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Processing method of powdered carbon in extraction of gold by CIP (carbon-in-pulp) process

A carbon slurry gold extraction and treatment method technology, applied in the direction of improving process efficiency, can solve the problems of reduced gold extraction efficiency, increased cost of gram gold, difficult extraction, etc., to reduce gold grade, save resources, and improve mineral processing recovery rate effect

Inactive Publication Date: 2015-09-23
CHANGCHUN GOLD RES INST
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Problems solved by technology

If the powdered carbon goes into the leaching tank, the powdered carbon is more likely to absorb the noble metal ions in the leaching tank, especially the complex ions of gold, and at the same time the particles are smaller and difficult to be extracted by the carbon sieve. The powdered carbon is discharged into the tailings pond along with the tailings slurry, and The efficiency of gold is reduced, resulting in an increase in the cost of gram gold

Method used

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[0023] Vibrating sieve is used to sieve the activated carbon containing powdered carbon, collect the powdered carbon under the sieve and the carbon sludge in the sedimentation tank, and the large-particle activated carbon can be reused in the carbon slurry process; the powdered carbon obtained by screening is crushed and ground to obtain carbon powder (Powdered charcoal fineness -20 mesh, -20 mesh accounted for mass percentage ≥ 95%); Charcoal powder is added into the rotary ashing furnace, oxygen-enriched combustion, to obtain ash; put the ash into the leaching machine equipped with non-toxic gold leaching agent tank, blowing air and stirring, non-toxic leaching; the precious liquid is obtained through leaching, and the precious liquid is injected into the adsorption column equipped with activated carbon. When the gold ion concentration of the solution flowing out of the adsorption column is lower than 1mg / L, the precious liquid becomes lean The poor liquid is filtered and pur...

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Abstract

The invention discloses a processing method of powdered carbon in extraction of gold by the CIP (carbon-in-pulp) process. The processing method comprises the steps of collecting powdered carbon, grinding powdered carbon, chalking powdered carbon, leaching ash, adsorbing with activated carbon, desorbing with gold-loaded carbon and electrolyzing and smelting gold slurry. The processing method of powdered carbon in extraction of gold by CIP (carbon-in-pulp) process, provided by the invention, reduces the gold-containing grade of tailings, improves the ore dressing recovery percentage, saves resources, reduces the cost and improves the economic benefits.

Description

technical field [0001] The invention relates to a method for treating powdered carbon in a carbon slurry gold extraction process, in particular to a method for treating gold-loaded powder carbon accumulated in a carbon slurry process in the gold industry, that is, a method for extracting precious metals, especially gold, from gold-loaded powder carbon. Background technique [0002] Carbon pulp gold extraction technology is the main modern gold production process. Activated carbon plays the role of carrier in the process of carbon pulp gold extraction process. However, in the process of activated carbon, powder carbon is produced due to stirring and friction. Powdered carbon has the characteristics of developed surface pores, strong adsorption capacity and small particles. If the powdered carbon goes into the leaching tank, the powdered carbon is more likely to absorb the noble metal ions in the leaching tank, especially the complex ions of gold, and at the same time the part...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B11/00C22B3/24
CPCY02P10/20
Inventor 杨明远张微乔瞻朱军章
Owner CHANGCHUN GOLD RES INST
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