；These materials all have degradability or harmless to soil, will not produce soil
Harmful effect；Peplos uses granulating method coating process, first fertiliser granulates is heated to 40 DEG C, then will warm up 120 DEG C in liquid
The fixed oil of state is uniformly sprayed onto fertiliser granulates surface by spray gun, subsequently by trace-element fertilizer (adding flyash etc.) and wood
Quality is dividedly in some parts in granulating disc and carries out wrapping up, mixing；
The first step: a certain amount of granulated fertilizer compound fertilizer is preheated in encapsulation tool 40 DEG C, adds fixed oil, and its consumption is
The 0.5% of grain weight of fertilizer, turns to fertiliser granulates surface in encapsulation tool and forms bonding liquid layer；
Second step: first the trace-element fertilizer material powder such as boron fertilizer, zinc fertilizer is uniformly spread in rotating circular disk the fertilizer of motion
On grain, the consumption of trace-element fertilizer material is the 1% of granulated fertilizer weight, turns to trace-element fertilizer material and is wrapping to
On fertiliser granulates；Continue heating keep temperature 40 DEG C, then add flyash make firming agent be uniformly spread in rotating circular disk motion
Fertiliser granulates on, the consumption of flyash is the 2% of granulated fertilizer weight, solidify to form anti-impact under the effect of its firming agent
Hit, wear-resisting coating layer, complete for the first time peplos, wherein, boron fertilizer, the weight ratio of zinc fertilizer are 1:1；
3rd step: continue second time oil spout, is uniformly spread to lignin material on the fertiliser granulates wrapping up micro-fertilizer of motion, wooden
The consumption of cellulosic material is the 5% of granulated fertilizer quality, turns to lignin material and is wrapping on fertiliser granulates；Continue heating to protect
Hold temperature 40 DEG C, then make, on the fertiliser granulates that firming agent is uniformly spread in rotating circular disk move, to solidify at it adding flyash
Shock resistance, wear-resisting coating layer is formed, until trace-element fertilizer and lignin material are all wrapped in fertilizer under the effect of agent
On granule, complete second time peplos, prepare required lignin and trace-element fertilizer bilayer coated slow-release urea；
(3) blanking: coated fertilizer is delivered to finished product screen extension set by conveyer belt after completing by peplos；
(4) finished product screening: sieve with finished product screen extension set；
(5) inspection: total nitrogen nutrient content and sustained release performance to every batch of product are measured；Pack after up to standard, every batch of product
The amount of product is 10 tons；The physical and chemical index of release-controlled coated urea meets；
(6) subpackage；Formally pack by automatic packer.
Embodiment 6: lignin and trace element coated carbamide preparation method step be:
(1) screening: for ensureing envelope mass, it is uniform that peplos crosses range request fertiliser granulates, it is therefore desirable to by the carbamide of peplos
Grain screens so that it is particle diameter is basically identical；
(2) peplos: coated fertilizer uses lignin and trace-element fertilizer to build membrane bone frame, close with Petiolus Trachycarpi oil, fine coal
Ash prevents adhesion as firming agent face powder；These materials all have degradability or harmless to soil, will not produce soil
Harmful effect；Peplos uses granulating method coating process, first fertiliser granulates is heated to 45 DEG C, then will warm up 125 DEG C in liquid
The Petiolus Trachycarpi oil of state is uniformly sprayed onto fertiliser granulates surface by spray gun, subsequently by trace-element fertilizer (adding flyash etc.) and wood
Quality is dividedly in some parts in granulating disc and carries out wrapping up, mixing；
The first step: a certain amount of granulated fertilizer compound fertilizer is preheated in encapsulation tool 45 DEG C, adds Petiolus Trachycarpi oil, and its consumption is
The 1% of grain weight of fertilizer, turns to fertiliser granulates surface in encapsulation tool and forms bonding liquid layer；
Second step: first the trace-element fertilizer material powder such as boron fertilizer, zinc fertilizer is uniformly spread in rotating circular disk the fertilizer of motion
On grain, the consumption of trace-element fertilizer material is the 2% of granulated fertilizer weight, turns to trace-element fertilizer material and is wrapping to
On fertiliser granulates；Continue heating keep temperature 45 C, then add flyash make firming agent be uniformly spread in rotating circular disk motion
Fertiliser granulates on, the consumption of flyash is the 5% of granulated fertilizer weight, forms shock resistance, resistance under the effect of its firming agent
The coating layer of mill, completes peplos for the first time, and wherein boron fertilizer, the weight ratio of zinc fertilizer are 1:1.5；
3rd step: continue second time oil spout, is uniformly spread to lignin on the granule of parcel trace-element fertilizer of motion, wooden
The consumption of cellulosic material is the 8% of granulated fertilizer quality, turns to lignin material and is wrapping on fertiliser granulates；Continue heating to protect
Hold temperature 45 C, then make, on the fertiliser granulates that firming agent is uniformly spread in rotating circular disk move, to solidify at it adding flyash
Forming shock resistance, wear-resisting coating layer under the effect of agent, until being all wrapped on fertiliser granulates, completing second time peplos, system
Lignin needed for and trace-element fertilizer bilayer coated slow-release urea；
(3) blanking: coated fertilizer is delivered to finished product screen extension set by conveyer belt after completing by peplos；
(4) finished product screening: sieve with finished product screen extension set；
(5) inspection: total nitrogen nutrient content and sustained release performance to every batch of product are measured；Pack after up to standard, every batch of product
The amount of product is 10 tons；The physical and chemical index of release-controlled coated urea meets；
(6) subpackage；Formally pack by automatic packer.
Five, raw material, equipment and technological process
1, lignin: (1) raw material sources: use powder lignin as coated fertilizer；It is many that raw material sources are mainly Gaotang, Shandong
Unit lignin company limited, Jinan Yuan Sheng Chemical Industry Science Co., Ltd；(2) specification:
Table 3.
| Outward appearance | Yellowish-brown powder | |
| Water-insoluble | ≤1.0% | |
| Reduzate | ≤10.0% | |
| Lignin (butt) | ≥55.0% | |
| pH | 7.0-9.0 | |
| Particle diameter | 1-5mm | |
| Fineness | 60 mesh |
2, trace-element fertilizer
(1) boric acid: molecular formula H3BO3 content (GB) >=99.5%, equivalent boracic (B) amount about 17%, by magnesium borate ore and sulphuric acid
Reaction, through filtering, concentrate, crystallize, dry and making；Boric acid is brilliant without the oblique flakey white particulate of colour band nacreous three
Body, water soluble；Such as the main boric acid using the ground such as Yingkou, Liaoning, wide pasture；
(2) zinc sulfate (ZnSO4·7H2O), it is 23%-24 % containing Zn amount, white or salmon pink crystallization, soluble in water；As mainly
Use the zinc fertilizer that Shandong Zibo, Zou produce coequally.
3, carbamide: carbamide mainly uses Jincheng, Shanxi carbamide, carbamide of conquering east, Shanxi, Henan to open carbamide.
4, fixed oil, Petiolus Trachycarpi oil: fixed oil is mainly composed of satisfied fatty acid monoglyceride, under room temperature, outward appearance is white or micro-
Yellow, waxy solid；Extremely fixed oil fusing point 58 ± 2 DEG C, water insoluble, is insoluble in ethanol；Highly dense close river, Shandong fixed oil is limited
Company, Hebei Hengshui City oil chemistry factory；Domestic Petiolus Trachycarpi oil mainly uses Tianjin Longwei Grain & Oil Industrial Co., Ltd. to produce.
5, process equipment:
The slow-release carbamide raw material of lignin and trace element coated fertilizer and the equipment of production
Table 4
Six, technical target of the product:
The slow-release carbamide product sustained release performance of lignin and trace element lapping is up to state standards (GB/T23348-
2009), in 25 DEG C of hydrostatic, i.e. extract 24 hours accumulation nutrients release≤15%, extract 28 days accumulation nutrients release≤80%,
Encapsulation ratio >=90%, granularity 1-5mm, hardness is more than or equal to 10N.
