Composite inhibitor for galena and application method thereof

Abstract

The invention discloses a composite inhibitor for galena and an application method thereof. The composite inhibitor comprises the following raw materials of, in percentage by weight, 10-14% of ferricsulfate, 18-22% of fatty alcohol-polyoxyethylene ether, 13-17% of glycerol, 20-26% of carboxymethyl cellulose, and 26-32% of sodium silicate; the ferric sulfate, the fatty alcohol-polyoxyethylene ether, the glycerol, the carboxymethyl cellulose, and the sodium silicate are separately prepared into a solution with the mass percent concentration of 10% under the normal temperature status, then all the solutions are mixed, and uniformly stirring is carried out to obtain an emulsion so as to obtain the composite inhibitor for later use; and the composite inhibitor is added in the rough flotation process of the galena, the next step is carried out after stirring, and the composite inhibitor is added in the copper scavenging process, the use amount of the composite inhibitor is half of the use amount of the rough flotation, and the next step is carried out after stirring. The composite inhibitor is added in the copper-lead separation process, so that the qualities of copper concentrate and lead concentrate can be remarkably improved, and the flotation recovery rate of copper-lead minerals is improved. The composite inhibitor and the application method thereof has the advantages of beingenvironment-friendly, high in sorting efficiency, low in reagent cost, simple and convenient and the like, and is suitable for beneficiation of complex copper-lead sulfide ores.

Description

technical field [0001] The invention relates to a compound inhibitor of galena and a use method thereof, belonging to the technical field of mineral processing. Background technique [0002] The separation of copper and lead has always been a difficult point in the flotation separation of sulfide ore. Traditional galena inhibitors include dichromate method, cyanide method and heating method. For example, potassium dichromate can inhibit galena well. This is due to the combination of potassium dichromate and oxidized galena. It is caused by the formation of hydrophilic lead chromate on the surface of the ore, while potassium dichromate basically has no effect on the flotation of chalcopyrite. Pollution of the environment; the cyanide method is highly toxic and also seriously pollutes the ecological environment; the heating method is complicated to operate, difficult to control, and difficult to apply; therefore, it is very important to find an environmentally friendly copper...

AI Technical Summary

Problems solved by technology

Traditional galena inhibitors include dichromate method, cyanide method and heating method, such as potassium dichromate can inhibit galena well, this is because potassium dichromate and oxidized galena The surface effect of ore produces hydrophilic lead chromate, and potassium dichromate has basically no effect on the flotation of chalcopyrite. Potassium dichromate has good selectivity for copper and lead separation, but it is highly toxic and serious Pollution of the environment; the cyanide method is highly toxic, and it also pollutes the ecological environment very seriously; the heating method is complicated to operate, difficult to control, and difficult to apply; therefore, it is very important to find an environmentally friendly copper-lead separation inhibitor

[0003] At present, it is difficult to separate complex types of minerals with a single inhibitor, and compound agents are becoming more and more popular

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