CN86106293A - A kind of method of from contain golden chloroazotic acid, extracting gold - Google Patents
A kind of method of from contain golden chloroazotic acid, extracting gold Download PDFInfo
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- CN86106293A CN86106293A CN 86106293 CN86106293A CN86106293A CN 86106293 A CN86106293 A CN 86106293A CN 86106293 CN86106293 CN 86106293 CN 86106293 A CN86106293 A CN 86106293A CN 86106293 A CN86106293 A CN 86106293A
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- gold
- containing solution
- throw out
- chloroazotic acid
- solution
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Abstract
The invention provides a kind of simple method of from contain golden chloroazotic acid, extracting gold.Solved in this way and contained golden wang aqueous solution problem of environment pollution caused, this method is removed nitrate ion in gold-containing solution after, add yellow soda ash and adjusting pH value, the intensification afterreaction is isolated the throw out that contains gold trioxide and gold, and the dry and said throw out of smelting obtains gold.This method is mainly used in factory and enterprise and administers pollution.Reclaim Precious Metals-Gold.Solution behind the extraction gold is approaching neutral, free from environmental pollution from contain golden chloroazotic acid in this way, and the extraction yield of gold is 99.9%.
Description
The present invention is a kind of invention of extracting the chemical process of gold from contain golden chloroazotic acid.
At present, from contain golden chloroazotic acid, extract general electroosmose process, ion-exchange substitution method, the oxalate reduction method of adopting of gold both at home and abroad.There is the exhaust emission problem of environment in the solution that extracts from contain golden chloroazotic acid behind the gold with these methods.The method that the present invention proposes is different from current methods.After removing the nitrate ion that contains in the golden wang aqueous solution, add yellow soda ash but adopt, the intensification afterreaction is isolated the throw out that contains gold trioxide and gold, and the throw out smelting that exsiccant is contained gold trioxide and gold obtains gold, and the solution behind the extraction gold discharges free from environmental pollution near neutral.
Because a lot of factories, the requirement of enterprise's production technique must clean and handle the gold surface of some element, device with chloroazotic acid, makes to contain some in the chloroazotic acid and corrode the gold that gets off, if can not extract recovery from contain golden chloroazotic acid, then causes very big waste.Fall as discharge of wastewater if these are contained golden wang aqueous solution, with serious environment pollution, purpose of the present invention is exactly for a kind of pollution that helps administering, a kind of method of extracting gold from contain golden chloroazotic acid that the extraction yield of gold is high are provided.
Another object of the present invention is to utilize industrial lean solution to extract the simple method that reclaims Precious Metals-Gold in order to provide a kind of.
The method of extracting gold from contain golden chloroazotic acid provided by the present invention is: will contain golden chloroazotic acid earlier and be heated to 80～100 ℃, divide and add hydrochloric acid for several times, to remove the nitrate ion that contains in the golden chloroazotic acid, solution temperature is dropped to below 70 ℃, add yellow soda ash and regulator solution pH value optimum range 5.5～8.5.Solution is warmed up to 70～110 ℃ of reactions 0.5 second～10 hours, then this solution is cooled to below 70 ℃, isolate throw out, smelt the gold that obtains purity 99.9% allocating oxygenant after the drying precipitate into.
The method of extracting gold from contain golden chloroazotic acid provided by the present invention is compared with existing method, and it is simple to have technology, and the reaction times is short, and facility investment is few, saves advantages such as the energy.Raw material is that industry contains the useless chloroazotic acid of gold, and economic benefit is big, and the solution behind the extraction gold is approaching neutral, free from environmental pollution from contain golden chloroazotic acid in this way, and the extraction rate reached 99.9% of gold.
Embodiment:
Get 10000 grams and contain golden chloroazotic acid, being warmed up to 100 ℃ divides equally and adds 30% hydrochloric acid 20 gram for four times, behind the no nitrate ion solution temperature is reduced to 20 ℃ in the test solution, stir and slowly add 2400 gram yellow soda ash down, the regulator solution pH value is 7, and solution is warming up to 100 ℃, insulation reaction 5 hours, be cooled to 20 ℃ and left standstill 6 hours, isolate throw out in 80～100 ℃ of dryings.With exsiccant throw out 18 grams, be put into adding 2 gram NaNO in the crucible
3Mix thoroughly and be warmed up to 1400 ℃, 1 hour, take out crucible cools half an hour, obtain gold bullion 11 grams.
Claims (6)
1, a kind of method of extracting gold from contain golden chloroazotic acid, the step that said method comprises has: a. removes the nitrate ion that contains in the golden wang aqueous solution.B. in gold-containing solution, add soluble salt and isolate the throw out that contains gold trioxide and gold.C. the said throw out that contains gold trioxide and gold of dry and smelting obtains gold.Feature of the present invention is: add carbonate and regulator solution pH value in gold-containing solution, with the gold-containing solution afterreaction that heats up, the throw out that contains gold trioxide and gold is isolated in cooling then.
2, method according to claim 1 is characterized in that adding yellow soda ash in gold-containing solution.
3, method according to claim 1 is characterized in that adding gold-containing solution pH value optimum range behind the carbonate 5.5～8.5.
4, method according to claim 1 is characterized in that gold-containing solution is warmed up to optimum temperature range at 70～110 ℃.
5, method according to claim 1 is characterized in that with the reaction times optimum range after the gold-containing solution intensification be 0.5 second～10 hours.
6, method according to claim 1, with gold-containing solution be cooled to isolate below 70 ℃ contain gold trioxide and the gold throw out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86106293 CN86106293A (en) | 1986-09-17 | 1986-09-17 | A kind of method of from contain golden chloroazotic acid, extracting gold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86106293 CN86106293A (en) | 1986-09-17 | 1986-09-17 | A kind of method of from contain golden chloroazotic acid, extracting gold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86106293A true CN86106293A (en) | 1988-05-11 |
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ID=4803140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86106293 Pending CN86106293A (en) | 1986-09-17 | 1986-09-17 | A kind of method of from contain golden chloroazotic acid, extracting gold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86106293A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100424201C (en) * | 2006-03-01 | 2008-10-08 | 张勇 | Method for purifying golden and silver by fast wetting optimization |
| CN110172585A (en) * | 2019-04-29 | 2019-08-27 | 北京理工大学 | A method of extracting golden simple substance from gold-containing scrap |
-
1986
- 1986-09-17 CN CN 86106293 patent/CN86106293A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100424201C (en) * | 2006-03-01 | 2008-10-08 | 张勇 | Method for purifying golden and silver by fast wetting optimization |
| CN110172585A (en) * | 2019-04-29 | 2019-08-27 | 北京理工大学 | A method of extracting golden simple substance from gold-containing scrap |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |