CN111728091A - Preparation method of high-strength composite particle carrier for feed - Google Patents
Preparation method of high-strength composite particle carrier for feed Download PDFInfo
- Publication number
- CN111728091A CN111728091A CN202010703947.4A CN202010703947A CN111728091A CN 111728091 A CN111728091 A CN 111728091A CN 202010703947 A CN202010703947 A CN 202010703947A CN 111728091 A CN111728091 A CN 111728091A
- Authority
- CN
- China
- Prior art keywords
- composite particle
- preparing
- drying tower
- strength composite
- particle carrier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000011246 composite particle Substances 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 28
- 238000001035 drying Methods 0.000 claims abstract description 50
- 239000002245 particle Substances 0.000 claims abstract description 44
- 239000000853 adhesive Substances 0.000 claims abstract description 28
- 230000001070 adhesive effect Effects 0.000 claims abstract description 28
- 238000003756 stirring Methods 0.000 claims abstract description 27
- 238000001694 spray drying Methods 0.000 claims abstract description 17
- 238000003860 storage Methods 0.000 claims abstract description 12
- 238000005469 granulation Methods 0.000 claims abstract description 8
- 230000003179 granulation Effects 0.000 claims abstract description 8
- 238000000265 homogenisation Methods 0.000 claims abstract description 8
- 239000002131 composite material Substances 0.000 claims abstract description 7
- 238000004537 pulping Methods 0.000 claims abstract description 6
- 239000002002 slurry Substances 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 26
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 24
- 239000000843 powder Substances 0.000 claims description 22
- 239000004575 stone Substances 0.000 claims description 22
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 17
- 239000011859 microparticle Substances 0.000 claims description 15
- 239000002994 raw material Substances 0.000 claims description 15
- 239000007787 solid Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 14
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 13
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 13
- 229910052757 nitrogen Inorganic materials 0.000 claims description 13
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims description 13
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims description 13
- 230000032683 aging Effects 0.000 claims description 12
- 239000000440 bentonite Substances 0.000 claims description 12
- 229910000278 bentonite Inorganic materials 0.000 claims description 12
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 12
- 230000001588 bifunctional effect Effects 0.000 claims description 12
- 239000007822 coupling agent Substances 0.000 claims description 12
- 239000000428 dust Substances 0.000 claims description 12
- 239000000377 silicon dioxide Substances 0.000 claims description 12
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 12
- 235000019353 potassium silicate Nutrition 0.000 claims description 11
- 239000005995 Aluminium silicate Substances 0.000 claims description 10
- 235000012211 aluminium silicate Nutrition 0.000 claims description 10
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 10
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- 235000012239 silicon dioxide Nutrition 0.000 claims description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000008367 deionised water Substances 0.000 claims description 8
- 229910021641 deionized water Inorganic materials 0.000 claims description 8
- 238000011049 filling Methods 0.000 claims description 8
- 229910052710 silicon Inorganic materials 0.000 claims description 8
- 239000010703 silicon Substances 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 7
- 239000008187 granular material Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000009775 high-speed stirring Methods 0.000 claims description 5
- RWLDCNACDPTRMY-UHFFFAOYSA-N 3-triethoxysilyl-n-(3-triethoxysilylpropyl)propan-1-amine Chemical group CCO[Si](OCC)(OCC)CCCNCCC[Si](OCC)(OCC)OCC RWLDCNACDPTRMY-UHFFFAOYSA-N 0.000 claims description 4
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 4
- 238000000889 atomisation Methods 0.000 claims description 4
- 239000012876 carrier material Substances 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 4
- 230000007062 hydrolysis Effects 0.000 claims description 4
- 238000006460 hydrolysis reaction Methods 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 4
- 239000004615 ingredient Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 241001465754 Metazoa Species 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 5
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 3
- 238000002845 discoloration Methods 0.000 abstract description 2
- 230000001590 oxidative effect Effects 0.000 abstract description 2
- 230000001052 transient effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000027455 binding Effects 0.000 description 5
- 241001391944 Commicarpus scandens Species 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000012216 screening Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 229910003471 inorganic composite material Inorganic materials 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009817 primary granulation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000009818 secondary granulation Methods 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K40/00—Shaping or working-up of animal feeding-stuffs
- A23K40/10—Shaping or working-up of animal feeding-stuffs by agglomeration; by granulation, e.g. making powders
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K20/00—Accessory food factors for animal feeding-stuffs
- A23K20/10—Organic substances
- A23K20/105—Aliphatic or alicyclic compounds
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K20/00—Accessory food factors for animal feeding-stuffs
- A23K20/10—Organic substances
- A23K20/163—Sugars; Polysaccharides
