CN116377260A - Method for removing copper in crude antimony alloy by using antimony crystal salt - Google Patents
Method for removing copper in crude antimony alloy by using antimony crystal salt Download PDFInfo
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- CN116377260A CN116377260A CN202310247127.2A CN202310247127A CN116377260A CN 116377260 A CN116377260 A CN 116377260A CN 202310247127 A CN202310247127 A CN 202310247127A CN 116377260 A CN116377260 A CN 116377260A
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- antimony
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- antimony alloy
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- 239000010949 copper Substances 0.000 title claims abstract description 77
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 68
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 229910052787 antimony Inorganic materials 0.000 title claims abstract description 58
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 229910001245 Sb alloy Inorganic materials 0.000 title claims abstract description 48
- 239000002140 antimony alloy Substances 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 27
- 150000003839 salts Chemical class 0.000 title claims abstract description 23
- 239000013078 crystal Substances 0.000 title claims abstract description 18
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 27
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000003723 Smelting Methods 0.000 claims abstract description 12
- 239000002893 slag Substances 0.000 claims abstract description 12
- 239000004317 sodium nitrate Substances 0.000 claims abstract description 12
- 235000010344 sodium nitrate Nutrition 0.000 claims abstract description 12
- 238000007670 refining Methods 0.000 claims abstract description 9
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 8
- 229910052785 arsenic Inorganic materials 0.000 claims abstract description 7
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000000571 coke Substances 0.000 claims abstract description 4
- 239000007800 oxidant agent Substances 0.000 claims abstract description 4
- 238000000926 separation method Methods 0.000 claims abstract description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 4
- 230000001590 oxidative effect Effects 0.000 claims abstract description 3
- 238000002156 mixing Methods 0.000 claims description 13
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 8
- 229910052717 sulfur Inorganic materials 0.000 claims description 8
- 239000011593 sulfur Substances 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 5
- 230000005496 eutectics Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000002195 synergetic effect Effects 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 12
- 239000000463 material Substances 0.000 description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 239000011574 phosphorus Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- FAWGZAFXDJGWBB-UHFFFAOYSA-N antimony(3+) Chemical compound [Sb+3] FAWGZAFXDJGWBB-UHFFFAOYSA-N 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- KGHMFMDJVUVBRY-UHFFFAOYSA-N antimony copper Chemical compound [Cu].[Sb] KGHMFMDJVUVBRY-UHFFFAOYSA-N 0.000 description 1
- GHPGOEFPKIHBNM-UHFFFAOYSA-N antimony(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Sb+3].[Sb+3] GHPGOEFPKIHBNM-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000009853 pyrometallurgy Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
-
- 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
- C22B30/00—Obtaining antimony, arsenic or bismuth
- C22B30/02—Obtaining antimony
-
- 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
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents
-
- 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
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/10—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals with refining or fluxing agents; Use of materials therefor, e.g. slagging or scorifying agents
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C12/00—Alloys based on antimony or bismuth
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a method for removing copper in crude antimony alloy by using antimony crystal salt, which comprises the following steps: the copper-containing high-antimony smelting slag, coke and sodium carbonate are blended according to a certain proportion and are subjected to reduction smelting at a high temperature to produce crude antimony alloy containing 1% -3% of copper; adding sodium hydroxide and sodium nitrate mixed according to a certain proportion into the crude antimony alloy by using a refining pot, so that arsenic and copper in the crude antimony alloy enter a slag phase under the action of a strong oxidant, and realizing primary separation of copper in the crude antimony alloy; and carrying out synergistic treatment on the crude antimony alloy after preliminary copper removal and antimony crystal salt for fire refining, and reducing the copper grade in the crude antimony alloy to below 0.03%, wherein the copper grade is lower than the national standard of antimony No. two. The technical scheme provided by the invention can effectively solve the problem of removing impurity copper in the antimony production process, realize open circuit of copper element, avoid the influence of copper enrichment on the antimony production process in the process, and realize the effective recovery of antimony in the crystalline salt by utilizing the synergistic treatment of the antimony crystalline salt, thereby having significant economic benefit and having important significance in expanding the application field of antimony products in industry.
Description
Technical Field
The invention belongs to the technical field of pyrometallurgy processes, and relates to a method for removing copper in crude antimony alloy by using antimony crystal salt.
Background
The traditional fire process for smelting antimony uses stibium ore (Sb 2 S 3 ) Raw materials are roasted by a blast furnace and then reduced and smelted to produce crude antimony. Copper generally enters the slag phase and the copper content of the crude antimony is small, so that separate copper removal is not needed. However, as antimony resources are increasingly poor, high-quality antimony ores cannot meet the development requirements of antimony industry, and blast furnace byproducts, namely high copper antimony slag, reverberatory furnace alkaline slag and antimony white furnace bottom water, are roasted and reduced to obtain crude antimony which becomes an important secondary resource for smelting antimony. However, the grade of copper in the produced crude antimony is obviously increased, copper elements are used as impurity elements to influence the quality of antimony products in the nonferrous metal antimony smelting process, and the fire refining of the crude antimony to remove copper is a difficult problem facing the current antimony industry.
The antimony crystal salt is an intermediate material produced in the process of treating antimony-containing gold concentrate by adopting a wet alkaline leaching process, and the main component of the antimony crystal salt is a compound composed of sulfur element and antimony element, belongs to the solid waste category, and currently has no proper treatment process for the antimony crystal salt.
Aiming at the fact that the copper removal process in crude antimony is single, a liquation method or a liquation-sulphuration method is basically adopted for combined copper removal, such as a copper removal agent for antimony smelting production and application thereof (CN 111041231A) proposed by Wang Weiguo of Guangxi Mo Shizhi rare noble metal technology, inc., the copper removal agent for antimony smelting production is developed and comprises elemental sulfur or a sulfur-containing compound and comprises elemental phosphorus or a phosphorus-containing compound; the copper removing agent for antimony refining is prepared by singly using the two substances of the elemental sulfur or the sulfur-containing compound and the elemental phosphorus or the phosphorus-containing compound or mixing the two substances according to a certain proportion. A method for treating an antimony-containing high-tin high-copper alloy (CN 109306409A) is proposed by Mongolian mining and metallurgy Limited liability company Xu Peilun and the like, wherein the temperature is utilized to gradually decrease from top to bottom in sequence
Separating tin, antimony and copper. Both the above two processes adopt a liquation-sulphuration copper removal mode to separate copper from antimony, but in order to reduce the grade of copper elements below a certain range, the above processes firstly need to repeatedly adjust the temperature difference to carry out liquation copper removal, thus seriously affecting the production efficiency of antimony; in the process of adding sulfur, the sulfur can react with copper after reacting with antimony, excessive sulfide is needed, and a large amount of solid slag can be formed by the excessive sulfide in the subsequent production process, so that the subsequent environmental protection cost is increased.
Disclosure of Invention
In order to overcome the problems in the prior art, the invention provides a method for removing copper in the crude antimony alloy by using antimony crystal salt, which utilizes the complementary advantages of two antimony-containing material elements to carry out synergistic treatment, and realizes the efficient removal of copper in the crude antimony alloy.
The technical scheme of the invention is realized as follows: a method for removing copper from a crude antimony alloy using an antimony crystalline salt, comprising the steps of:
a, mixing the antimony smelting slag, coke and sodium carbonate according to the proportion of 100: (5-8): (5-12) ore blending is reduced and smelted at 1200-1250 ℃, and then the temperature is reduced to 900-1000 ℃ to produce crude antimony alloy with copper content of 1-3%;
b, adding sodium hydroxide and sodium nitrate mixed according to 100 (10-15) (3-5) into the crude antimony alloy at 580-650 ℃ by using a refining pot, so that arsenic and copper in the crude antimony alloy form Cu under the action of strong oxidant sodium nitrate 3 As and Cu 2 As and eutectic compounds formed by the As and the simple substance Cu enter a slag phase, so that preliminary separation of copper in the crude antimony alloy is realized;
c, mixing the crude antimony alloy obtained in the step b with antimony crystal salt according to the proportion of 100: (8-12) mixing treatment, utilizing sulfur and antimony elements contained in antimony crystal salt and Cu in crude antimony alloy 2 The Sb reaction is carried out for deeply removing copper, and the copper grade in the crude antimony alloy is reduced to below 0.03 percent.
The reaction mechanism is as follows:
Sb x S y +yCu 2 Sb=yCu 2 S+(x+y)Sb
compared with the prior art, the method for removing copper in the crude antimony alloy by using the antimony crystal salt has the outstanding substantial characteristics and obvious technical progress:
the method has the remarkable advantages of clear flow, easy operation, good environment, strong process adaptability and the like, mainly utilizes the combination of the antimony crystal salt and the high-copper crude antimony alloy for treatment, realizes the removal of copper element by utilizing the complementary advantages among elements, and simultaneously recovers the antimony element in the antimony crystal salt, thereby having higher economic benefit.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Description of the embodiments
For a better understanding and implementation, a method for removing copper from a crude antimony alloy using an antimony crystalline salt is described in detail below with reference to the accompanying drawings, comprising the steps of:
example 1: the content of each element in the high-copper crude antimony alloy is shown in the following table:
the content of each element in the high copper crude antimony alloy is shown as the percentage
| Element(s) | Au* | Ag | Sb | Cu | As |
| Content (%) | 806 | 6.99 | 30.66 | 2.58 | 9.50 |
Remarks: the unit of the element is g/t.
