CN1519205A - Preparation method of ferrous sulfate - Google Patents
Preparation method of ferrous sulfate Download PDFInfo
- Publication number
- CN1519205A CN1519205A CNA031030564A CN03103056A CN1519205A CN 1519205 A CN1519205 A CN 1519205A CN A031030564 A CNA031030564 A CN A031030564A CN 03103056 A CN03103056 A CN 03103056A CN 1519205 A CN1519205 A CN 1519205A
- Authority
- CN
- China
- Prior art keywords
- iron
- solution
- reaction
- ferrous sulfate
- sulfuric acid
- 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
- 229910000359 iron(II) sulfate Inorganic materials 0.000 title claims abstract description 46
- 235000003891 ferrous sulphate Nutrition 0.000 title claims abstract description 24
- 239000011790 ferrous sulphate Substances 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims description 13
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 title 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 108
- 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 abstract description 46
- 229910052742 iron Inorganic materials 0.000 claims abstract description 45
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000000243 solution Substances 0.000 claims abstract description 24
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000012141 concentrate Substances 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 16
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 claims abstract description 11
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims abstract description 11
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 8
- 239000011593 sulfur Substances 0.000 claims abstract description 8
- 239000002699 waste material Substances 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims abstract description 7
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052683 pyrite Inorganic materials 0.000 claims abstract description 7
- 239000011028 pyrite Substances 0.000 claims abstract description 7
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000003929 acidic solution Substances 0.000 claims abstract description 6
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 6
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims abstract 2
- 230000009467 reduction Effects 0.000 claims description 18
- 239000005864 Sulphur Substances 0.000 claims description 12
- 238000000498 ball milling Methods 0.000 claims description 10
- 239000002893 slag Substances 0.000 claims description 9
- 239000002253 acid Substances 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 8
- 238000004137 mechanical activation Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 6
- 239000003818 cinder Substances 0.000 claims description 5
- 238000002425 crystallisation Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 3
- 206010013786 Dry skin Diseases 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 230000008025 crystallization Effects 0.000 claims description 2
- 238000005485 electric heating Methods 0.000 claims description 2
- 239000000706 filtrate Substances 0.000 claims description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000001117 sulphuric acid Substances 0.000 claims description 2
- 235000011149 sulphuric acid Nutrition 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000001994 activation Methods 0.000 claims 2
- 230000004913 activation Effects 0.000 claims 2
- 235000002918 Fraxinus excelsior Nutrition 0.000 claims 1
- 239000002956 ash Substances 0.000 claims 1
- 239000002612 dispersion medium Substances 0.000 claims 1
- 239000011499 joint compound Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000036632 reaction speed Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- MVZXTUSAYBWAAM-UHFFFAOYSA-N iron;sulfuric acid Chemical compound [Fe].OS(O)(=O)=O MVZXTUSAYBWAAM-UHFFFAOYSA-N 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000002802 bituminous coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- CFERHFITKHKBEO-UHFFFAOYSA-N iron;sulfur monoxide Chemical compound O=S=[Fe] CFERHFITKHKBEO-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000010215 titanium dioxide Nutrition 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Images
Landscapes
- Inorganic Compounds Of Heavy Metals (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a method for preparing ferrous sulfate from pyrite in a reaction solution with sulfuric acid and ferric-containing waste residue, which is characterized by comprising the following steps: firstly, ferric iron-containing waste residues and sulfuric acid react at the temperature of 80-130 ℃ to obtain an acidic solution containing ferric sulfate, then pyrite or sulfur concentrate is added into the acidic solution containing ferric sulfate with the iron concentration of 0.5-4 mol/L to reduce ferric sulfate to obtain a ferrous sulfate solution, and then the ferrous sulfate solution is cooled and crystallized at the temperature of-10-20 ℃, filtered, dried and dried at the temperature of 40-80 ℃ to obtain ferrous sulfate heptahydrate (FeSO)4·7H2O) is copperas. The invention has simple process, low reaction temperature and high reaction speed, and reduces the generation of ferrous sulfateThe production cost and the product quality of the product reach the industrial superior products of GB 10631-89.
Description
Technical field:
The present invention relates to prepare the method for ferrous sulfate, specifically be sulfurous iron ore with sulfuric acid with contain the method for preparing ferrous sulfate in the ferric iron waste residue reaction solution.
Background technology:
Ferrous sulfate is that green vitriol is a kind of important chemical material, and purposes is very extensive.It is mainly derived from by product in China, and its main preparation methods and shortcoming thereof are:
Prepare green vitriol with the scrap iron sulfuric acid process and contain impurity such as other metallic element and silicon, can not be directly as soft magnetic ferrite.
Green vitriol FeSO with the preparation of titanium white by product method
47H
2O, its content generally is lower than 90%, needs during use to purify.
It is limited to adopt the scrap iron sulfuric acid process to prepare green vitriol output, and ferrous sulfate contains many impurity, and quality product is difficult to guarantee.
Weak points such as in a word, these method gained ferrous sulfate quality are low, and the iron sheet consumption is big.
Have at present to adopt and contain ferric waste residue such as pyrite cinder, iron mud, steel-making slag etc. and be the method for feedstock production ferrous sulfate.The CN1125196A patent obtains iron ore concentrate with pyrite cinder, iron mud, iron-containing dust ash, iron ore dried, classified; In the reversion stove, under 700～800 ℃, reduce these iron ore concentrates then with bituminous coal powder; After the iron ore concentrate reduction again vitriol lixiviation make ferrous sulfate.But this procedure complexity, energy consumption height.
Summary of the invention:
The objective of the invention is to: a kind of preparation method of ferrous sulfate is provided, good with the ferrous sulfate quality of present method preparation, the output height, and also technological process is simple, energy consumption is low.
Technical scheme of the present invention is: at first will contain ferric iron waste residue and concentration and be 30～70% sulfuric acid and react 0.5～5 hour under 80～130 ℃ of conditions, obtain the acidic solution of sulfur acid iron, the sulfuric acid consumption is controlled at 0.7～1.2 times of theoretical consumption of iron slag and sulfuric acid complete reaction; Add sulfurous iron ore then in containing the acidic solution of ferric sulfate that concentration of iron is 0.5～4mol/L or sulphur concentrate reduction ferric sulfate obtains copperas solution, control reaction temperature is 50～130 ℃; Again through-10～20 ℃ of crystallisation by cooling, filtration, dryings, obtain iron vitriol (FeSO in 40～80 ℃ of oven dry
47H
2O) be green vitriol.
Advantage of the present invention and positively effect: the ferric sulfate in sulfurous iron ore reduction iron slag and the sulfuric acid reaction gained solution prepares ferrous sulfate, and its quality product has reached GB10631-89 industry premium grads; Technology of the present invention is simple, temperature of reaction is low, speed of response is fast, has reduced the ferrous sulfate production cost, has improved the ferrous sulfate quality product, for pollution and the comprehensive utilization iron resources of eliminating iron slag all played active effect.
Description of drawings:
Fig. 1: iron salt solutions reparation technology schematic flow sheet.
Fig. 2: the sulfurous iron ore reduction method prepares the green vitriol process flow diagram.
Fig. 3: Fe
3+The graph of a relation in reduction ratio and reaction times.
In order to improve the reactive behavior of sulfurous iron ore, the present invention has adopted the ferric sulfate in mechanical activation sulfurous iron ore reduction iron slag and the sulfuric acid reaction gained solution.Its mechanical activation process is by ratio of grinding media to material 27～4: 1 adds sulfurous iron ore or sulphur concentrate in the ball mill (planetary ball-bearing mill, agitating ball mill etc.), during ball milling that mill tube is airtight or add water for ball milling, air sulfur oxide iron ore or sulphur concentrate when preventing ball milling.Ball milling obtains active sulphur iron ore or active sulphur concentrate after 4～8 hours.
In the planet mill tube, be to add sulphur concentrate at 27: 1 to carry out mechanical activation by ratio of grinding media to material.(different ball milling times, Fe
3+The relation in reduction ratio and reaction times as shown in Figure 3.As shown in Figure 3, under the same reaction conditions, soak time is long more, and speed of response is fast more.Under above-mentioned reaction conditions, the ball milling time is reacted 150min Fe when being 240min
3+Reduction ratio can reach 98.26%; Ball milling is not during the time, behind the reaction 680min, and Fe
3+Reduction ratio just reaches 58.76%.Obvious non-activated sulfurous iron ore activity is very low.
Embodiment:
Embodiment 1: at first in the three-necked bottle of the 10000ml that fills sulphuric acid soln, add 3kg oven dry pyrite cinder, its component concentration is that FeO is 0.5%, Fe
3O
4Be 15.96%, Fe
2O
3Be 74.10%; Starting JB300-D type powerful motor stirrer stirs, make and burn slag and be uniformly distributed in the reaction solution, behind 1.1 times of being that 115 ℃, sulfuric acid concentration are 50%, the sulfuric acid consumption is theoretical consumption of constant temperature electric heating cover control reaction temperature, the reaction 4h thin up and filter the solution of sulfur acid iron.
Then with 80g sulfurous iron ore or mechanical activation the sulphur concentrate add in the solution of the above-mentioned sulfur acid iron of 1000ml, its liquid-solid ratio is 100: 8, reacts in stirring, temperature of reaction is 100 ℃, its reaction soln consists of [Fe
3+]=2.130mol/L, [Fe
2+]=0.100mol/L, [H
+]=0.700mol/L.Reaction 150min Fe
3+Reduction ratio can reach 98.26%;
Again oven dry after the solution filtration after the above-mentioned reduction, cold junction, crystallization, filtration, the drying is obtained iron vitriol (FeSO
47H
2O).
Embodiment 2: get the solution 3000mL of the ferric sulfate of embodiment 1 gained, [Fe in the solution
3+]=2.130mol/L, [Fe
2+]=0.100mol/L, [H
+]=0.700mol/L adds sulfuric acid ore deposit 600g through ZJM-20 type periodic agitating ball mill ball milling 4h by liquid-solid ratio 100: 20, stirs, and temperature of reaction is Fe behind 80 ℃, reaction 210min
3+Reduction ratio reaches 96.75%; Again above-mentioned gained copperas solution is but arrived in refrigerator and cooled behind-5 ℃, filtration, centrifuge dripping, 50 ℃ of oven dry green vitriol 1.50kg, Fe in the filtrate
2+=0.440mol/L, Fe
3+=0.13mol/L.
Gained green vitriol sample quality is as shown in table 1.Sulfurous iron ore reduction gained green vitriol quality is better than GB10531-89 premium grads quality as shown in Table 1, near GB664-93 chemical reagent standard.
