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Pretreatment method of activated carbon for gold production

An activated carbon and pretreatment technology, applied in chemical instruments and methods, non-metallic elements, inorganic chemistry, etc., can solve the problems of high loss rate of activated carbon, unreasonable, increased production cost, etc., and achieve good wear resistance and wear rate. Low, smooth surface effect

Active Publication Date: 2017-03-22
CHANGCHUN GOLD RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most domestic carbon-pulp gold production enterprises directly put the purchased activated carbon into production and use. The light components in activated carbon are easy to wear, and the powdered carbon formed by abrasion has high activity and fast adsorption rate, but the powdered carbon cannot be effectively recovered, resulting in gold production. loss of
Before using activated carbon in some carbon-pulp method gold production enterprises, they carry out mechanical agitation and grinding pretreatment in the stirring tank with water as the medium, which reduces the loss of activated carbon in the subsequent carbon-pulp method gold recovery process to a certain extent, but due to the pretreatment The unreasonable control of the treatment process leads to the unsatisfactory effect of activated carbon pretreatment, and the loss rate of activated carbon is seriously high, which greatly increases the production cost of the enterprise

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Include the following steps:

[0015] ⑴. The ore processed by the carbon-pulp gold extraction method is used to prepare ore pulp corresponding to the fineness and mass concentration of industrial production. The ore fineness -74μm accounts for 90% and the mass concentration is 50%;

[0016] (2) Dry sieve the activated carbon with sieves with sieves of 3.35mm and 1.0mm respectively, sieve out the large-grained carbon and fine-grained carbon, and keep the activated carbon larger than 1.0mm and smaller than 3.35mm;

[0017] (3) Mix the activated carbon treated in step (2) with the slurry prepared in step (1) at a ratio of 1:5 for the mass ratio of activated carbon to water in the slurry, and mix the activated carbon in an effective volume of 0.05m 3 Mechanical agitation and grinding pretreatment in the stirring tank for 3 hours, the specifications of the stirring tank: tank height 500mm, tank diameter 450mm, four-blade paddle impeller, impeller diameter 180mm, impeller max...

Embodiment 2

[0021] Include the following steps:

[0022] ⑴. The ore processed by the carbon-pulp gold extraction method is used to prepare ore pulp corresponding to the fineness and mass concentration of industrial production. The ore fineness -74μm accounts for 80% and the mass concentration is 40%;

[0023] (2) Dry sieve the activated carbon with sieves with sieves of 3.35mm and 1.0mm respectively, sieve out the large-grained carbon and fine-grained carbon, and keep the activated carbon larger than 1.0mm and smaller than 3.35mm;

[0024] (3) Mix the activated carbon treated in step (2) with the pulp prepared in step (1) at a ratio of 1:4 to the mass ratio of water in the activated carbon to the pulp, and mix them in an effective volume of 0.05m 3 Mechanical agitation and grinding pretreatment in the stirring tank for 2 hours, the specifications of the stirring tank: tank height 500mm, tank diameter 450mm, four-blade paddle impeller, impeller diameter 180mm, impeller maximum speed 580r / m...

Embodiment 3

[0028] Include the following steps:

[0029] ⑴. The ore processed by the carbon-pulp gold extraction method is used to prepare ore pulp corresponding to the fineness and mass concentration of industrial production. The ore fineness -74μm accounts for 70% and the mass concentration is 30%;

[0030] (2) Dry sieve the activated carbon with sieves with sieves of 3.35mm and 1.0mm respectively, sieve out the large-grained carbon and fine-grained carbon, and keep the activated carbon larger than 1.0mm and smaller than 3.35mm;

[0031] (3) Mix the activated carbon treated in step (2) with the slurry prepared in step (1) at a ratio of 1:3 to the mass ratio of water in the activated carbon to the slurry, and mix them in an effective volume of 0.05m 3 Mechanical agitation and grinding pretreatment in the stirring tank for 1 hour, the specifications of the stirring tank: tank height 500mm, tank diameter 450mm, four-blade paddle impeller, impeller diameter 180mm, impeller maximum speed 580...

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Abstract

The invention relates to a pretreatment method of activated carbon for gold production, belonging to the field of mineral processing. The method comprises the following steps: preparing ore slurry with the corresponding fineness and mass concentration to the industrial production from ores treated by a carbon-slurry gold extraction process, maintaining activated carbon of which the particle size is greater than 1.0mm and less than 3.35mm, mixing the activated carbon and ore slurry (the mass ratio of the activated carbon to water in the ore slurry is 1:3-1:5), carrying out mechanical stirring and sanding pretreatment for 1-3 hours, screening out fine-particle carbon with the particle size of less than 1.0mm to maintain the activated carbon with the particle size of greater than 1.0mm, washing, filtering out water, and drying. The activated carbon obtained by the activated carbon pretreatment method disclosed by the invention has the advantages of smooth surface and favorable wear resistance, and has lower wear rate of carbon when being used in the carbon-slurry gold extraction process.

Description

technical field [0001] The invention belongs to the technical field of mineral processing and relates to a pretreatment method of activated carbon for gold production. Background technique [0002] Activated carbon is an important production material in the carbon slurry gold extraction process in the gold industry. Wear resistance is an important indicator that should be considered when selecting activated carbon, which is related to the recovery status of gold and production costs. [0003] At present, most domestic carbon-pulp gold production enterprises directly put the purchased activated carbon into production and use. The light components in activated carbon are easy to wear, and the powdered carbon formed by abrasion has high activity and fast adsorption rate, but the powdered carbon cannot be effectively recovered, resulting in gold production. loss. Before using activated carbon in some carbon-pulp method gold production enterprises, they carry out mechanical agit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/354B01J20/30B01J20/20
CPCB01J20/20B01J20/3021C01P2004/60
Inventor 王怀郑晔郝福来王艳荣
Owner CHANGCHUN GOLD RES INST
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