The method comprises the following steps:
a, mixing the antimony smelting slag, coke and sodium carbonate according to the proportion of 100:6:10 ore blending is reduced and smelted at 1230 ℃, and then the temperature is reduced to 950 ℃ to produce crude antimony alloy with copper content of 2.58%, wherein the content of each element in the crude antimony alloy is shown in the table I;
b, adding sodium hydroxide and sodium nitrate mixed according to a ratio of 100:12:4 into the crude antimony alloy by using a refining pot at 620 ℃ to enable arsenic and copper in the crude antimony alloy to form Cu under the action of strong oxidizer sodium nitrate 3 As and Cu 2 As and eutectic compounds formed by the As and the simple substance Cu enter a slag phase, so that preliminary separation of copper in the crude antimony alloy is realized;
c, mixing the crude antimony alloy obtained in the step b with antimony crystal salt according to the proportion of 100:10, mixing and processing, utilizing sulfur and antimony elements contained in antimony crystal salt and Cu in crude antimony alloy 2 Deep copper removal is carried out by Sb reaction, and the copper grade in the crude antimony alloy is reduced to 0.02%。
Comparative example 1: the crude antimony alloy produced by smelting is subjected to preliminary decoppering by using a refining pot under the condition of 600 ℃ without adding any auxiliary materials.
Comparative example 2: the crude antimony alloy produced by smelting is added with sodium hydroxide and sodium nitrate mixed according to the ratio of 100:10:3 by a refining pot at 600 ℃ for preliminary decoppering.
The preliminary decoppering results of comparative examples 1 and 2 are as follows:
copper removal without auxiliary materials and preliminary removal of the content of each element in the crude antimony alloy by sodium hydroxide and sodium nitrate
| Comparative example | Auxiliary materials | Element(s) | Au* | Ag | Sb | Cu | As |
| Comparative example 1 | Blank space | Content (%) | 952 | 7.23 | 31.52 | 2.02 | 8.23 |
| Comparative example 2 | Sodium hydroxide, sodium nitrate | Content (%) | 1254 | 9.35 | 34.25 | 1.25 | 2.55 |
Remarks: the unit of the element is g/t.
TABLE III EXAMPLE 1 crude antimony alloy content (%)
| Element(s) | Au* | Ag | Sb | Cu | As |
| Content (%) | 1454 | 9.55 | 35.18 | 0.02 | 0.12 |
Conclusion: as can be seen by comparing the data of the example 1 with the data of the comparative example 1 and the data of the comparative example 2, the copper content of the crude antimony alloy after preliminary copper removal in the case of the comparative example 1 without adding any auxiliary materials is 2.02%, the copper content of the crude antimony alloy after preliminary copper removal in the comparative example 2 by adopting sodium hydroxide and sodium nitrate is 1.25%, and the copper element content of the crude antimony alloy after preliminary copper removal and deep copper removal in the example 1 by adopting sodium hydroxide and sodium nitrate is 0.02%. The final copper removal effect of example 1 is 101 times that of comparative example 1, 62.5 times that of comparative example 2, and the economic benefit is remarkable.
Claims (1)
1. A method for removing copper from a crude antimony alloy using an antimony crystalline salt, comprising the steps of:
a, mixing the antimony smelting slag, coke and sodium carbonate according to the proportion of 100: (5-8): (5-12) ore blending is reduced and smelted at 1200-1250 ℃, and then the temperature is reduced to 900-1000 ℃ to produce crude antimony alloy with copper content of 1-3%;
b, adding sodium hydroxide and sodium nitrate mixed according to 100 (10-15) (3-5) into the crude antimony alloy at 580-650 ℃ by using a refining pot, so that arsenic and copper in the crude antimony alloy form Cu under the action of strong oxidant sodium nitrate 3 As and Cu 2 As and eutectic compounds formed by the As and the simple substance Cu enter a slag phase, so that preliminary separation of copper in the crude antimony alloy is realized;
c, mixing the crude antimony alloy obtained in the step b with antimony crystal salt according to the proportion of 100: (8-12) mixing treatment, utilizing sulfur and antimony elements contained in antimony crystal salt and Cu in crude antimony alloy 2 The Sb reaction is carried out for deeply removing copper, and the copper grade in the crude antimony alloy is reduced to below 0.03 percent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310247127.2A CN116377260A (en) | 2023-03-15 | 2023-03-15 | Method for removing copper in crude antimony alloy by using antimony crystal salt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310247127.2A CN116377260A (en) | 2023-03-15 | 2023-03-15 | Method for removing copper in crude antimony alloy by using antimony crystal salt |
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| Publication Number | Publication Date |
|---|---|
| CN116377260A true CN116377260A (en) | 2023-07-04 |
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| CN202310247127.2A Pending CN116377260A (en) | 2023-03-15 | 2023-03-15 | Method for removing copper in crude antimony alloy by using antimony crystal salt |
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| Country | Link |
|---|---|
| CN (1) | CN116377260A (en) |
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2023
- 2023-03-15 CN CN202310247127.2A patent/CN116377260A/en active Pending
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