Carbonaceous gold ore inhibitor and using method thereof

Abstract

The invention discloses a carbonaceous gold ore inhibitor and a using method thereof. The carbonaceous gold ore inhibitor aims at solving the problem that preg-robbing carbon (being mainly of organic carbon) in carbonaceous gold ores adsorbs gold cyanogen complex ions. The carbonaceous gold ore inhibitor comprises the following three materials in percent by mass: 10%-30% of sodium dodecyl benzene sulfonate, 10%-30% of sodium lauryl sulfate and 50%-70% of polyoxyethylene sorbitan laurate. The composite inhibitor is a surface active agent, reduces the adsorption loss of the gold cyanogen complex ions through the adsorption effect on preg-robbing carbon / iron-sulfur-arsenic oxidation bacteria residue bodies and remarkably increases the cyanidation leaching rate of gold. The inhibitor has the advantages of strong adaptability, good water solubility, good dispersion effect, small influence on environments, simple operation and the like. The popularization and application of the composite inhibitor and the using method thereof can remarkably increase the cyanidation recovery rate of gold in the carbonaceous gold ores and increases the comprehensive utilization ratio of resources and the economic income of enterprises.

Description

technical field [0001] The invention relates to the suppression technology of carbonaceous matter in carbonaceous gold ore, in particular to a carbonaceous gold ore inhibitor and its application method. Background technique [0002] Carbonaceous gold ore is one of the important types of gold ore. It is generally believed that when the organic carbon in the ore is above 0.2%, the cyanidation extraction process of gold will be seriously disturbed; therefore, it cannot be treated by conventional cyanidation. In order to solve the difficult problem of cyanidation leaching of carbonaceous gold ore, various pretreatment methods explored and summarized can be divided into two categories: one is to remove or decompose the carbonaceous matter in the ore, and the other is to make the carbonaceous matter lose the gold cyanide Adsorption activity of the complex. At present, the pretreatment methods of carbonaceous gold ore include flotation, high-temperature roasting, chemical oxidatio...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of low cyanidation leaching rate in heap leaching of low-grade carbonaceous gold ore, the present invention provides a carbonaceous gold ore inhibitor and its application method. Before cyanide gold extraction, chemical reagents that are selectively adsorbed and covered on the surface of carbonaceous substances are added to eliminate the influence of carbonaceous substances on the adsorption of gold cyanide complexes in the process of cyanidation gold leaching, and significantly improve the cyanide leaching rate of gold

Images