CN100415665C - Comprehensive utilization method of titanium white waste acid - Google Patents
Comprehensive utilization method of titanium white waste acid Download PDFInfo
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- CN100415665C CN100415665C CNB2005100801161A CN200510080116A CN100415665C CN 100415665 C CN100415665 C CN 100415665C CN B2005100801161 A CNB2005100801161 A CN B2005100801161A CN 200510080116 A CN200510080116 A CN 200510080116A CN 100415665 C CN100415665 C CN 100415665C
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- ferrous sulfate
- oxidation
- crystal seed
- iron
- iron oxide
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000002253 acid Substances 0.000 title claims abstract description 24
- 239000002699 waste material Substances 0.000 title claims abstract description 14
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 11
- 235000010215 titanium dioxide Nutrition 0.000 title claims abstract description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 66
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 39
- 239000011790 ferrous sulphate Substances 0.000 claims abstract description 35
- 235000003891 ferrous sulphate Nutrition 0.000 claims abstract description 35
- 239000013078 crystal Substances 0.000 claims abstract description 27
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 23
- 238000006243 chemical reaction Methods 0.000 claims abstract description 22
- 230000003647 oxidation Effects 0.000 claims abstract description 22
- YOBAEOGBNPPUQV-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe].[Fe] YOBAEOGBNPPUQV-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000047 product Substances 0.000 claims abstract description 14
- 239000002002 slurry Substances 0.000 claims abstract description 12
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 10
- 239000010440 gypsum Substances 0.000 claims abstract description 10
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 8
- 239000012065 filter cake Substances 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 8
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 4
- 229910021506 iron(II) hydroxide Inorganic materials 0.000 claims abstract description 4
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims abstract description 3
- SURQXAFEQWPFPV-UHFFFAOYSA-L iron(2+) sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Fe+2].[O-]S([O-])(=O)=O SURQXAFEQWPFPV-UHFFFAOYSA-L 0.000 claims description 37
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 20
- 230000015572 biosynthetic process Effects 0.000 claims description 14
- 239000000706 filtrate Substances 0.000 claims description 13
- 235000012204 lemonade/lime carbonate Nutrition 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 6
- 230000005587 bubbling Effects 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 238000010298 pulverizing process Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000001590 oxidative effect Effects 0.000 claims description 3
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims description 2
- 239000011505 plaster Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 239000004575 stone Substances 0.000 claims description 2
- 230000003472 neutralizing effect Effects 0.000 abstract description 8
- 239000000126 substance Substances 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 abstract 2
- 238000009835 boiling Methods 0.000 abstract 1
- 239000003086 colorant Substances 0.000 abstract 1
- 239000001117 sulphuric acid Substances 0.000 abstract 1
- 235000011149 sulphuric acid Nutrition 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 description 7
- 239000000243 solution Substances 0.000 description 6
- 238000003756 stirring Methods 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 235000019738 Limestone Nutrition 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- YDZQQRWRVYGNER-UHFFFAOYSA-N iron;titanium;trihydrate Chemical compound O.O.O.[Ti].[Fe] YDZQQRWRVYGNER-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Landscapes
- Compounds Of Iron (AREA)
Abstract
The present invention relates to a comprehensive utilization method of titanium white waste acid, which comprises the following steps: (1) calcium carbonate is used for neutralizing free sulphuric acid in waste acid, and then, the filtration is carried out so as to obtain a gypsum filter cake and ferrous sulfate filter liquid; (2) the obtained filter cake is baked by rotary kilns, boiling fluidized beds, etc., and a gypsum product is obtained; (3) the obtained ferrous sulfate solution as the filter liquid is neutralized with sodium hydroxide so as to obtain ferrous hydroxide, air is introduced, and the ferrous hydroxide is oxidized at normal temperature so as to obtain an iron red crystal; (4) in the existence of the crystal, a steam is used for heating, two-step oxidation is carried out by air, the ferrous sulphate and the sodium hydroxide are added in a balanced mode, and the reaction is terminated by selecting different time intervals so as to obtain iron red slurry with different colors; the iron red slurry which is obtained when the reaction is completed is washed in water, sieved, filtered, dried and pulverized so as to obtain an iron red product. The method of the present invention can extract gypsum and iron oxide which are used as useful substances from titanium white waste acid, and thereby, the purposes of improving environment and reducing pollution are achieved.
Description
Technical field
The invention belongs to a kind of method of comprehensive utilization of industrial waste, be specifically related to a kind of method of comprehensive utilization of titanium white waste liquid.
