CN115247232B - Settling separation method for chalcanthite slag calcified products - Google Patents
Settling separation method for chalcanthite slag calcified products Download PDFInfo
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- CN115247232B CN115247232B CN202210195260.3A CN202210195260A CN115247232B CN 115247232 B CN115247232 B CN 115247232B CN 202210195260 A CN202210195260 A CN 202210195260A CN 115247232 B CN115247232 B CN 115247232B
- Authority
- CN
- China
- Prior art keywords
- heavy metal
- slag
- ferric hydroxide
- iron vitriol
- calcified
- 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.)
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- 239000002893 slag Substances 0.000 title claims abstract description 31
- 238000000926 separation method Methods 0.000 title claims abstract description 18
- 229910052927 chalcanthite Inorganic materials 0.000 title claims description 4
- 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 26
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 26
- 229960004887 ferric hydroxide Drugs 0.000 claims abstract description 25
- IEECXTSVVFWGSE-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Fe+3] IEECXTSVVFWGSE-UHFFFAOYSA-M 0.000 claims abstract description 25
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 22
- 239000000047 product Substances 0.000 claims abstract description 20
- 239000011575 calcium Substances 0.000 claims abstract description 11
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 10
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000002738 chelating agent Substances 0.000 claims abstract description 8
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 8
- 239000010440 gypsum Substances 0.000 claims abstract description 8
- 239000011259 mixed solution Substances 0.000 claims abstract description 8
- 239000000243 solution Substances 0.000 claims abstract description 7
- 239000002244 precipitate Substances 0.000 claims abstract description 6
- 239000007787 solid Substances 0.000 claims abstract description 5
- 239000008394 flocculating agent Substances 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims abstract description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 9
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 5
- 239000011230 binding agent Substances 0.000 claims description 5
- 229910052739 hydrogen Inorganic materials 0.000 claims description 5
- 239000001257 hydrogen Substances 0.000 claims description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 4
- 235000019738 Limestone Nutrition 0.000 claims description 4
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 4
- 239000004571 lime Substances 0.000 claims description 4
- 239000006028 limestone Substances 0.000 claims description 4
- 238000004062 sedimentation Methods 0.000 claims description 4
- UOFGSWVZMUXXIY-UHFFFAOYSA-N 1,5-Diphenyl-3-thiocarbazone Chemical compound C=1C=CC=CC=1N=NC(=S)NNC1=CC=CC=C1 UOFGSWVZMUXXIY-UHFFFAOYSA-N 0.000 claims description 3
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 3
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 3
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 3
- 241001584775 Tunga penetrans Species 0.000 claims description 3
- DGEZNRSVGBDHLK-UHFFFAOYSA-N [1,10]phenanthroline Chemical compound C1=CN=C2C3=NC=CC=C3C=CC2=C1 DGEZNRSVGBDHLK-UHFFFAOYSA-N 0.000 claims description 3
- 235000015165 citric acid Nutrition 0.000 claims description 3
- MGFYIUFZLHCRTH-UHFFFAOYSA-N nitrilotriacetic acid Chemical compound OC(=O)CN(CC(O)=O)CC(O)=O MGFYIUFZLHCRTH-UHFFFAOYSA-N 0.000 claims description 3
- 235000006408 oxalic acid Nutrition 0.000 claims description 3
- 229920002401 polyacrylamide Polymers 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 229920005552 sodium lignosulfonate Polymers 0.000 claims description 3
- 239000011975 tartaric acid Substances 0.000 claims description 3
- 235000002906 tartaric acid Nutrition 0.000 claims description 3
- 229920002472 Starch Polymers 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- 235000019698 starch Nutrition 0.000 claims description 2
- 239000008107 starch Substances 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 229910052742 iron Inorganic materials 0.000 description 7
- 229910052935 jarosite Inorganic materials 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 238000009854 hydrometallurgy Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 229910052725 zinc Inorganic materials 0.000 description 6
- 239000011701 zinc Substances 0.000 description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 5
- 150000002500 ions Chemical class 0.000 description 4
- 229940037003 alum Drugs 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 229910052738 indium Inorganic materials 0.000 description 3
- 230000001376 precipitating effect Effects 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 230000002308 calcification Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- JQJCSZOEVBFDKO-UHFFFAOYSA-N lead zinc Chemical compound [Zn].[Pb] JQJCSZOEVBFDKO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/46—Sulfates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/16—Sintering; Agglomerating
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
- C22B1/243—Binding; Briquetting ; Granulating with binders inorganic
-
- 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The patent discloses a settling separation method of a calcified product of iron vitriol slag, which comprises the steps of adding a calcium source, an interfacial agent and a chelating agent into the iron vitriol slag, and uniformly mixing to obtain the calcified product; settling and separating calcified products to obtain gypsum and ferric hydroxide heavy metal mixed solution; adding a flocculating agent into the ferric hydroxide heavy metal mixed solution, and carrying out liquid-solid separation to obtain ferric hydroxide precipitate and heavy metal solution. Compared with the prior art, the method has the advantages of simple operation, low cost and high calcified product purity.
Description
Technical Field
The invention relates to a hydrometallurgical process, in particular to a method for separating iron and sulfur from iron vitriol slag generated in the hydrometallurgical process and recovering heavy metals.
Background
The iron vitriol slag is a precipitation product of a byproduct of iron removal by adopting a jarosite method in ferrous sulfuric acid leaching liquid in hydrometallurgy industry, and is abbreviated as iron vitriol or iron vitriol slag. According to different alum precipitating agents, the main phases of the obtained precipitation product are jarosite, sodium jarosite or ammonium jarosite respectively. Jarosite process iron removal is commonly used in the zinc hydrometallurgy, nickel hydrometallurgy and lithium battery recovery industries. For example, in the zinc hydrometallurgy industry, about 85% of enterprises worldwide use jarosite to remove iron, and a precipitated alum product, i.e., jarosite slag, is obtained. Indium is often associated with lead-zinc ore, and because of its similar chemical properties to iron, the associated indium easily enters the crystal lattice of the iron vitriol during the process of precipitating the alum, and thus enters the iron vitriol slag. In addition, zinc may also partially replace iron into the crystal lattice of the iron vitriol. The iron vitriol slag has large quantity, poor stability and acidity, contains Cd, as, pb and the like besides heavy metals In and Zn, and is listed In the national hazardous waste directory (waste code: 321-005-48). Zinc is a common metal and has wide application in the mechanical industry, the national defense industry and the transportation industry, and China is used as a large country for zinc production and consumption and is the first place in the world for many years. At present, the accumulation amount of the iron vitriol slag in China exceeds 3500 ten thousand t and increases at a speed of over 100 ten thousand t each year. In the hydrometallurgical industry, development of new technology for recycling iron vitriol slag is needed.
Disclosure of Invention
Compared with the prior art, the method has the advantages of simple operation, low cost and obvious economic and social benefits.
The settling separation method of the chalcanthite slag calcified products comprises the following steps:
adding a calcium source, an interfacial agent and a chelating agent into the iron vitriol slag, and uniformly mixing to obtain a calcified product; settling and separating calcified products to obtain gypsum and ferric hydroxide heavy metal mixed solution; adding a flocculating agent into the ferric hydroxide heavy metal mixed solution, and carrying out liquid-solid separation to obtain ferric hydroxide precipitate and heavy metal solution.
The calcium source is one of lime, carbide slag and limestone, and the addition amount is 10-50% of the mass of the iron vitriol slag.
The interfacial agent is one of citric acid, tartaric acid and oxalic acid, and the addition amount is 1.0-5.0% of the mass of the iron vitriol slag.
The chelating agent is one of ethylenediamine tetraacetic acid, aminotriacetic acid, dithizone and phenanthroline, and the addition amount is 1.0-5.0% of the mass of the iron vitriol slag.
The equipment used for sedimentation separation is one of a cyclone, an interference bed and a jigger.
The flocculant is one of polyacrylamide, sodium lignosulfonate and starch, and the addition amount is 1.0-5.0% of the mass of the iron vitriol slag.
And the ferric hydroxide precipitate is subjected to filter pressing, is added with a binder to form balls, and is sintered by hydrogen to be used as an iron-making raw material.
And the heavy metal solution returns to a metallurgical system to recycle heavy metal.
Compared with the prior art, the invention has the following advantages:
the calcium source is one of lime, carbide slag and limestone, the iron vitriol slag is an acidic substance, and can be decomposed under neutral or alkaline conditions, and the calcium source is added to decompose the iron vitriol slag to obtain calcified products. Lime is obtained by electrically heating limestone, and the byproduct carbon dioxide is used for curing low-calcium cement products, so that the early performance of the low-calcium cement products is improved, and the environmental influence caused by carbon dioxide emission is avoided.
The interfacial agent is one of citric acid, tartaric acid and oxalic acid, and can be adsorbed on the surface of ferric hydroxide to obtain nano ferric hydroxide, and the particle size of the nano ferric hydroxide is less than 100nm. The interfacial agent also can prevent gypsum from growing into a columnar shape, and large isometric particles with the particle size larger than 50 μm are obtained. The particle size difference of the calcified product gypsum and ferric hydroxide is large, which is favorable for sedimentation separation.
The chelating agent is one of ethylenediamine tetraacetic acid, aminotriacetic acid, dithizone and phenanthroline, and is easy to interact with heavy metal ions, so that the heavy metal ions enter the solution under neutral or alkaline conditions, the heavy metal ions are prevented from precipitating in the calcification process, entering the internal structure of ferric hydroxide or gypsum, and being adsorbed on the surface of ferric hydroxide or gypsum, and the heavy metal ions are prevented from being recovered.
The equipment used for sedimentation separation is one of a cyclone, an interference bed and a jigger, and the equipment is gravity separation equipment, so that the high-efficiency separation of the fine-particle-grade particles can be realized, and the device has the characteristics of low operation cost and high separation efficiency.
The flocculant is one of polyacrylamide, sodium lignosulfonate and polyacrylic acid, so that nano ferric hydroxide particles can be quickly settled, and liquid-solid separation is facilitated.
