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Method for extracting gold from cyanide pregnant solution based on ion exchange

A technology of ion exchange and cyanide precious liquid, applied in the direction of improving process efficiency, etc., can solve problems such as complicated technical operation, increased difficulty of smelting process, increased production cost, etc., achieves fast adsorption and exchange speed, reduced purification cost, and water flow The effect of low resistance

Pending Publication Date: 2021-03-05
桂林正翰科技开发有限责任公司
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Problems solved by technology

The zinc replacement method has potential hazards of heavy metal pollution, and the technical operation is complicated; the activated carbon adsorption method will adsorb all impurities such as copper, lead, zinc, iron, calcium salts and organic substances in the cyanide solution without distinction, and there will be loading Gold carbon is mixed with a large amount of heavy metal impurities, which increases the difficulty of the subsequent smelting process and increases the production cost

Method used

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Embodiment Construction

[0011] The present invention will be described in detail below in conjunction with the examples.

[0012] A method for extracting gold from precious cyanide solution based on ion exchange, comprising the steps of: Gold cyanide ion Adsorbed; incinerated Gold cyanide ion The strong base type anion exchange fiber obtains rough gold; Crude gold is purified; Incineration temperature is 800-1340 degrees Celsius; Strong base type anion exchange fiber is made based on polypropylene material, the strong base type anion exchange fiber used in this embodiment The fineness is 4.0 denier, choosing the proper fineness can ensure that the strong base anion exchange fiber has proper strength and can provide greater adsorption capacity. Using the method of the present embodiment, the gold content is 0.3 grams per cubic meter of noble cyanide solution for gold extraction, using 500 grams of strong base anion exchange fiber, a total of 50 cubic meters of noble cyanide solution is processed, and...

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Abstract

The invention belongs to the technical field of gold ore gold extraction, and relates to gold extraction from a cyanide pregnant solution, in particular to a method for extracting gold from the cyanide pregnant solution based on ion exchange. The method comprises the following steps that gold cyanide complex ions in the cyanide pregnant solution are adsorbed by using strong base type anion exchange fibers; the strong base type anion exchange fibers adsorbing the gold cyanide complex ions are incinerated so as to obtain crude gold; purifying is conducted on the crude gold; and the strong base type anion exchange fibers are prepared on the basis of a polypropylene material, and the fineness of the strong base type anion exchange fibers is 1.8-6.0 deniers (dtex). The gold extraction method ishigh in production efficiency, and economic benefits and environmental benefits are improved compared with the prior art.

Description

technical field [0001] The invention belongs to the technical field of gold extraction from gold mines, and relates to gold extraction from cyanide precious solution, in particular to a method for extracting gold from cyanide precious solution based on ion exchange. Background technique [0002] At present, the production of gold from gold ore usually goes through processes such as crushing, ore grinding, and ore pulping, and the gold-containing cyanide precious liquid is produced by the cyanidation method, and then gold is extracted from the precious liquid pool. The existing zinc replacement method and activated carbon adsorption method extract gold. The zinc replacement method has potential hazards of heavy metal pollution, and the technical operation is complicated; the activated carbon adsorption method will adsorb all impurities such as copper, lead, zinc, iron, calcium salts and organic substances in the cyanide solution without distinction, and there will be loading ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/42C22B11/08
CPCC22B3/42C22B11/04C22B11/08Y02P10/20
Inventor 曾庆轩何星存郑斌李运稳周定怀
Owner 桂林正翰科技开发有限责任公司
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