Background technology
Be that raw material is when using Titanium White Production By Sulfuric Acid Process with the ilmenite, one ton of titanium white of every production promptly can be discharged about 8～10 tons of spent acid, vitriolic content is about 18～24% in these spent acid, ferrous sulfate content is about 15～25%, not only cause serious environmental to pollute, and wasted a large amount of available resources.
Summary of the invention
The technical problem to be solved in the present invention provide a kind of can pollution abatement and from waste liquid, extract the method for comprehensive utilization of the titanium white waste acid liquid of useful products.
The technical scheme that addresses the above problem is: the inventive method comprises following content:
1, uses in the lime carbonate and the free sulfuric acid in the spent acid, filter then, obtain plaster stone filter cake and ferrous sulfate filtrate;
2, the gained filter cake with rotary kiln or fluidizing fluid-bed equipment roasting, promptly obtain gypsum product;
3, gained filtrate copperas solution with caustic soda neutralize ferrous hydroxide, bubbling air oxidation at normal temperatures obtains iron red crystal seed formation again;
4, in the presence of crystal seed, use steam heating, and carry out second oxidation, balancedly add ferrous sulfate and caustic soda, select different period termination reactions promptly to obtain the different iron oxide red slurry of color with air;
With the iron oxide red slurry that reaction finishes wash, sieve, filter, drying and pulverizing be the iron oxide red product.
In first of the said process and the chemical equation of spent acid be:
H
2SO
4+CaCO
3+H
2O＝CaSO
4·2H
2O+CO
2↑
The chemical equation of second roast gypsum is:
CaSO
4·2H
2O＝CaSO
4*1/2.H
2O+3/2.H
2O↑
The 3rd chemical equation that obtains iron red crystal seed formation is:
FeSO
4+2NaOH＝＝Fe(OH)
2↓+Na
2SO
4
2Fe(OH)
2+1/2.O
2＝＝Fe
2O
3+2H
2O
The 4th chemical equation that obtains iron oxide red is:
2FeSO
4+1/2.O
2+2H
2O＝Fe
2O
3↓+2H
2SO
4
H
2SO
4+2NaOH＝Na
2SO
4
Described be used for and spent acid in free vitriolic lime carbonate can be water-ground limestone and/or light calcium carbonate, the lime carbonate that adds in the titanium white waste acid is that fineness is greater than 40 purpose powder lime carbonate or pulpous state lime carbonate, until the solution pH value is 3～5, carries out slurries filtration again;
Described the neutralization of ferrous sulfate filtrate is obtained in the process of iron red crystal seed formation, the neutralizing agent of employing is a caustic soda, and ferrous sulfate (is used FeSO
47H
2O represents) concentration is 20～200g/L, neutralization back pH value is 8～12.
Detailed process is: the ferrous sulfate filtrate of filtering gained is added the bottom to be had in the crystal seed jar of air-distributor, adjusting concentration is 20～200g/L, under the situation of pneumatic blending, adding liquid caustic soda to pH value is 8～12, continue bubbling air and carry out oxidation, air flow quantity is 0.5～2m by every cubic metre of material air flow quantity
3/ min, oxidizing temperature is 10～30 ℃, oxidation finishes promptly to obtain iron red crystal seed formation;
Described iron red crystal seed formation is carried out second oxidation when obtaining the iron oxide red product, in the second oxidation reaction process, add neutralizing agent caustic soda and ferrous sulfate, control ferrous sulfate concentration is 5～80g/L in the oxidising process, and pH value is 1.5～4.5 (preferred values 1.5～3.5), and temperature of reaction is 70～95 ℃; Detailed process is:
Iron red crystal seed formation is added in the second oxidation jar, regulating pH value with sulfuric acid or ferrous sulfate under the situation of pneumatic blending is 1～4, and to regulate the ferrous sulfate starting point concentration be 10～50g/L, with being steam heated to 75～95 ℃, continues by every cubic metre of material feeding 0.2～2m
3The air of/min carries out oxidation, add ferrous sulfate and caustic soda in the oxidising process continuously, control reaction temperature is 70～95 ℃, ferrous sulfate concentration is 5～80g/L, pH value is 1.5～4.5, and the ferric oxide of generation progressively grows up crystal grain attached on the crystal seed, be chosen in different period end reactions, can obtain the different iron oxide red of color; With the iron oxide red slurry that reaction finishes wash, sieve, filter, drying and pulverizing be the iron oxide red product.
The inventive method can be extracted useful matter gypsum and red iron oxide from titanium white waste acid, and reaches the improvement environment, the purpose of pollution abatement.
Specific embodiments
Embodiment one
1, be in the retort of 6000L band stirring at volume, add the spent acid of 3000L, it is 120 purpose water-ground limestones that the unlatching stirring slowly adds fineness, is 4 until the solution pH value, pumps into the pressure filter press filtration, and filtrate is delivered to the ferrous sulfate groove, and analytical concentration is 260g/L;
2, with filter cake with fluidizing fluid-bed 250～600 ℃ of following roastings, obtain gypsum;
3, above-mentioned gained filtrate copperas solution 500L is placed the crystal seed jar of 3000L, being diluted with water to concentration is 80g/L, and under pneumatic blending, it is 9 that the about 98L of liquid caustic soda of adding 30% is adjusted to pH value, continues to feed 1.0m by every cubic metre of material
3The air of/min, slurry temperature is about 20～22 ℃ in the reaction process, gets the red-brown iron red crystal seed formation after oxidation finishes.
4, iron red crystal seed formation 1000L is added in the second oxidation retort of 5000L, feed 2m by every cubic metre of material
3The air of/min flow, regulating pH value with spent acid is 2, analyzing the ferrous sulfate starting point concentration is 40g/L, with being steam heated to 85 ℃, with the copperas solution after 1 gained press filtration of flow equalization adding of 0.5～0.6L/min, 0.16 the flow equalization of～0.19L/min adds 30% liquid caustic soda, the pH value of control reaction is 1.5～3.5, and ferrous sulfate concentration is 30～50g/L, and temperature of reaction is 85 ± 2 ℃, reaction is carried out stopping after 36 hours, can get light iron oxide red product.
Embodiment two
1, be in the retort of 6000L band stirring at volume, the spent acid that adds 3000L, add 500kg titanium white by product product iron vitriol again, after stirring and dissolving is complete, slowly adding fineness is 120 purpose water-ground limestones, is 4 until the solution pH value, pumps into the pressure filter press filtration, filtrate is sent into another ferrous sulfate groove, and analytical concentration is 425g/L;
2, with filter cake with fluidizing fluid-bed 250～600 ℃ of following roastings, obtain gypsum;
3, get 1 gained ferrous sulfate filtrate 500L in the crystal seed jar of 3000L, being diluted with water to concentration is 80g/L, and under pneumatic blending, it is 9 that the about 155L of liquid caustic soda of adding 30% is adjusted to pH value, continues to feed 1.5m by every cubic metre of material
3The air of/min flow, slurry temperature is about 20～22 ℃ in the reaction process, gets the red-brown iron red crystal seed formation after oxidation finishes;
4, get iron red crystal seed formation 1000L in the second oxidation retort of 5000L, feed 2m
3The air of/min, regulating pH value with spent acid is 2, analyzing the ferrous sulfate starting point concentration is 40g/L, with being steam heated to 85 ℃, with 1 gained ferrous sulfate filtrate of flow equalization adding of 0.5～0.6L/min, 0.16 the flow equalization of～0.19L/min adds 30% liquid caustic soda, the pH value of control reaction is 1.5～3.5, and ferrous sulfate concentration is 30～50g/L, and temperature of reaction is 85 ± 2 ℃, reaction is carried out stopping after 60 hours, can get dark iron oxide red product.
Be the main experimental data of embodiment 3-5 below:
| General data | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| 1 | Neutralizing agent neutralizing agent granularity pH value ferrous sulfate filter liquor concentration | Water-ground limestone 100 orders 3 265g/L | Light calcium carbonate 320 orders 4 270g/L | Water-ground limestone pulpous state 5 230g/L |
| 2 | Gypsum calciner maturing temperature | Rotary kiln 250-600 ℃ | Fluidizing fluid-bed 250-600 ℃ | Fluidizing fluid-bed 250-600 ℃ |
| 3 obtain crystal seed | The added neutralizing agent neutralizing agent of oxidation step ferrous sulfate filter liquor concentration filtrate concentration pH value air flow quantity (every m 3Material) oxidizing temperature | 50g/L caustic soda 30% aqueous solution 8 0.6m 3/min 10-12℃ | 150g/L caustic soda 30% aqueous solution 10 1.5m 3/min 25-27℃ | 200g/L caustic soda 30% aqueous solution 12 2m 3/min 17-18℃ |
| 4 obtain iron oxide red | Second oxidation is transferred pH value ferrous sulfate starting point concentration oxidising process temperature neutralizing agent oxidising process ferrous sulfate concentration oxidising process pH value oxidation total time with acid | 80 ± 2 ℃ of caustic soda 20-30g/L 1.5～3.5 40 of 1 20g/L hour | 90 ± 2 ℃ of caustic soda 40-50g/L 1.5～3.5 60 of 3 30g/L hour | 85 ± 2 ℃ of caustic soda 70-80g/L 1.5～3.5 72 of 4 50g/L hour |
Claims (3)
1. comprehensive utilization of titanum white waste acid method is characterized in that: comprise following content:
(1), with in the lime carbonate and the free sulfuric acid in the spent acid, filter then, obtain plaster stone filter cake and ferrous sulfate filtrate;
(2), the gained filter cake with rotary kiln or fluidizing fluid-bed equipment roast, promptly obtain gypsum product;
(3), gained filtrate copperas solution with caustic soda neutralize ferrous hydroxide, bubbling air oxidation at normal temperatures obtains iron red crystal seed formation again; Detailed process is:
The ferrous sulfate filtrate of filtering gained is added the bottom to be had in the crystal seed jar of air-distributor, adjusting concentration is 20～200g/L, under the situation of pneumatic blending, adding liquid caustic soda to pH value is 8～12, continue bubbling air and carry out oxidation, air flow quantity is 0.5～2m by every cubic metre of material air flow quantity
3/ min, oxidizing temperature is 10～30 ℃, oxidation finishes promptly to obtain iron red crystal seed formation;
(4), in the presence of crystal seed, use steam heating, and carry out second oxidation with air, balancedly add ferrous sulfate and caustic soda, control ferrous sulfate concentration is 5～80g/L in the oxidising process, pH value is 1.5～4.5, and temperature of reaction is 70～95 ℃, selects different period termination reactions promptly to obtain the different iron oxide red slurry of color;
With the iron oxide red slurry that reaction finishes wash, sieve, filter, drying and pulverizing be the iron oxide red product.
2. comprehensive utilization of titanum white waste acid method according to claim 1, it is characterized in that: described be used for and spent acid in free vitriolic lime carbonate be water-ground limestone and/or light calcium carbonate, the lime carbonate that adds in the titanium white waste acid is that fineness is greater than 40 purpose powder lime carbonate or pulpous state lime carbonate, until the solution pH value is 3～5, carries out slurries filtration again.
3. comprehensive utilization of titanum white waste acid method according to claim 1 and 2, it is characterized in that: describedly iron red crystal seed formation is carried out the process that second oxidation obtains the iron oxide red product be: iron red crystal seed formation is added in the second oxidation jar, regulating pH value with sulfuric acid or ferrous sulfate under the situation of pneumatic blending is 1～4, and adjusting ferrous sulfate starting point concentration is 10～50g/L, with being steam heated to 75～95 ℃, continue to feed 0.2～2m by every cubic metre of material
3The air of/min carries out oxidation, add ferrous sulfate and caustic soda in the oxidising process continuously, control reaction temperature is 70～95 ℃, ferrous sulfate concentration is 5～80g/L, pH value is 1.5～4.5, and the ferric oxide of generation progressively grows up crystal grain attached on the crystal seed, be chosen in different period end reactions, can obtain the different iron oxide red of color; With the iron oxide red slurry that reaction finishes wash, sieve, filter, drying and pulverizing be the iron oxide red product.