Table 1 sulphur concentrate reduction gained green vitriol sample quality
| Quality index/% | The gained green vitriol | GB10531-89 (premium grads) | GB664-93 (chemical reagent) |
| ??FeSO 4·7H 2O | ????98 | ??98 | ????98～101 |
| ??Fe 3+ | ????0.32 | ????0.1 | |
| ??Pb | ????0.002 | ??0.002 | ????0.005 |
| ??As | ????0.00045 | ??0.0005 | ????0.0002 |
| ??Zn | ????0.041 | ????0.02 | |
| ??Cl | ????0.05 | ????0.02 | |
| ??Cu | ????0.0018 | ????0.01 | |
| ??TiO 2 | ????0.0039 | ??0.5 | |
| Water-insoluble | ????0.019 | ??0.2 | ????0.02 |
| Phosphoric acid salt (PO 4 3 | ????0.0066 | ????0.002 |
Claims (7)
1. the preparation method of a ferrous sulfate, it is characterized in that: at first will contain ferric iron waste residue and concentration and be 30～70% sulfuric acid and under 80～130 ℃ of conditions, react 0.5～5 hour, obtain the acidic solution of sulfur acid iron, the sulfuric acid consumption is controlled at 0.7～1.2 times of theoretical consumption of iron slag and sulfuric acid complete reaction; Add sulfurous iron ore then in containing the acidic solution of ferric sulfate that concentration of iron is 0.5～4mol/L or sulphur concentrate reduction ferric sulfate obtains copperas solution, control reaction temperature is 50～130 ℃; Again through-10～20 ℃ of crystallisation by cooling, filtration, dryings, obtain iron vitriol (FeSO in 40～80 ℃ of oven dry
47H
2O) be green vitriol.
2. according to the preparation method of the described ferrous sulfate of claim 1, it is characterized in that:
The ferric iron waste residue is meant pyrite cinder, iron mud, slag, iron content ashes and iron ore.
3. the preparation method of ferrous sulfate according to claim 1 is characterized in that: sulfurous iron ore or sulphur concentrate comprise sulfurous iron ore, the sulphur concentrate after the mechanical ball milling activation.
4. the preparation method of ferrous sulfate according to claim 1, it is characterized in that: the mechanical activation process is by ratio of grinding media to material sulfurous iron ore or sulphur concentrate to be added planetary ball-bearing mill tool agitating ball mill, airtight mill tube or be ball milling activation in the dispersion medium with water.
5. the preparation method of ferrous sulfate according to claim 1 is characterized in that: contain the sulfur acid ferrous acid solution that ferric iron waste residue and sulfuric acid reaction obtain and also comprise ferrum sulfuricum oxydatum solutum.
6. the preparation method of a ferrous sulfate is characterized in that:
At first in the three-necked bottle of the 10000ml that fills sulphuric acid soln, add 3kg oven dry pyrite cinder, its component concentration is that FeO is 0.5%, Fe
3O
4Be 15.96%, Fe
2O
3Be 74.10%; Starting JB300-D type powerful motor stirrer stirs, the burning slag is uniformly distributed in the reaction solution, behind 1.1 times of being that 115 ℃, sulfuric acid concentration are 50%, the sulfuric acid consumption is theoretical consumption of constant temperature electric heating cover control, temperature of reaction, the reaction 4h thin up and filter the solution of sulfur acid iron.
Then with 80g sulfurous iron ore or mechanical activation the sulphur concentrate add in the solution of the above-mentioned sulfur acid iron of 1000ml, its liquid-solid ratio is 100: 8, reacts in stirring, temperature of reaction is 100 ℃, its solution composition is [Fe
3+]=2.130mol/L, [Fe
2+]=0.100mol/L, [H
+]=0.700mol/L.Reaction 150min Fe
3+Reduction ratio can reach 98.26%;
Again oven dry after the solution filtration after the above-mentioned reduction, cold junction, crystallization, filtration, the drying is obtained iron vitriol (FeSO
47H
2O).
7. the preparation method of a ferrous sulfate is characterized in that:
Get the solution 3000mL that contains ferric sulfate, [Fe in the solution
3+]=2.130mol/L, [Fe
2+]=0.100mol/L, [H
+]=0.700mol/L adds through the sulfuric acid ore deposit of mechanical activation 4h 600g by liquid-solid ratio 100: 20, move stirring, and temperature of reaction is 80 ℃, react Fe behind the 210min
3+Reduction ratio reaches 96.75%; Again above-mentioned gained copperas solution is but arrived in refrigerator and cooled behind-5 ℃, filtration, centrifuge dripping, 50 ℃ of oven dry green vitriol 1.50kg, Fe in the filtrate
2+=0.440mol/L, Fe
3+=0.13mol/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03103056 CN1233562C (en) | 2003-01-25 | 2003-01-25 | Preparation method of ferrous sulfate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03103056 CN1233562C (en) | 2003-01-25 | 2003-01-25 | Preparation method of ferrous sulfate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1519205A true CN1519205A (en) | 2004-08-11 |
| CN1233562C CN1233562C (en) | 2005-12-28 |
Family
ID=34281946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03103056 Expired - Fee Related CN1233562C (en) | 2003-01-25 | 2003-01-25 | Preparation method of ferrous sulfate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1233562C (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100562490C (en) * | 2006-12-30 | 2009-11-25 | 昆明理工大学 | A kind of method of producing sulfuric acid and iron ore concentrate with ferrous sulfate |
| CN101817563A (en) * | 2010-04-10 | 2010-09-01 | 湖南新恒光科技有限公司 | Process for preparing high-purity ferrous sulfate by adopting pyrite smelting slag |
| CN102689932A (en) * | 2011-03-24 | 2012-09-26 | 镇江市丹徒区江南热镀锌有限公司 | Separation and refining process for ferrous sulphate |
| CN103290231A (en) * | 2013-06-14 | 2013-09-11 | 潼关中金冶炼有限责任公司 | Method for improving gold leaching rate by deironing with acid leaching from arsenic material |
| CN107417025A (en) * | 2017-08-10 | 2017-12-01 | 西安瑞联新材料股份有限公司 | A kind of processing method of folic acid sulfur waste sour water |
| CN108706562A (en) * | 2018-08-14 | 2018-10-26 | 武汉轻工大学 | A method of preparing ferric phosphate using pyrite cinder |
| CN109336189A (en) * | 2018-08-27 | 2019-02-15 | 浙江长华科技股份有限公司 | A method of preparing ferrous sulfate |
| CN109928510A (en) * | 2019-01-29 | 2019-06-25 | 南京农业大学 | A kind of Schwertmannite preparation method based on ZVI reduction coupling microorganism |
| CN110066920A (en) * | 2019-05-31 | 2019-07-30 | 中国科学院过程工程研究所 | A method of Selectively leaching separation vanadium and iron from bone coal navajoite |
| CN113385138A (en) * | 2021-06-21 | 2021-09-14 | 南京贝克特环保科技有限公司 | Preparation method and application of Schneider mineral |
| WO2023187256A1 (en) * | 2022-03-29 | 2023-10-05 | Kemira Oyj | A method for producing ferrous sulphate and phosphoric acid |
-
2003
- 2003-01-25 CN CN 03103056 patent/CN1233562C/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100562490C (en) * | 2006-12-30 | 2009-11-25 | 昆明理工大学 | A kind of method of producing sulfuric acid and iron ore concentrate with ferrous sulfate |
| CN101817563A (en) * | 2010-04-10 | 2010-09-01 | 湖南新恒光科技有限公司 | Process for preparing high-purity ferrous sulfate by adopting pyrite smelting slag |
| CN102689932A (en) * | 2011-03-24 | 2012-09-26 | 镇江市丹徒区江南热镀锌有限公司 | Separation and refining process for ferrous sulphate |
| CN103290231A (en) * | 2013-06-14 | 2013-09-11 | 潼关中金冶炼有限责任公司 | Method for improving gold leaching rate by deironing with acid leaching from arsenic material |
| CN107417025A (en) * | 2017-08-10 | 2017-12-01 | 西安瑞联新材料股份有限公司 | A kind of processing method of folic acid sulfur waste sour water |
| CN108706562A (en) * | 2018-08-14 | 2018-10-26 | 武汉轻工大学 | A method of preparing ferric phosphate using pyrite cinder |
| CN109336189A (en) * | 2018-08-27 | 2019-02-15 | 浙江长华科技股份有限公司 | A method of preparing ferrous sulfate |
| CN109336189B (en) * | 2018-08-27 | 2021-04-09 | 浙江长华科技股份有限公司 | Method for preparing ferrous sulfate |
| CN109928510A (en) * | 2019-01-29 | 2019-06-25 | 南京农业大学 | A kind of Schwertmannite preparation method based on ZVI reduction coupling microorganism |
| CN109928510B (en) * | 2019-01-29 | 2021-10-08 | 南京农业大学 | ZVI reduction coupling microorganism-based Schwerner mineral preparation method |
| CN110066920A (en) * | 2019-05-31 | 2019-07-30 | 中国科学院过程工程研究所 | A method of Selectively leaching separation vanadium and iron from bone coal navajoite |
| CN113385138A (en) * | 2021-06-21 | 2021-09-14 | 南京贝克特环保科技有限公司 | Preparation method and application of Schneider mineral |
| WO2023187256A1 (en) * | 2022-03-29 | 2023-10-05 | Kemira Oyj | A method for producing ferrous sulphate and phosphoric acid |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1233562C (en) | 2005-12-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100537435C (en) | Method for manufacturing iron oxide with waste slag containing iron | |
| CN103540765B (en) | Zinc smelting technology | |
| CN1233562C (en) | Preparation method of ferrous sulfate | |
| CN101717858B (en) | Method for extracting molybdenum, nickel, vanadium and ferrum from polymetallic black-shale paragentic minerals | |
| CN103508507B (en) | The removal of the steel slag tailings after magnetic separation underwater gold is utilized to belong to the method for ion | |
| CN109231181B (en) | Processing method, ternary precursor, battery-grade iron phosphate and the lithium ion battery of iron vitriol dreg of yellow sodium | |
| CN100582049C (en) | Method for increasing content of silicon dioxide in silicon ash and producing white carbon black | |
| CN101381086B (en) | Method for preparing Si-MCM-41 mesopore molecular sieve | |
| CN115463935B (en) | Method for preparing lithium battery anode material lithium iron phosphate by using iron-rich solid waste in metallurgical industry | |
| CN1284259C (en) | Method for preparing manganese-zinc ferrite granules and mixed carbonate by using waste dry batteries | |
| Yu et al. | Effect of chemical composition on the element distribution, phase composition and calcification roasting process of vanadium slag | |
| WO2023004925A1 (en) | Method for enriching and recovering chromium resources by synergistic utilization of chromium-containing sludge and chromium-containing waste residue | |
| CN113023987A (en) | Method for treating arsenic-containing wastewater | |
| CN1019317B (en) | Method of iron removing in the process of cadmium extraction | |
| CN110257851B (en) | Special electrolytic manganese dioxide for lithium manganate battery and preparation method thereof | |
| CN106904654A (en) | The method of EAF dust coproduction chromic salts and electrode material | |
| RU2649208C1 (en) | Method for processing titanomagnetite crude ore | |
| CN1143611A (en) | Method for producing iron oxide yellow using sulfuric acid roasting residue | |
| CN1772628A (en) | Prepn process of iron red with salfated roasted dreg of sulfur containing aurin ore | |
| CN110468287B (en) | Method for removing iron by goethite method by using manganese-containing smoke dust as catalyst | |
| CN115072687B (en) | Method for preparing battery-grade ferric phosphate by using sulfuric acid cinder | |
| CN112266191A (en) | Method for pretreating phosphogypsum by using steel slag | |
| CN102011012A (en) | Method for preparing lead ingots, zinc powder and mixed iron slag from waste residues in lithopone production | |
| CN107555482A (en) | A kind of method and additive that Manganese Ferrite spinel is prepared using high lead high phosphorus promoter manganese | |
| CN116809073A (en) | Recoverable catalyst for sulfur-containing wastewater treatment, preparation method and application |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051228 Termination date: 20110125 |