A kind of beneficiation process of gold-antimony paragenetic ore

Abstract

The invention relates to an ore dressing technique of gold-antimony paragenetic ores. The ore dressing technique comprises the following steps that the -2 mm raw ores are ground through a ball grinding mill; ore pulp formed after ore grinding is subjected to roughing I, and a foam product scraped in roughing I is subjected to concentration I; foam scraped in concentration I is antimony concentrates, and tailings obtained in concentration I is concentrate tailings I; and tailings obtained in roughing I and the concentrate tailings I obtained in concentration I are mixed and subjected to one time of roughing, three times of concentration and four times of scavenging, and thus mixed concentrates and final tailings are obtained. The ore dressing technique has the beneficial effects that antimony is partially floated preferentially, part of antimonite with good floatability can be floated preferentially, and the antimony concentrates with the high antimony grade and low gold content are floated preferentially; and then a mixed flotation technical process is adopted to enable the antimonite not subjected to monomer separation and gold-bearing ore arsenopyrite to float upwards together, thus the mixed concentrates are obtained, and the comprehensive recovery value of the ores is improved.

Description

technical field [0001] The invention belongs to the technical field of beneficiation, in particular to a beneficiation process of gold-antimony symbiotic ore. Background technique [0002] For ores with symbiotic gold and antimony, if the fire process is used directly to recover antimony, the dispersion loss of gold in the slag is relatively high, and the environmental pollution is serious; And cyanide, making direct cyanide leaching difficult to carry out effectively. Therefore, it is necessary to study the separation and extraction technology of gold-antimony paragenetic ore. [0003] The mineral composition of the ore is relatively simple, and the metal minerals are mainly sulfides, stibnite and arsenopyrite. Non-metallic minerals are quartz and a small amount of calcite, plagioclase, sericite and so on. Stibnite is the main metal mineral in the ore, closely related to the paragenesis of arsenopyrite, and it is distributed in the gaps of gangue or in the fissures of ar...

AI Technical Summary

Problems solved by technology

[0004] The ore contains high arsenic, and the main arsenic-containing mineral is arsenopyrite. As the main carrier mineral of gold, arsenopyrite has a close symbiotic relationship with stibnite. The intercalation relationship between the two is complicated, and it is not easy to dissociate through grinding.

Using the priority flotation process, the arsenic is difficult to be suppressed during the antimony flotation process, and it enters the antimony concentrate, affecting the quality of the antimony concentrate, and also increases the gold content in the antimony concentrate; using the mixed flotation process, the antimony The ore enters the flotation concentrate together with the gold-bearing arsenopyrite and other sulfides, making it difficult to increase the gold and antimony grades in the flotation concentrate

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