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K20/00—Accessory food factors for animal feeding-stuffs
- A23K20/20—Inorganic substances, e.g. oligoelements
- A23K20/22—Compounds of alkali metals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
- Y02P60/87—Re-use of by-products of food processing for fodder production
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Polymers & Plastics (AREA)
- Zoology (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Animal Husbandry (AREA)
- Inorganic Chemistry (AREA)
- Glanulating (AREA)
- Silicon Compounds (AREA)
Abstract
The invention discloses a preparation method of a high-strength composite particle carrier for feed, which comprises the steps of preparation of an adhesive, proportioning, stirring and pulping, homogenization, spray drying and granulation and the like, wherein the adhesive adopts an inorganic-organic composite adhesive, belongs to animal feedable substances, has the characteristics of good chemical stability, high bonding capability and high temperature resistance, does not have viscosity reduction and oxidative discoloration under transient high temperature in a drying tower, ensures the strength of a prepared finished product, reduces the particle crushing rate in production, transportation and storage, and reduces the particle crushing rate from the original 30-40% to below 10%. The invention realizes the control of spray drying parameters, realizes the controllable production of products with the particle size of 100-1000 mu m, has high degree of automation and stable technological parameters, improves the yield from the original 250 kg/h to 6000 kg/h, and is more suitable for large-scale production and application.
Description
Technical Field
The invention belongs to the technical field of feed processing, and particularly relates to a preparation method of a high-strength composite particle carrier for feed.
Background
Animal feed contains many components, some of which are trace but are extremely important for animal feeding, and excessive amounts of which cause toxicity. These micro-ingredients need to be evenly distributed throughout the complete feed otherwise negative effects may be exerted on the animals. In view of the production process of the compound feed, a premix containing the required trace components needs to be produced first and then made into a complete compound feed. In the premix, the trace components are uniformly mixed by the particle carrier, so that they can be relatively easily and uniformly dispersed in the compound feed to produce a high-quality feed. Particulate carriers are required to be able to carry trace amounts of active ingredients, improve their dispersibility, and have good chemical stability and adsorption of feedable materials.
At present, the preparation of the composite particle carrier in the feed industry generally adopts a dry preparation process, namely, after various raw materials are dry-milled, manual batching and mixing are carried out, then water is added for stirring, the raw materials enter an extrusion granulator, the granules are extruded out, the granules are dried to required moisture through drying equipment, oversized and undersized granules are removed through a screening device, the granules with qualified particle sizes are the composite particle carrier, and the composite particle carrier is packaged to be used as a terminal product.
The Chinese patent previously filed by the company, namely the production method of the composite particle carrier for the feed (CN201510151091.3), discloses a production method of the composite particle carrier for the feed, which sequentially comprises the following steps: and (3) preparing materials, stirring for pulping, homogenizing slurry, performing spray drying granulation, and sorting and packaging the composite particles to finally prepare the particle carrier with the particle size of 105-900 microns. The particle strength is lower in the process of subsequent actual production, the particles are easy to break and the like, so that the particles are easy to break in the process of transportation and storage, the yield is low, the yield of primary granulation is only 60-70%, and the broken particles need to be subjected to secondary granulation after screening, so that the raw materials and energy are wasted greatly.
Disclosure of Invention
Aiming at the problem that the composite particles are easy to break, the invention analyzes the defects of the production process of particle breaking and provides a preparation method of a high-strength composite particle carrier for feed.
It can be seen from the comparison document (CN201510151091.3) -the preparation process of the composite particle carrier for feed, that the fluidity and the binding property of the slurry are ensured by adding the binder into the mixed raw materials of light calcium carbonate, stone powder, medical stone, bentonite, calcined kaolin and silica, but the temperature coefficient of the binder is 95-99 ℃, and the binder may be carbonized due to instantaneous high temperature of 400-600 ℃ in the subsequent spray drying to lose the binding effect, so that the particle strength is reduced, the particles are easy to break in production, transportation and storage, a large amount of waste products need to be granulated again, and the energy waste is serious.
Aiming at the defect, the invention designs the novel high-temperature-resistant high-. The adhesive not only contains components with high temperature resistance, good stability and coupling and bonding effects, but also contains organic components which promote the good dispersion and fluidity of slurry in the processes of a stirrer, a batching tank, pipeline transportation and the like in the normal and low temperature batching procedure; the adhesive belongs to an organic-inorganic composite material adhesive, and has the advantages of simple production, low cost, stable performance and the like.