Seven, technical advance:
This invention product is domestic initiation, there is no other manufacturer at present, this project development success, on the one hand fills out technically
Mend domestic blank, on the other hand on product, filled up the market vacancy, had more competitiveness than same kind of products at abroad；This production
System utilizes domestic production equipment, carries out the technological transformation of necessity, and production cost is substantially reduced；The exploitation of this project, meets state
Family Growth of Chemical Fertilizer Industry direction.
Claims (9)
1. the present invention is the fluid bed coated fertilizer technology as raw material with lignin and trace element, uses raw material to prepare granule thin
Little, the lignin powder body of homogeneous grain diameter and trace element material, with the air of flowing as carrier, by lignin and micro-fertile fine grained
In band fluidized bed, collide with in stabilization fluid state fertiliser granulates, enter vaporific binding agent from bed side spray simultaneously, make lignin
Being bonded in fertilizer surface with micro-fertile granule by collision, continuous operation makes integument constantly thicken, thus realizes preparation bilayer
The purpose of Wrapped fertilizer.
2. inventive technique as claimed in claim 1 is that control release urea is made up of core layer and coating layer, and described core layer is
Carbamide, coating layer is lignin and trace element and additive thereof, uses degradable lignin material as the peplos material of chemical fertilizer
Material, adds trace-element fertilizer material and corresponding additive, can design corresponding controlled release according to crop alimentary rule and demand
Parameter (preliminary solubility, differential solubility, release phase), controls nutrient by adjusting peplos number of times and consumption, membrane wrapping thickness etc.
Release, by the optimization of coated fertilizer Yu coating process, the release of nutrient in coated urea can be controlled by these techniques
Natural law, can produce fertilizer efficiency effect duration according to crop cycle difference is 60 days, 90 days, 120 days, the degradable of 360 days
Lignin coated slow-release urea；The slow control of the various tailored versions such as various Semen Maydis, Semen Tritici aestivi, vegetable, fruit tree, lawn, flowers can be produced
Release fertilizer series of products.
A kind of lignin the most as claimed in claim 1 or 2 and the slow-release carbamide of trace element lapping, its special character exists
In: include fertilizer and coated fertilizer, the skeleton that is material construction fertilizer coating with lignin and trace-element fertilizer.
4. lignin as claimed in claim 3 and the slow-release carbamide of trace element lapping, also include coated fertilizer micro-
Hole carries out sealer and the firming agent closed, and this sealer is fixed oil, palmitic one, and firming agent is flyash.
Lignin of the present invention the most as claimed in claim 4 and the slow-release carbamide of trace element lapping, raw material is urine
Element, trace element is boric acid, zinc sulfate, and wherein, boric acid, the mass ratio of zinc sulfate are 1:0.8-2.
6. the preparation technology of the slow-release carbamide of lignin as claimed in claim 5 and trace element lapping, including following
Step: with lignin and trace element for the skeleton of material construction fertilizer coating, by sealer, micropore is closed.
7. the preparation method of the slow-release carbamide of lignin as claimed in claim 6 and trace element lapping, with flyash
The adhesion between fertiliser granulates is prevented in encapsulation process as firming agent.
8. the lignin as described in claim 5,6,7 and the slow-release carbamide preparation method of trace element lapping, its feature
It is: comprise the following steps:
(1) screening: screen by the fertiliser granulates of peplos so that it is particle diameter is basically identical；(2) peplos: coated fertilizer uses
Lignin and micro-fertilizer build membrane bone frame, close with sealer, and flyash prevents adhesion as firming agent face powder, and peplos uses
Granulating method coating process, is first heated to 40-45 DEG C by fertiliser granulates, then will warm up the 115-125 DEG C of sealer being in a liquid state
Uniformly it is sprayed onto fertiliser granulates surface by spray gun, subsequently micro-fertilizer, flyash and lignin is dividedly in some parts disc granulation
Machine is carried out wrap up, mix；(3) blanking: coated fertilizer is delivered to finished product screen extension set by conveyer belt after completing by peplos；(4)
Finished product sieves: sieve with finished product screen extension set；(5) check, pack: total nitrogen nutrient content and the slow-releasing to every batch of product
Can be measured, up to standard after pack.
9. the lignin as described in claim 5,6,7,8 and the slow-release carbamide preparation method of trace element lapping, it is special
Levy and be: step (2) specifically includes:
The first step: a certain amount of granulated fertilizer is preheated in encapsulation tool 40-45 DEG C, adds the 115-125 DEG C of envelope being in a liquid state
Closing agent, its consumption is the 0.5-1% of granulated fertilizer weight, turns to fertiliser granulates surface and form binding liquid in encapsulation tool
Layer；
Second step: first trace element powder is uniformly spread in rotating circular disk on the fertiliser granulates of motion, trace element material
Consumption is the 1-2% of granulated fertilizer weight, turns to trace element material and is wrapping on fertiliser granulates；
Continue heating and keep temperature 40-45 DEG C, then make, adding flyash, the fertilizer that firming agent is uniformly spread in rotating circular disk move
On material granule, the consumption of flyash is the 2-5% of granulated fertilizer weight, under the effect of its firming agent, and solidify to form anti-impact
Hit, wear-resisting coating layer, complete for the first time peplos；
3rd step: continue second time oil spout, on the fertiliser granulates of peplos trace element lignin material being uniformly spread to motion,
The consumption of lignin material is the 5-8% of granulated fertilizer quality, turns to lignin material and is wrapping on fertiliser granulates, continues
Continuous heating keeps temperature 40-45 DEG C, then makees, adding flyash, the fertiliser granulates that firming agent is uniformly spread in rotating circular disk move
On, under the effect of its firming agent, and it solidify to form shock resistance, wear-resisting coating layer, until trace element and lignin material
All being wrapped on fertiliser granulates, complete second time peplos, the functional type preparing required lignin and trace element peplos delays
Release carbamide；
4th step: different according to designed fertilizer control release natural law, crop demand nutrient is different with ratio, is sequentially repeated many
Secondary, until multilamellar trace element and lignin material are all wrapped on fertiliser granulates, coating layer solidifies, and also can prepare required
Delta wood quality and trace element peplos functional type slow-release carbamide.
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| CN106631516A (en) * | 2017-01-12 | 2017-05-10 | 石河子大学 | Oxidation cross-linking film coated slow-release urea containing trace elements and preparation method thereof |
| CN111099939A (en) * | 2018-10-26 | 2020-05-05 | 深圳市芭田生态工程股份有限公司 | Anti-leaching fertilizer and preparation method thereof |
| CN111470798A (en) * | 2019-01-24 | 2020-07-31 | 交通运输部科学研究院 | Long-acting slow-release black anti-freezing ice modifier for asphalt pavement and preparation method thereof |
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| XIAOYONG ZHANG 等: "Study on Release Properties of Slow Release Urea Coated by Industrial Lignin", 《AGRICULTURAL SCIENCE & TECHNOLOGY》 * |
| 王正银主编: "《肥料研制与加工》", 30 June 2011, 中国农业大学出版社 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106631516A (en) * | 2017-01-12 | 2017-05-10 | 石河子大学 | Oxidation cross-linking film coated slow-release urea containing trace elements and preparation method thereof |
| CN111099939A (en) * | 2018-10-26 | 2020-05-05 | 深圳市芭田生态工程股份有限公司 | Anti-leaching fertilizer and preparation method thereof |
| CN111470798A (en) * | 2019-01-24 | 2020-07-31 | 交通运输部科学研究院 | Long-acting slow-release black anti-freezing ice modifier for asphalt pavement and preparation method thereof |
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