A kind of pretreatment method of activated carbon for gold production

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...

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