The technical scheme of the invention is as follows:
a preparation method of a high-strength composite particle carrier for feed comprises the following steps:
【1】 Preparation of the adhesive:
preparing water glass, a bifunctional organic silicon coupling agent, sodium carboxymethylcellulose and deionized water according to the weight ratio of 30-40: 5-10: 50-65: 900-1000; wherein the bifunctional organosilicon coupling agent is bis [3- (triethoxysilyl) propyl ] amine or ethyl orthosilicate;
dissolving sodium carboxymethylcellulose in deionized water, adding water glass after the sodium carboxymethylcellulose is fully dissolved, fully stirring to form a viscous solution, and adding a bifunctional organic silicon coupling agent for hydrolysis for 30-60 minutes to obtain an adhesive solution;
【2】 Preparing materials:
weighing light calcium carbonate, stone powder, medical stone, bentonite, calcined kaolin and silicon dioxide according to a proportion, and then feeding the materials into a mixing stirring tank;
【3】 Stirring for pulping and homogenizing:
adding water and an adhesive in a mixing and stirring tank in proportion, wherein the weight of the adhesive accounts for 4-6% of the total raw materials, and carrying out high-speed stirring, ageing and homogenizing;
【4】 Spray drying and granulating:
and (3) delivering the aged slurry into a spray drying tower for spray drying to form solid particles with the water content of 2-3%, delivering the solid particles into a storage bin, and recovering the residual superfine powder for repulping and utilizing.
In the preparation method of the high-strength composite particle carrier for the feed, the spray drying and granulating step [ 4 ] comprises the following steps:
(4.1) sending the aged slurry into an atomization device in a drying tower body through a high-pressure slurry pump, pumping out air in a granulation tower by using vacuum, and filling nitrogen to replace the drying tower for two times;
filling nitrogen into the drying tower, adjusting the pressure in the tower to reach a preset threshold value by using a pressure regulator, and performing closed-loop circulation on the gas in the drying tower through a draught fan;
(4.3) cooling the nitrogen entering the tower to 8 ℃ by a cooling device, starting a centrifugal atomizer, controlling the rotating speed of the atomizer at 10000-20000 rpm, and adjusting the spraying pressure to 0.6-1.8MPa according to the particle size range of a product;
generating hot air by using a hot blast stove, sending the generated hot air into a steam heater for continuous heating, and detecting the temperature of the hot air by using a temperature sensor until the temperature reaches a preset threshold value;
feeding hot air into the drying tower body from the bottom of the drying tower body, wherein the hot air reversely touches the micro-particle slurry drops generated in the step (4.5) in the drying tower body, instantly drying the micro-particle slurry drops, detecting the humidity of solid particles by using a humidity sensor, and judging whether a preset humidity threshold value is reached; if the preset humidity threshold value is reached, turning to the step (4.6), and if the preset humidity threshold value is not reached, drying again;
(4.6) conveying the solid particles into a storage bin through a conveying device for further homogenization;
[ 4.7 ] the water vapor formed by instantly evaporating the micro-particle slurry drops is pumped out by a dust removal exhaust system of the drying tower together with the micro-fine powder, the micro-fine powder is recycled by a dust collector of the drying tower, the slurry is recycled, the water vapor is purified by the dust collector and then is emptied, and the preparation of the composite particle carrier material is completed.
In the preparation method of the high-strength composite particle carrier for the feed, in the step (1), the modulus of the water glass is 3.1-3.4, and the Baume degree is 36-40.
In the preparation method of the high-strength composite particle carrier for the feed, the step (2) comprises the following steps of mixing the following components in parts by weight: the light calcium carbonate comprises stone powder, medical stone, bentonite, calcined kaolin and silicon dioxide, wherein the weight ratio of the stone powder to the bentonite to the silica is 27-30: 25-28: 25-27: 8-12: 10-20: 4-6.
In the preparation method of the high-strength composite particle carrier for the feed, the weight ratio of the raw materials and the water added in the stirring tank is 6: 4.
In the preparation method of the high-strength composite particle carrier for the feed, when the step (3) is carried out at a high speed, the rotating speed of a stirrer is 200-280 r/min, and the stirring time is 8-30 min.