The ferric hydroxide sediment is subjected to filter pressing, so that the water content in the sediment is further reduced. The ferric hydroxide is added into the binder to form balls, the binder is one of bentonite, montmorillonite and kaolin, and the addition amount is 1-10% of the mass of the iron vitriol slag. The addition of the binder ensures that the ferric hydroxide balls are not cracked or damaged in the sintering process. After the ferric hydroxide is sintered, pellets are obtained, which is beneficial to iron making. The hydrogen sintering is adopted to avoid carbon dioxide emission, which is beneficial to environmental protection. The hydrogen is green hydrogen generated by the electrolysis of water by renewable energy sources.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Adding a calcium source, an interfacial agent and a chelating agent into the iron vitriol slag, and uniformly mixing to obtain a calcified product; settling and separating calcified products to obtain gypsum and ferric hydroxide heavy metal mixed solution; adding a flocculating agent into the ferric hydroxide heavy metal mixed solution, and carrying out liquid-solid separation to obtain ferric hydroxide precipitate and heavy metal solution. The formulations of the calcium source, the interfacial agent and the chelating agent are shown in Table 1, and the separation equipment, the flocculant and the separation efficiency are shown in Table 2.
TABLE 1
TABLE 2
Embodiments of the present invention can be implemented and the object of the present invention can be achieved, and the present invention is not limited to these embodiments.
Claims (1)
1. The method for settling and separating the chalcanthite slag calcified products is characterized by comprising the following steps in sequence: adding a calcium source, an interfacial agent and a chelating agent into the iron vitriol slag, and uniformly mixing to obtain a calcified product; settling and separating calcified products to obtain gypsum and ferric hydroxide heavy metal mixed solution; adding a flocculating agent into the ferric hydroxide heavy metal mixed solution, and carrying out liquid-solid separation to obtain ferric hydroxide precipitate and a heavy metal solution; wherein the calcium source is one of lime, carbide slag and limestone, and the addition amount is 10-50% of the mass of the iron vitriol slag; the interfacial agent is one of citric acid, tartaric acid and oxalic acid, and the addition amount is 1.0-5.0% of the mass of the iron vitriol slag; the chelating agent is one of ethylenediamine tetraacetic acid, aminotriacetic acid, dithizone and phenanthroline, and the addition amount is 1.0-5.0% of the mass of the iron vitriol slag; the equipment used for sedimentation separation is one of a cyclone, an interference bed and a jigger; the flocculant is one of polyacrylamide, sodium lignosulfonate and starch, and the addition amount is 1.0-5.0% of the mass of the iron vitriol slag; the ferric hydroxide precipitate is formed into balls by filter pressing and adding a binder, and the balls are sintered by hydrogen to be used as iron-making raw materials; and the heavy metal solution is returned to the metallurgical system to recycle the heavy metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210195260.3A CN115247232B (en) | 2022-03-02 | 2022-03-02 | Settling separation method for chalcanthite slag calcified products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210195260.3A CN115247232B (en) | 2022-03-02 | 2022-03-02 | Settling separation method for chalcanthite slag calcified products |
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| Publication Number | Publication Date |
|---|---|
| CN115247232A CN115247232A (en) | 2022-10-28 |
| CN115247232B true CN115247232B (en) | 2024-04-09 |
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|---|---|---|---|---|
| WO1988003911A1 (en) * | 1986-11-26 | 1988-06-02 | Resource Technology Associates | Process for recovering metal values from jarosite solids |
| CN1791690A (en) * | 2003-04-23 | 2006-06-21 | 奥托昆普技术公司 | Method for handling waste material generated in a metallurgical process. |
| WO2013165071A1 (en) * | 2012-04-30 | 2013-11-07 | 전남대학교산학협력단 | Method for producing high-purity manganese sulfate monohydrate and high-purity manganese sulfate monohydrate produced by the method |
| CN105039712A (en) * | 2015-08-14 | 2015-11-11 | 陕西理工学院 | Technology for recycling valuable metal from jarosite slag |
| CN105567961A (en) * | 2016-01-18 | 2016-05-11 | 西南科技大学 | Method for separating iron and sulfur in jarosite slag through biological technique |
| CN106676221A (en) * | 2016-12-06 | 2017-05-17 | 江苏省冶金设计院有限公司 | Jarosite slag treatment method and system |
| CN107108443A (en) * | 2014-12-17 | 2017-08-29 | 拜欧弗印度制药有限公司 | The improved method for synthesizing ferric organic compounds |
| CN109970105A (en) * | 2019-04-24 | 2019-07-05 | 西南科技大学 | A kind of method of cleaning recycling iron in Zinc hydrometallurgy process |
| CN110358925A (en) * | 2019-07-29 | 2019-10-22 | 中南大学 | A kind of method of chemistry freeze thawing treatment iron vitriol slag |
| CN111549235A (en) * | 2019-02-08 | 2020-08-18 | 北京中金瑞丰环保科技有限公司 | Separation method of lead-containing raw material |
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2022
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