Combined agent for pyrite flotation

Abstract

The invention discloses a combined agent for pyrite flotation. The combined agent comprises No.2 oil serving as a foaming agent, and a collecting agent formed by mixing ethyl xanthate and butyl xanthate; and under the conditions that the mass content of iron is 36.7 to 37.4 percent and the mass content of kaolin impurity is 55.6 to 57.3 percent in pyrite, based on 30 to 40 mass percent pyrite pulp, the combined agent contains 1,000 g / t of No.2 oil, 200 to 400 g / t of ethyl xanthate and butyl xanthate mixed in a ratio of 1:1, 100 to 200 g / t of tannic acid, and 200 to 350 g / t of copper sulfate. According to the combined agent for flotation of the pyrite using kaolin as a main impurity, the ore concentrate grade of the pyrite is greatly improved, and the yield of the pyrite is also greatly improved; and meanwhile, the combined agent has the advantages of low equipment corrosion, low adverse effect on the human body and the environment and relatively low cost, and further improves the comprehensive benefit.

Description

Technical field [0001] The invention relates to a mineral flotation agent, in particular to a combined agent for pyrite flotation with kaolin as the main impurity. Background technique [0002] The main useful component of pyrite (also called pyrite) is ferrous sulfide (FeS 2 ), it is not only the main raw material for the production of sulfuric acid, but also the raw material for ironmaking. Since natural pyrite is of low grade and contains many impurities, it must be beneficiated before using it as a raw material-remove as much impurities as possible to obtain FeS with higher purity 2 Concentrate. [0003] At present, the pyrite beneficiation method used in China is mainly the flotation method, and some use the gravity separation method. Among them, the key to beneficiation by flotation is to add flotation reagents to the natural (or after gravity beneficiation) pyrite slurry. The flotation reagents contain foaming agents, collectors and other adjustments. Agent. Generally, pe...

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Problems solved by technology

However, in these regulators, some are highly corrosive to equipment, some have greater harm to human body and environment, and some have higher cost; especially for pyrite with kaolin as the main impurity (the quality of kaolin content of 55.6-57.3%), no matter in terms of the ratio of its main components or the selection of regulators, there is no one that can improve the concentrate grade and recovery rate. combination medicine

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