In the preparation method of the high-strength composite particle carrier for the feed, in the step (3), the rotating speed of a stirrer during ageing and homogenizing is 15-30 r/min, and the ageing time is 12-18 h.
In the preparation method of the high-strength composite particle carrier for the feed, the preset temperature threshold value in the step (4.4) is 600 ℃.
In the preparation method of the high-strength composite particle carrier for the feed, the preset humidity threshold value in the step (4.5) is 5%.
In the preparation method of the high-strength composite particle carrier for the feed, the particle size of solid particles obtained by granulation in the step (4) is 100-1000 microns.
The invention has the following beneficial technical effects:
1. the invention analyzes the problems of strength reduction and particle crushing caused by viscosity failure of a low-temperature adhesive added in raw materials under the instantaneous high-temperature environment in spray drying in the prior art, and provides that an inorganic-organic composite adhesive is added in the raw materials, belongs to animal feedable substances, has the characteristics of good chemical stability, high bonding capability and high temperature resistance, does not have viscosity reduction and oxidative discoloration under the transient high temperature in a drying tower, ensures the strength and the invariant color of a prepared finished product, reduces the particle crushing rate in production, transportation and storage, and reduces the particle crushing rate from the original 30-40 percent to below 10 percent.
2. The inorganic-organic composite adhesive of the present invention includes a dispersing component, a coupling component and a binding component. The dispersing component adopts water glass, the main component is sodium silicate, the effect is to reduce the surface energy of various mineral materials, and the viscosity of the slurry is reduced through the charge effect; the coupling component adopts bis [3- (triethoxysilyl) propyl ] amine or ethyl orthosilicate, which acts on hydroxyl on the surface of the mineral material to couple and bond the mineral material component particles; the organic binding component is sodium carboxymethyl cellulose, the function is to guarantee the fluidity of the sizing agent in the processes of batching and conveying, etc., in order to improve the toughness of the spray granule at the same time, the binder not only contains the high temperature resistant, good stability, but also has the coupling binding action component, and also contains the organic component which promotes the good dispersion and fluidity of the sizing agent in the processes of stirrer, batching tank, pipeline conveying, etc. in the process of batching at normal and low temperature; the adhesive belongs to an organic-inorganic composite material adhesive, and has the advantages of simple production, low cost, stable performance and the like. The three materials are all feedable raw materials with better stability in the feed industry, and the adhesive prepared after compounding can endure the high temperature of 300 ℃ for more than 10 minutes and the drying tower working temperature of 600 ℃ for more than 10 seconds, thereby ensuring the strength of finished product particles.
3. The invention adopts the comprehensive parameter control technology in the spray drying link. Generating micro-particle slurry drops determining the size of composite carrier particles by controlling the temperature of nitrogen entering the tower, the spraying pressure and the rotating speed parameters of the atomizer, detecting and controlling the temperature of hot air by adopting a temperature sensor, and changing the flash time of atomized liquid drops and hot air so that the hot air with set temperature reversely touches the generated micro-particle slurry drops in the drying tower body to instantly dry the micro-particle slurry drops; meanwhile, a humidity sensor is adopted to detect the humidity of solid particles, the drying process is controlled in a feedback mode to ensure the humidity of the product, the spray drying parameters are controlled, the production of the product with the particle size of 100-1000 mu m is achieved, the automation degree is high, the technological parameters are stable, the yield is improved to 6000 kg/h from the original 250 kg/h, and the method is more suitable for large-scale production and application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1:
【1】 Preparation of the adhesive:
preparing water glass, a bifunctional organic silicon coupling agent, sodium carboxymethylcellulose and deionized water according to the weight ratio of 30:5:50: 900; wherein the bifunctional organosilicon coupling agent is bis [3- (triethoxysilyl) propyl ] amine;
dissolving sodium carboxymethylcellulose in deionized water, adding water glass after the sodium carboxymethylcellulose is fully dissolved, fully stirring to form a viscous solution, and adding a bifunctional organic silicon coupling agent for hydrolysis for 30 minutes to obtain an adhesive solution;
【2】 Preparing materials:
weighing light calcium carbonate, stone powder, medical stone, bentonite, calcined kaolin and silicon dioxide according to the weight ratio of the light calcium carbonate, the stone powder, the medical stone, the bentonite, the calcined kaolin and the silicon dioxide, and then feeding the materials into a mixing stirring tank;
【3】 Stirring for pulping and homogenizing:
adding water and an adhesive into a mixing and stirring tank in proportion, wherein the weight ratio of the raw materials to the water is 6:4, the weight of the adhesive accounts for 4% of the total raw materials, and carrying out high-speed stirring, ageing and homogenizing; wherein, when stirring at high speed, the rotating speed of the stirrer is 200r/min, and the stirring time is 30 min. The rotating speed of the stirrer during the aging and homogenization is 15r/min, and the aging time is 18 h.
【4】 Spray drying and granulating:
(4.1) sending the aged slurry into an atomization device in a drying tower body through a high-pressure slurry pump, pumping out air in a granulation tower by using vacuum, and filling nitrogen to replace the drying tower for two times;
filling nitrogen into the drying tower, adjusting the pressure in the tower to reach a preset threshold value by using a pressure regulator, and performing closed-loop circulation on the gas in the drying tower through a draught fan;
cooling nitrogen entering the tower to 8 ℃ by using a cooling device, starting a centrifugal atomizer, and setting the rotating speed of the atomizer at 10000rpm and the spraying pressure at 0.6 MPa; the cooling temperature, the spraying pressure and the rotating speed parameters of the atomizer generate atomized liquid drops which determine the particle size of the composite carrier;
generating hot air by using a hot blast stove, sending the generated hot air into a steam heater for continuous heating, and detecting the temperature of the hot air by using a temperature sensor until the temperature reaches a preset threshold value; wherein the temperature threshold is 600 ℃. If the hot air reaches the threshold value, turning to the step (4.5), and if the hot air does not reach the threshold value, continuously heating;
feeding hot air into the drying tower body from the bottom of the drying tower body, wherein the hot air reversely touches the micro-particle slurry drops generated in the step (4.5) in the drying tower body, instantly drying the micro-particle slurry drops, detecting the humidity of solid particles by using a humidity sensor, and judging whether a preset humidity threshold value is reached; if the preset humidity threshold value is reached, turning to the step (4.6), and if the preset humidity threshold value is not reached, drying again; wherein the preset humidity threshold is 5%.
(4.6) conveying the solid particles into a storage bin through a conveying device for further homogenization;
[ 4.7 ] the water vapor formed by instant evaporation of the micro-particle slurry drops is pumped out by a dust removal exhaust system of the drying tower together with the micro-fine powder, the micro-fine powder is recycled by a dust collector of the drying tower and reused as slurry, and the water vapor is purified by the dust collector and then emptied;
(4.8) screening and packaging the composite particle carrier material fed into the storage bin according to the requirements of users on performance and granularity, and entering a finished product warehouse to obtain the composite particle carrier for the feed.
Example 2:
【1】 Preparation of the adhesive:
preparing water glass, a bifunctional organic silicon coupling agent, sodium carboxymethylcellulose and deionized water according to the weight ratio of 40:10:65: 1000; wherein the bifunctional organosilicon coupling agent is tetraethoxysilane;
dissolving sodium carboxymethylcellulose in deionized water, adding water glass after the sodium carboxymethylcellulose is fully dissolved, fully stirring to form a viscous solution, and adding a bifunctional organic silicon coupling agent for hydrolysis for 60 minutes to obtain an adhesive solution;
【2】 Preparing materials:
weighing light calcium carbonate, stone powder, medical stone, bentonite, calcined kaolin and silicon dioxide according to the weight ratio of the light calcium carbonate, the stone powder, the medical stone, the bentonite, the calcined kaolin and the silicon dioxide which are 30:28:27:12:20:6, and then feeding the materials into a mixing stirring tank;
【3】 Stirring for pulping and homogenizing:
adding water and an adhesive into a mixing and stirring tank in proportion, wherein the weight ratio of the raw materials to the water is 6:4, the weight of the adhesive accounts for 6% of the total raw materials, and carrying out high-speed stirring, ageing and homogenizing; wherein, during high-speed stirring, the rotating speed of the stirrer is 280r/min, and the stirring time is 8 min. The rotating speed of the stirrer during the aging and homogenization is 30r/min, and the aging time is 12 h.
【4】 Spray drying and granulating:
(4.1) sending the aged slurry into an atomization device in a drying tower body through a high-pressure slurry pump, pumping out air in a granulation tower by using vacuum, and filling nitrogen to replace the drying tower for two times;
filling nitrogen into the drying tower, adjusting the pressure in the tower to reach a preset threshold value by using a pressure regulator, and performing closed-loop circulation on the gas in the drying tower through a draught fan;
(4.3) cooling the temperature of the nitrogen entering the tower to 8 ℃ by using a cooling device, starting a centrifugal atomizer, and setting the rotating speed of the atomizer to 20000rpm and the spraying pressure to 1.8 MPa; the cooling temperature, the spraying pressure and the rotating speed parameters of the atomizer generate atomized liquid drops which determine the particle size of the composite carrier;
generating hot air by using a hot blast stove, sending the generated hot air into a steam heater for continuous heating, and detecting the temperature of the hot air by using a temperature sensor until the temperature reaches a preset threshold value; wherein the temperature threshold is 600 ℃; if the hot air reaches the threshold value, turning to the step (4.5), and if the hot air does not reach the threshold value, continuously heating;
feeding hot air into the drying tower body from the bottom of the drying tower body, wherein the hot air reversely touches the micro-particle slurry drops generated in the step (4.5) in the drying tower body, instantly drying the micro-particle slurry drops, detecting the humidity of solid particles by using a humidity sensor, and judging whether a preset humidity threshold value is reached; if the preset humidity threshold value is reached, turning to the step (4.6), and if the preset humidity threshold value is not reached, drying again; wherein the humidity threshold is 5%.
(4.6) conveying the solid particles into a storage bin through a conveying device for further homogenization;
[ 4.7 ] the water vapor formed by instant evaporation of the micro-particle slurry drops is pumped out by a dust removal exhaust system of the drying tower together with the micro-fine powder, the micro-fine powder is recycled by a dust collector of the drying tower and reused as slurry, and the water vapor is purified by the dust collector and then emptied;
(4.8) screening and packaging the composite particle carrier material fed into the storage bin according to the requirements of users on performance and granularity, and entering a finished product warehouse to obtain the composite particle carrier for the feed.
The invention realizes the preparation of the high-strength composite particle carrier with the particle size of 100-1000 mu m and the water content of 2-3%, the crushing rate of the particles is reduced to below 5%, and the yield is improved from the original 250 kg/h to 6000 kg/h due to the realization of automatic control of a production line, so that the preparation method is more suitable for large-scale production and application.
The above description is only for the purpose of illustrating the present invention and the appended claims are not to be construed as limiting the scope of the invention, which is intended to cover all modifications, equivalents and improvements that are within the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A preparation method of a high-strength composite particle carrier for feed is characterized by comprising the following steps:
【1】 Preparation of the adhesive:
preparing water glass, a bifunctional organic silicon coupling agent, sodium carboxymethylcellulose and deionized water according to the weight ratio of 30-40: 5-10: 50-65: 900-1000; wherein the bifunctional organosilicon coupling agent is bis [3- (triethoxysilyl) propyl ] amine or ethyl orthosilicate;
dissolving sodium carboxymethylcellulose in deionized water, adding water glass after the sodium carboxymethylcellulose is fully dissolved, fully stirring to form a viscous solution, and adding a bifunctional organic silicon coupling agent for hydrolysis for 30-60 minutes to obtain an adhesive solution;
【2】 Preparing materials:
weighing light calcium carbonate, stone powder, medical stone, bentonite, calcined kaolin and silicon dioxide according to a proportion, and then feeding the materials into a mixing stirring tank;
【3】 Stirring for pulping and homogenizing:
adding water and an adhesive in a mixing and stirring tank in proportion, wherein the weight of the adhesive accounts for 4-6% of the total raw materials, and carrying out high-speed stirring, ageing and homogenizing;
【4】 Spray drying and granulating:
and (3) delivering the aged slurry into a spray drying tower for spray drying to form solid particles with the water content of 2-3%, delivering the solid particles into a storage bin, and recovering the residual superfine powder for repulping and utilizing.
2. The method for preparing a high-strength composite granule carrier for feeds according to claim 1, wherein the spray-drying granulation step [ 4 ] comprises the steps of:
(4.1) sending the aged slurry into an atomization device in a drying tower body through a high-pressure slurry pump, pumping out air in a granulation tower by using vacuum, and filling nitrogen to replace the drying tower for two times;
filling nitrogen into the drying tower, adjusting the pressure in the tower to reach a preset threshold value by using a pressure regulator, and performing closed-loop circulation on the gas in the drying tower through a draught fan;
(4.3) cooling the nitrogen entering the tower to 8 ℃ by a cooling device, starting a centrifugal atomizer, controlling the rotating speed of the atomizer at 10000-20000 rpm, and adjusting the spraying pressure to 0.6-1.8MPa according to the particle size range of a product;
generating hot air by using a hot blast stove, sending the generated hot air into a steam heater for continuous heating, and detecting the temperature of the hot air by using a temperature sensor until the temperature reaches a preset threshold value;
feeding hot air into the drying tower body from the bottom of the drying tower body, wherein the hot air reversely touches the micro-particle slurry drops generated in the step (4.5) in the drying tower body, instantly drying the micro-particle slurry drops, detecting the humidity of solid particles by using a humidity sensor, and judging whether a preset humidity threshold value is reached; if the preset humidity threshold value is reached, turning to the step (4.6), and if the preset humidity threshold value is not reached, drying again;
(4.6) conveying the solid particles into a storage bin through a conveying device for further homogenization;
[ 4.7 ] the water vapor formed by instantly evaporating the micro-particle slurry drops is pumped out by a dust removal exhaust system of the drying tower together with the micro-fine powder, the micro-fine powder is recycled by a dust collector of the drying tower, the slurry is recycled, the water vapor is purified by the dust collector and then is emptied, and the preparation of the composite particle carrier material is completed.
3. The method for preparing a high-strength composite particle carrier for feeds according to claim 1, wherein: in the step (1), the modulus of the water glass is 3.1-3.4, and the baume degree is 36-40.
4. The method for preparing a high-strength composite particle carrier for feeds according to claim 1, wherein: the weight ratio of the light calcium carbonate, the stone powder, the medical stone, the bentonite, the calcined kaolin and the silicon dioxide in the ingredients is as follows: the light calcium carbonate comprises stone powder, medical stone, bentonite, calcined kaolin and silicon dioxide, wherein the weight ratio of the stone powder to the bentonite to the silica is 27-30: 25-28: 25-27: 8-12: 10-20: 4-6.
5. The method for preparing a high-strength composite particle carrier for feeds according to claim 1, wherein: step [3 ] the weight ratio of the raw materials and the water added into the stirring tank is 6: 4.
6. The method for preparing a high-strength composite particle carrier for feeds according to claim 1, wherein: in the step (3), when stirring at a high speed, the rotating speed of the stirrer is 200-280 r/min, and the stirring time is 8-30 min.
7. The method for preparing a high-strength composite particle carrier for feeds according to claim 1, wherein: in the step (3), the rotating speed of the stirrer during the ageing homogenization is 15-30 r/min, and the ageing time is 12-18 h.
8. The method for preparing a high-strength composite particle carrier for feeds according to claim 2, wherein: in the step (4.4), the preset temperature threshold is 600 ℃.
9. The method for preparing a high-strength composite particle carrier for feeds according to claim 2, wherein: and (4.5) presetting the humidity threshold value to be 5%.
10. The method for preparing a high-strength composite particle carrier for feeds according to claim 1, wherein: the particle size of the solid particles obtained by granulating in the step (4) is 100-1000 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010703947.4A CN111728091B (en) | 2020-07-21 | 2020-07-21 | Preparation method of high-strength composite particle carrier for feed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010703947.4A CN111728091B (en) | 2020-07-21 | 2020-07-21 | Preparation method of high-strength composite particle carrier for feed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111728091A true CN111728091A (en) | 2020-10-02 |
| CN111728091B CN111728091B (en) | 2023-02-03 |
Family
ID=72655198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010703947.4A Active CN111728091B (en) | 2020-07-21 | 2020-07-21 | Preparation method of high-strength composite particle carrier for feed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111728091B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106135644A (en) * | 2015-04-01 | 2016-11-23 | 陕西瑞之源农牧科技有限公司 | The feedstuff production method of composite particles carrier |
| CN106858069A (en) * | 2017-03-16 | 2017-06-20 | 陕西瑞之源农牧科技有限公司 | A kind of feed coffee brown composite particles carrier |
| CN106982991A (en) * | 2017-03-16 | 2017-07-28 | 陕西瑞之源农牧科技有限公司 | A kind of feed is with ivory white composite particles carrier |
| CN107889938A (en) * | 2017-11-21 | 2018-04-10 | 常州市蓝勖化工有限公司 | A kind of preparation method of spacetabs type fodder acidulant |
| CN108991246A (en) * | 2018-07-31 | 2018-12-14 | 广东蔚莱生物科技有限公司 | A kind of functional form additive for farm animal feed and the preparation method and application thereof |
| CN109007329A (en) * | 2018-07-13 | 2018-12-18 | 陕西瑞之源农牧科技有限公司 | A kind of feed soybean Huang composite particles carrier compound and support preparation method |
| CN109043149A (en) * | 2018-07-13 | 2018-12-21 | 陕西瑞之源农牧科技有限公司 | A kind of formula and preparation method of ivory white -200 composite particles carrier of feed enzyme preparation |
| CN110214860A (en) * | 2019-07-10 | 2019-09-10 | 聂刘明 | A kind of feed for pet and its preparation process |
-
2020
- 2020-07-21 CN CN202010703947.4A patent/CN111728091B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106135644A (en) * | 2015-04-01 | 2016-11-23 | 陕西瑞之源农牧科技有限公司 | The feedstuff production method of composite particles carrier |
| CN106858069A (en) * | 2017-03-16 | 2017-06-20 | 陕西瑞之源农牧科技有限公司 | A kind of feed coffee brown composite particles carrier |
| CN106982991A (en) * | 2017-03-16 | 2017-07-28 | 陕西瑞之源农牧科技有限公司 | A kind of feed is with ivory white composite particles carrier |
| CN107889938A (en) * | 2017-11-21 | 2018-04-10 | 常州市蓝勖化工有限公司 | A kind of preparation method of spacetabs type fodder acidulant |
| CN109007329A (en) * | 2018-07-13 | 2018-12-18 | 陕西瑞之源农牧科技有限公司 | A kind of feed soybean Huang composite particles carrier compound and support preparation method |
| CN109043149A (en) * | 2018-07-13 | 2018-12-21 | 陕西瑞之源农牧科技有限公司 | A kind of formula and preparation method of ivory white -200 composite particles carrier of feed enzyme preparation |
| CN108991246A (en) * | 2018-07-31 | 2018-12-14 | 广东蔚莱生物科技有限公司 | A kind of functional form additive for farm animal feed and the preparation method and application thereof |
| CN110214860A (en) * | 2019-07-10 | 2019-09-10 | 聂刘明 | A kind of feed for pet and its preparation process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111728091B (en) | 2023-02-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101838136A (en) | Preparation method of aluminium oxide and titanium dioxide compound ceramic powder | |
| CN104774272B (en) | A kind of method preparing low degree of substitution acetic ester starch slurry | |
| CN108285280A (en) | A kind of preparation method of food-grade calcium hydroxide | |
| CN105294086A (en) | Ceramic tile blank and preparation method | |
| CN104761130B (en) | A foam glass production process adopting foam glass waste as a raw material | |
| CN106957151A (en) | Soda lime borosilicate hollow glass micropearl and its production method containing rare earth | |
| CN110330022B (en) | Preparation method of high-dispersion silicon dioxide for foaming silicone rubber sponge | |
| CN106135644A (en) | The feedstuff production method of composite particles carrier | |
| CN110373049A (en) | A kind of production method of cable screen material conductive black | |
| CN111728091B (en) | Preparation method of high-strength composite particle carrier for feed | |
| CN105558351A (en) | Preparation method of granular composite L-amino acid feed additive | |
| CN106543773A (en) | The scale surface treatment method of the superfine quartz powder of median≤2 μm | |
| CN111604040A (en) | Industrial regeneration process of waste powdered activated carbon | |
| CN104556037A (en) | Method for preparing calcium carbide | |
| CN109607506A (en) | A method of promoting ferric lithium phosphate precursor tap density | |
| CN111548756B (en) | Preparation method of calcium carbonate composite filler for epoxy resin adhesive | |
| CN103319632B (en) | Preparation method of powder rubber | |
| CN105694536A (en) | Method for preparing an active light calcium carbonate | |
| CN101817534B (en) | Method for burning solid water glass by using petroleum coke as fuel | |
| CN110156034B (en) | Production method of efficient nano silicon dioxide for beer anti-clouding agent | |
| CN116891597A (en) | Modified sepiolite and preparation method and application thereof | |
| CN1123772A (en) | Manufacture of hollow glass micro-ball | |
| CN102515467A (en) | Silicon raw material tailing granulated material, and preparation method and application thereof | |
| CN101445837B (en) | Preparation method of moisture absorption-resistant xylo-oligosaccharide powder | |
| CN114796970B (en) | Fly ash curing agent and production system thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Preparation method of high-strength composite particle carrier for feed Granted publication date: 20230203 Pledgee: Bank of China Limited Xianyang Branch Pledgor: SHAANXI RUIZHIYUAN AGRICULTURE AND ANIMAL HUSBANDRY TECHNOLOGY CO.,LTD. Registration number: Y2024610000057 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |