CN1243890A - Process for extracting golf from waste gold-plating liquid - Google Patents
Process for extracting golf from waste gold-plating liquid Download PDFInfo
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- CN1243890A CN1243890A CN 98112579 CN98112579A CN1243890A CN 1243890 A CN1243890 A CN 1243890A CN 98112579 CN98112579 CN 98112579 CN 98112579 A CN98112579 A CN 98112579A CN 1243890 A CN1243890 A CN 1243890A
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- gold
- waste liquid
- described method
- electroplating effluent
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Abstract
A process for extracting gold from the waste gold-plating liquid includes such technological steps as adding red ketone salt and sulfuric acid to the waste liquid, depositing, taking the deposited matter, sequentially mixing with limestone (or sodium hydroxide), zinc powder and borax, calcining, cooling, taking bottom layer, and blowing out dregs to obtain gold ingot. Its advantages are simple process, low cost, no pollution and high recovery rate.
Description
The present invention relates to a kind of gold extraction method, especially the extracting process from the gold electroplating effluent.The invention belongs to precious metal recovery technology field.
At present, the method for extraction gold mainly contains cylinder iron the method that pot boils dry waste liquid from gold-plated waste liquid, and in waste liquid, add zinc powder or replace the method for accumulation with the zinc silk, the method for leading accumulation, mainly there is contaminate environment in these, the defective that the health risk and the rate of recovery are low.Chinese patent has been announced the patent No. 95110534 " method that a kind of recovery extracts gold from " technology, be with chemicals formulated move back golden liquid and gold complexing at high temperature after, redilution, electrolysis again is deposited on the stainless steel cathode plate gold, scrape again get, clean, dry and obtain gold, though non-environmental-pollution, the rate of recovery is also higher relatively, but the technology relative complex, cost is also corresponding higher.
The inventive method is to provide a kind of technology simpler, and cost is cheaper, and is pollution-free, the novel method that from gold plating waste liquid, extracts gold of high-recovery, present method is for the thick gold of plating, and plating approaches the gold electroplating effluent of gold, no matter it is an alkalescence, and neutral and acidity all can adapt to.
Technical scheme and the requirement of implementing present method are: necessary container made of plastic or cement splendid attire gold electroplating effluent, sample examination from waste liquid, accurately grasp alloy amount and pH value in the gold electroplate liquid, implement following extraction process again: in the gold electroplate liquid, add and the red ketone salt of theoretical alloy amount equivalent → slowly add sulfuric acid, fully stir (stirring tool is a nonmetal parts) to waste liquid bubbling → left standstill two hours, treat the wherein abundant post precipitation of throw out, take out whole throw outs → throw out is inserted the smelting furnace roasting, add Wingdale (or caustic soda) during roasting in succession, zinc powder, borax, fully stir, roasting time is 12 hours, cools off → takes bottom → with ash blowing method then and remove slag and obtain Jin Dian.
Claims (4)
1, the gold extraction method in place's gold electroplating effluent, it is characterized in that: gold plating waste liquid is placed plastic container or cement pit, in the gold electroplating effluent, add red ketone salt, slowly add sulfuric acid again, be stirred well to the waste liquid bubbling, leave standstill and make wherein that throw out fully precipitates, taking out throw out adds Wingdale (or caustic soda), zinc powder, borax in succession and fully stirs roasting, bottom is taken in cooling then, removes slag with ash blowing method.
2, by the described method of claim 1, it is characterized in that theoretical Gold Content equivalent in the red ketone salt of adding and the gold electroplating effluent.
3, by the described method of claim 1, it is characterized in that the time that staticly settles thing is 2 hours.
4, by the described method of claim 1, it is characterized in that sedimentary roasting time is 12 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98112579 CN1243890A (en) | 1998-08-04 | 1998-08-04 | Process for extracting golf from waste gold-plating liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98112579 CN1243890A (en) | 1998-08-04 | 1998-08-04 | Process for extracting golf from waste gold-plating liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1243890A true CN1243890A (en) | 2000-02-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98112579 Pending CN1243890A (en) | 1998-08-04 | 1998-08-04 | Process for extracting golf from waste gold-plating liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1243890A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102021605A (en) * | 2010-12-27 | 2011-04-20 | 株洲科能新材料有限责任公司 | Purification and regeneration method of indium electrolysis waste liquid |
| CN106702158A (en) * | 2015-07-13 | 2017-05-24 | 灵宝欣宏金属科技有限公司 | Regenerating method for waste generated by manufacturing gold potassium citrate and/or potassium dicyanoaurate through electrolysis method |
-
1998
- 1998-08-04 CN CN 98112579 patent/CN1243890A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102021605A (en) * | 2010-12-27 | 2011-04-20 | 株洲科能新材料有限责任公司 | Purification and regeneration method of indium electrolysis waste liquid |
| CN106702158A (en) * | 2015-07-13 | 2017-05-24 | 灵宝欣宏金属科技有限公司 | Regenerating method for waste generated by manufacturing gold potassium citrate and/or potassium dicyanoaurate through electrolysis method |
| CN106702158B (en) * | 2015-07-13 | 2019-01-01 | 灵宝欣宏金属科技有限公司 | Electrolysis method manufactures the regeneration method of waste produced by citric acid gold potassium and/or gold potassium cyanide |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |