CN1020381C - Conversion treatment of lead-base gold or lead ores with soda - Google Patents
Conversion treatment of lead-base gold or lead ores with soda Download PDFInfo
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- CN1020381C CN1020381C CN89109462A CN89109462A CN1020381C CN 1020381 C CN1020381 C CN 1020381C CN 89109462 A CN89109462 A CN 89109462A CN 89109462 A CN89109462 A CN 89109462A CN 1020381 C CN1020381 C CN 1020381C
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- lead
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- 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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Abstract
The present invention provides a process for conversion treatment on lead-base gold ore or lead ore by sodium carbonate. Crushed lead-base gold ore or lead ore is converted into lead carbonate in a sodium carbonate solution under ordinary pressure by using air, etc. as an oxidant. After conversion, lead carbonate and sulfur concentrated ore are separated by flotation, the metals such as gold, silver, lead, etc., in the lead carbonate and the sulfur concentrated ore can be recycled by a conventional method, and the total yield can reach more than 96%. The process of the present invention has the advantages of simple process, no three-waste pollution, no special requirement for device materials and easy industrialization realization. The obtained lead carbonate can be directly used for preparing chemical industrial products such as tribasic lead sulfate, lead monoxide, etc., and have high economic benefit.
Description
The invention belongs to precious metal smelting and heavy non-ferrous metal smelting field.Be suitable for handling various types of lead-base golds or lead ore, be particularly suitable for handling leaded grade lower, contain the higher reluctant lead-base gold of usefulness ordinary method of copper grade.
Lead-base gold or lead ore are used pyrometallurgical smelting usually.Pyrometallurgical smelting requires ore grade greater than 50%, and copper grade is lower than 1%.If plumbous grade is lower than 50%, copper grade is higher than at 1% o'clock, then energy consumption is very high, a large amount of reluctant lead mattes of output, and metal recovery rate is lower.When lead-base gold or lead ore pyrometallurgical smelting, produce a large amount of lead and sulfur dioxide gas polluting environment, operator's lead poisoning is serious.(" plumbous metallurgical " metallurgical press 1976 version 16～17 pages)
Lu Keyuan etc. had once carried out the research of volatile salt conversion method processing lead-base gold.
(" Hydrometallurgy "), 17(1986) 73-83) this technology is that in sal volatile, at 50～60 ℃, blowing air made lead glance change into lead carbonate after lead-base gold was pulverized, and has 50% copper to leach simultaneously; Lead carbonate becomes metallic lead with the insoluble anode electrolytic reduction; Elements such as gold and silver extract with conventional cyanide process in the dissolving slag; Conversion fluid ammonia still process method ammonifying and carbonic acid gas again reclaim copper with the cupric oxide form simultaneously.This technology is fairly simple, and productive expense is also lower, is difficult to difficulties such as processing but exist conversion fluid ammonia still process easily to scab and pay a large amount of ammonium sulfate dilute solutions of product, is difficult to realize for the moment industrialization.
The purpose of this invention is to provide one and be fit to handle various types of lead-base golds or lead ore, three-waste free pollution, technology is simple, is easy to industrialized method.
The present invention is after earlier lead-base gold or lead ore being pulverized, and in sodium carbonate solution, under normal pressure and 20～100 ℃, bubbling air or oxygen under agitation react, and make lead glance change into lead carbonate and sodium sulfate.During conversion, copper, gold and silver leach seldom in the ore, all below 1%.Transform liquid-solid separation in back and washing, the filtrate major part is returned conversion procedure, and small portion adds sodium sulphite earlier and is settled out a spot of copper in the filtrate, gold and silver ion, and crystallisation by cooling goes out sodium sulfate again.Sodium sulfate is made yellow soda ash with leblanc process, recycles.Transform slag and lead carbonate in the ore is separated with other unreacted sulfide, obtain a mine tailing (lead carbonate) and a sulphur concentrate with flotation.Leaded greater than 50% in the mine tailing, cupric is lower than 0.9%, and sulfur-bearing is lower than 3%.The reduction temperature of lead carbonate is 650 ℃, adopts the low-temperature reduction melting, lead carbonate can be reduced into metallic lead, and gold and silver enter in the metallic lead in the ore, can extract with ordinary method.The low smelting heat three-waste pollution is very little.Sulphur concentrate sulfur-bearing is higher than 35%, leadedly is lower than 6%, with roasting-acidleach-salt soak-cyanidation technology reclaims elements such as gold and silver, copper, sulphur.
When yellow soda ash transformed, used concentration of sodium carbonate too rarely will strengthen liquid-solid ratio and make speed of response slack-off in 10～200 grams per liter scopes, the too dense consumption that will increase yellow soda ash, and optimum range is 80～120 grams per liters.Invert point is controlled in 20～100 ℃ of scopes, and optimum temps is 50～80 ℃.
Yellow soda ash conversion processing lead-base gold provided by the invention or lead ore technology, plumbous transformation efficiency reaches more than 99%, and the total yield of principal elements such as gold and silver, lead all can reach more than 96%.
Yellow soda ash conversion processing lead-base gold provided by the invention or lead ore technology, except that yellow soda ash was converted into new technology, other all adopted mature technology.The yellow soda ash conversion process is simpler, is atmospheric operation, and equipment material is not had particular requirement.When yellow soda ash transforms, metal such as copper leaches seldom in the ore, it is very convenient that conversion fluid is handled, as long as adopt simple sulfide precipitation and two operations of crystallisation by cooling, overcome volatile salt and transformed that the ammonia still process that exists scabs and the difficulty of the bad processing of dilute concentration ammoniumsulphate soln.The yellow soda ash conversion process is simple, and is easy to operate, three-waste free pollution, and the metal recovery rate height, comprehensive utilization is made good use of, and is easy to realize industrialization, is convenient to promote, and has higher economic and social benefit.
Yellow soda ash conversion processing lead-base gold provided by the invention or lead ore operation, the lead carbonate of output is smelted into the metallic lead except that available low-temperature reduction, also can directly be used for producing various plumbous chemical industry products, as lead sulfate tribasic, yellow lead etc., quality product can reach the first grade standard.Lead carbonate system lead chemical product has higher economic benefit than low smelting heat.Lead carbonate system lead chemical product is to the not influence of extraction of gold and silver.
Below be two operational instances of yellow soda ash conversion processing lead-base gold technology:
Example 1: certain lead-base gold is leaded 43%, cupric 2.34%, and sulfur-bearing 18.9%, iron content 15.4% contains gold 44.5 gram/tons, argentiferous 347 gram/tons.Ore reduction to 90% less than 300 orders/cun
2, in 100 grams per liter sodium carbonate solutions, transforming, conversion condition is: liquid-solid ratio=6: 1 meters
3/ ton, 80 ℃, 12 hours, bubbling air, mixing speed=820 rev/min.Plumbous transformation efficiency reaches more than 99%.After the conversion, the liquid-solid separation of ore pulp, the filtrate major part is returned use, and small portion adds sodium sulphite earlier and is settled out metal ion in the conversion fluid, and crystallisation by cooling goes out sodium sulfate again.The sodium sulfate of separating out is made soda ash with the road Blanc, recycles.The sulfuration slag extracts elements such as gold and silver, copper with conventional method.
Transform slag and carry out flotation, sub-elect a mine tailing (lead carbonate) and a sulphur concentrate.The sulphur concentrate yield is 23%, leadedly is lower than 6%, and sulfur-bearing is greater than 35%.The mine tailing productive rate is 77%, and leaded greater than 50%, sulfur-bearing is lower than 3%, and cupric is lower than 0.9%.Gold and silver distribute in mine tailing and sulphur concentrate and respectively account for 50% approximately.The mine tailing low smelting heat, gold and silver, plumbous total yield all reach more than 96%.The sulphur concentrate is handled with roasting-cyanidation technology, and sulphur system sulfuric acid, gold and silver total yield all reach more than 96%.
Example 2: certain lead-base gold is leaded 40.8%, cupric 3.08%, and sulfur-bearing 22.9%, iron content 16.9% contains gold 68.6 gram/tons, argentiferous 476.9 gram/tons.Ore powder be broken to all less than 300 orders/cun
2, carrying out carbonating at 80 grams per liter sodium carbonate solutions and transform, other conversion conditions are: 60 ℃, 6 hours, liquid-solid ratio=6: 1 meters
3/ ton, blowing air, 1200 rev/mins of mixing speed.Plumbous transformation efficiency reaches more than 99%, and copper, gold and silver leaching yield are all less than 1%.
After the conversion, ore pulp carries out transition and washing, and the filtrate major part is returned use, and small portion adds sodium sulphite in addition and is settled out metal ion, and crystallisation by cooling goes out sodium sulfate again.Sodium sulfate is made soda ash with leblanc process, recycles.
Transform slag and dissolve in silicofluoric acid solution, lead carbonate all is dissolved in the silicofluoric acid.The dissolving after-filtration, in the filter residue gold and silver enrichment nearly one times, with conventional roasting-cyanidation technology recovery, the gold and silver total yield can reach more than 96%.Lead exists with fluosilicic lead plumbate form in the filtrate, then adds quantitative sulfuric acid in filtrate, promptly is settled out pure lead sulfate, and silicofluoric acid obtains regeneration simultaneously, can be recycled.The lead sulfate that is settled out changes into Chemicals such as lead sulfate tribasic or yellow lead in sodium hydroxide solution.Lead sulfate tribasic of making or yellow lead quality all reach the first grade standard.
Claims (4)
1, lead-base gold or lead ore carbonating conversion method is characterized in that through levigated lead-base gold or lead ore in sodium carbonate solution, are that oxygenant changes into lead carbonate with air or oxygen-rich air or oxygen under normal pressure and 20～100 ℃.
2, by the method for claim 1, it is characterized in that concentration of sodium carbonate is 10～200 grams per liters in the conversion fluid.
3, by claim 1 or 2 described methods, it is characterized in that concentration of sodium carbonate is the 80-120 grams per liter in the conversion fluid.
4, by the method for claim 1 or 2, it is characterized in that temperature of reaction the best is 50～80 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN89109462A CN1020381C (en) | 1989-12-27 | 1989-12-27 | Conversion treatment of lead-base gold or lead ores with soda |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN89109462A CN1020381C (en) | 1989-12-27 | 1989-12-27 | Conversion treatment of lead-base gold or lead ores with soda |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1052903A CN1052903A (en) | 1991-07-10 |
| CN1020381C true CN1020381C (en) | 1993-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN89109462A Expired - Fee Related CN1020381C (en) | 1989-12-27 | 1989-12-27 | Conversion treatment of lead-base gold or lead ores with soda |
Country Status (1)
| Country | Link |
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| CN (1) | CN1020381C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100400424C (en) * | 2006-03-22 | 2008-07-09 | 湖南大学 | Method of preparing tribasic lead sulphate using lead mud in waste lead battery |
| ITVA20070007A1 (en) * | 2007-01-17 | 2008-07-18 | Millbrook Lead Recycling Techn | RECOVERY OF THE LEAD OF HIGH-PURITY CARBONATE UNIFORM PASTEL RECOVERY FROM THE CRUSHING OF EXHAUSTED LEAD ACCUMULATORS |
| CN102796871B (en) * | 2011-05-27 | 2014-10-01 | 深圳市格林美高新技术股份有限公司 | Method for treating cast of lead anode plate in electro-deposit copper |
| CN102433445A (en) * | 2011-12-11 | 2012-05-02 | 郴州市金贵银业股份有限公司 | Technology for transforming lead silver chlorine salt system into carbonate system |
| CN111118286A (en) * | 2020-01-16 | 2020-05-08 | 尤灵革 | Comprehensive recovery process for copper-lead-zinc bulk concentrates difficult to separate |
| CN115504439B (en) * | 2022-09-07 | 2023-09-29 | 金川集团股份有限公司 | Method for removing lead from high-lead tellurium powder |
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1989
- 1989-12-27 CN CN89109462A patent/CN1020381C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1052903A (en) | 1991-07-10 |
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