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|---|---|---|---|
| CNB2005100801161A CN100415665C (en) | 2005-06-29 | 2005-06-29 | Comprehensive utilization method of titanium white waste acid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100801161A CN100415665C (en) | 2005-06-29 | 2005-06-29 | Comprehensive utilization method of titanium white waste acid |
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| CN1699224A CN1699224A (en) | 2005-11-23 |
| CN100415665C true CN100415665C (en) | 2008-09-03 |
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| CNB2005100801161A Active CN100415665C (en) | 2005-06-29 | 2005-06-29 | Comprehensive utilization method of titanium white waste acid |
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|---|---|---|---|---|
| CN102115209B (en) * | 2010-12-31 | 2012-08-01 | 谢善情 | Method for producing ferrous nitrate and barium sulfate by using waste acid obtained by producing titanium white by sulfuric acid method |
| CN102211785A (en) * | 2011-04-06 | 2011-10-12 | 中国科学院过程工程研究所 | Building material and method for preparing calcium sulfate hemihydrates from titanium white waste sulfuric acid |
| CN102275970A (en) * | 2011-05-20 | 2011-12-14 | 攀枝花市微创科技开发有限公司 | Comprehensive utilization method of titanium white waste acid and wastewater |
| CN102372306A (en) * | 2011-08-11 | 2012-03-14 | 四川龙蟒钛业股份有限公司 | Method for recycling concentrated slag of wasted acid from titanium white production |
| CN102976413B (en) * | 2012-10-29 | 2014-06-25 | 中国有色集团（广西）平桂飞碟股份有限公司 | Two-step oxidation production method for iron oxide red pigment |
| CN103539206B (en) * | 2013-10-23 | 2015-07-01 | 中国有色集团（广西）平桂飞碟股份有限公司 | Wet method for preparing iron oxide red through introducing crystal form accelerant |
| CN104310489B (en) * | 2014-10-10 | 2016-09-07 | 升华集团德清华源颜料有限公司 | A kind of preparation method of iron oxide red without ammonium oxidation |
| CN106115793B (en) * | 2016-06-21 | 2018-01-02 | 阳山景润陶瓷色料实业有限公司 | A kind of ferric oxide red colorant and preparation method thereof |
| CN107445192A (en) * | 2017-07-24 | 2017-12-08 | 广西藤县广峰钛白有限公司 | The recoverying and utilizing method and its equipment of titanium powder plant discarded object GYPSUM RUBRUM |
| CN108373215B (en) * | 2017-10-29 | 2020-07-14 | 中国有色集团（广西）平桂飞碟股份有限公司 | Method for treating titanium white wastewater |
| CN110129061B (en) * | 2019-05-31 | 2021-02-09 | 北京建工环境修复股份有限公司 | Stabilizer for repairing heavy metal pollution and preparation method and application thereof |
| CN116040688A (en) * | 2022-11-01 | 2023-05-02 | 攀枝花末微环保科技有限公司 | Iron oxide red product and preparation method and application thereof |
| CN116040687A (en) * | 2022-11-01 | 2023-05-02 | 攀枝花末微环保科技有限公司 | Comprehensive utilization method of sulfuric acid process titanium dioxide waste acid and sulfuric acid process titanium dioxide production process |
| CN117383752B (en) * | 2023-11-13 | 2024-12-20 | 赤峰金通铜业有限公司 | A method for treating arsenic-containing waste acid by calcium carbonate and calcium hydroxide method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1007831B (en) * | 1986-03-18 | 1990-05-02 | 上海市纺织机械研究所 | Method for making fibre net hot-melt clothes lining |
| US6416723B1 (en) * | 1998-03-20 | 2002-07-09 | Bayer Aktiengesellschaft | Method for reprocessing waste acid to form gypsum and iron oxide |
| US6530987B1 (en) * | 1998-03-20 | 2003-03-11 | Bayer Aktiengesellschaft | Method for producing iron oxide pigments from waste acid resulting from TiO2 production |
| CN1590304A (en) * | 2003-09-05 | 2005-03-09 | 李景钞 | Comprehensive utilization method of ferrous sulfate waste water and waste iron scraps |
-
2005
- 2005-06-29 CN CNB2005100801161A patent/CN100415665C/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1007831B (en) * | 1986-03-18 | 1990-05-02 | 上海市纺织机械研究所 | Method for making fibre net hot-melt clothes lining |
| US6416723B1 (en) * | 1998-03-20 | 2002-07-09 | Bayer Aktiengesellschaft | Method for reprocessing waste acid to form gypsum and iron oxide |
| US6530987B1 (en) * | 1998-03-20 | 2003-03-11 | Bayer Aktiengesellschaft | Method for producing iron oxide pigments from waste acid resulting from TiO2 production |
| CN1590304A (en) * | 2003-09-05 | 2005-03-09 | 李景钞 | Comprehensive utilization method of ferrous sulfate waste water and waste iron scraps |
Non-Patent Citations (4)
| Title |
|---|
| 用钛白副产硫酸亚铁生产氧化铁系列颜料. 黄平峰.无机盐工业，第35卷第5期. 2003 |
| 用钛白副产硫酸亚铁生产氧化铁系列颜料. 黄平峰.无机盐工业，第35卷第5期. 2003 * |
| 钛白废酸废水治理及副产石膏应用探讨. 胡术刚，马术文，王之静，孙学金.中国资源综合利用，第9期. 2003 |
| 钛白废酸废水治理及副产石膏应用探讨. 胡术刚，马术文，王之静，孙学金.中国资源综合利用，第9期. 2003 * |
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| Publication number | Publication date |
|---|---|
| CN1699224A (en) | 2005-11-23 |
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