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Efficient and environment-friendly gold stripping powder and gold recovery process

A golden and environmentally friendly technology, applied in the direction of improving process efficiency, can solve the problems of complex process, large energy consumption, highly toxic cyanide liquid, etc., and achieve the effect of environmental protection of the recovery process, improvement of recovery rate and good quality.

Inactive Publication Date: 2020-08-04
深圳金贝得科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cyanide solution is highly toxic, and it is easy to produce toxic gases and pollutants during the operation, which brings great harm to the operators and the surrounding environment; the aqua regia dissolution method has serious pollution, low recovery rate, low purity, and complicated process; the electrolysis method requires consumption large amount of energy

Method used

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  • Efficient and environment-friendly gold stripping powder and gold recovery process
  • Efficient and environment-friendly gold stripping powder and gold recovery process

Examples

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Comparison scheme
Effect test

Embodiment 1

[0022] This embodiment discloses a high-efficiency and environment-friendly gold removal powder. The gold removal powder is uniformly mixed with 30 g of gold beneficiation agent, 10 g of anti-staining salt S and 1 g of sodium dodecylbenzene sulfonate.

[0023] Among them, the gold beneficiation agent consists of 0.75g sodium carbonate, 0.75g sodium chloride, 0.75g calcium chloride, 0.75g lead nitrate, 3g bismuth nitrate, 3g ammonium nitrate, 3g potassium permanganate, 6g sodium hypochlorite, 6g potassium iodide and 6g Lime sulfur mixture is evenly mixed.

[0024] This embodiment also discloses a gold recovery process, comprising the steps of:

[0025] S1. Configure gold removal solution

[0026] Dissolve 41g of degolding powder in 1000mL of pure water at 45°C, stir evenly, put the metal to be degolded, soak for 4 minutes, remove the gold-plated layer on the metal surface, and form a degolding solution;

[0027] S2. Zinc wire replacement

[0028] Add 1mL of ammonia water and...

Embodiment 2

[0032] This embodiment discloses a high-efficiency and environment-friendly gold removal powder. The gold removal powder is uniformly mixed with 30 g of gold beneficiation agent, 10 g of anti-staining salt S and 1 g of sodium dodecylbenzene sulfonate.

[0033] Among them, the gold beneficiation agent consists of 0.7g sodium carbonate, 0.7g sodium chloride, 0.8g calcium chloride, 0.8g lead nitrate, 3g bismuth nitrate, 3g ammonium nitrate, 3g potassium permanganate, 6g sodium hypochlorite, 6g potassium iodide and 6g Lime sulfur mixture is evenly mixed.

[0034] This embodiment also discloses a gold recovery process, comprising the steps of:

[0035] S1. Configure gold removal solution

[0036] Dissolve 41g of degolding powder in 1000mL of pure water at 60°C, stir evenly, put in the metal to be degolded, soak for 4 minutes, remove the gold-plated layer on the metal surface, and form a degolding solution;

[0037] S2. Zinc wire replacement

[0038] Add 1mL of ammonia water and ...

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PUM

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Abstract

The invention discloses efficient and environment-friendly gold stripping powder and a gold recovery process. The gold stripping powder comprises a gold ore-dressing agent, reserve salt S and a surfactant; and the gold recovery process comprises the steps of gold stripping liquid preparation, zinc wire replacement and zinc removal. The gold stripping powder and the gold recovery process have the characteristics of environmental friendliness and no toxicity; and compared with a traditional gold recovery process, the novel gold recovery process has the beneficial effects that the gold recovery rate and the purity of recovered gold can be remarkably improved.

Description

technical field [0001] The invention relates to the technical field of gold recovery, in particular to a high-efficiency and environment-friendly degold powder and a gold recovery process. Background technique [0002] With the rapid development of society, the replacement speed of electronic products is also gradually accelerating, followed by a large number of waste mobile phones, waste computers and other electronic components, and there will be many waste gold-plated parts in the corresponding waste electronic components. If it is directly scrapped and discarded, it will cause a lot of waste of resources. Due to artificial mining, the gold ore on the earth is gradually depleted, and gold recovery from gold-plated pieces will be an important part of gold production. [0003] The existing conventional methods for recovering gold from waste gold-plated parts include aqua regia dissolution method, cyanide solution oxidation method, electrolysis method, etc. The cyanide sol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B11/00C22B7/00
CPCC22B7/006C22B11/042Y02P10/20
Inventor 冯海江
Owner 深圳金贝得科技发展有限公司
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