A mineral processing method for recovering fluorite from scheelite heating and beneficiation tailings

Abstract

The invention provides a beneficiation method for recovery of fluorite in white tungsten heating cleaner tailings, relates to the technical field of beneficiation of fluorite floatation, in particular to the technical field of the beneficiation of fluorite floatation recovery in the white tungsten heating cleaner tailings, and successfully solves the problem of difficulty in comprehensive recycling of the fluorite in the white tungsten heating cleaner tailings. According to the method, a process including steps of differential flotation of calcium carbonate and the fluorite floatation is adopted, gangue minerals such as calcium carbonate with good floatability are removed through differential flotation, then the fluorite floatation is performed, the fluorite concentrate containing 91.88% of CaF2 and 34.32% of CaCO can be obtained, and the recovery rate of CaF2 of the fluorite concentrate is 46.07%.

Description

technical field [0001] The invention relates to the technical field of fluorite flotation beneficiation, in particular to a beneficiation method for recovering fluorite from scheelite heating and concentrating tailings. Background technique [0002] For high-calcium carbonate fluorite minerals, it is technically difficult to obtain high-quality fluorite concentrates, because both calcite and fluorite lattices contain the same Ca 2+ , and the physical and chemical properties of the surface of the two minerals are similar, and the behaviors of collectors and inhibitors acting on the surface of the two minerals are also similar, so it is difficult to efficiently separate calcite from fluorite, especially for scheelite heating Fluorite in selected tailings is more difficult. Fluorite is strongly affected by high temperature and a large amount of water glass during the heating and beneficiation process of scheelite, and its buoyancy becomes poor. Moreover, the calcium carbonate ...

AI Technical Summary

Problems solved by technology

[0002] For high-calcium carbonate fluorspar minerals, it is technically difficult to obtain high-quality fluorspar concentrates, because both calcite and fluorspar lattices contain the same Ca 2+ , and the physical and chemical properties of the surface of the two minerals are similar, and the behaviors of collectors and inhibitors acting on the surface of the two minerals are also similar, so it is difficult to efficiently separate calcite from fluorite, especially for scheelite heating Fluorite in selected tailings is more difficult

Fluorite is strongly affected by high temperature and a large amount of water glass during the heating and beneficiation process of scheelite, so the buoyancy becomes poor, and the content of calcium carbonate in the heated and beneficiated tailings is more than 45%, which is a typical high-calcium type fluorite. And the flotation performance of calcium carbonate is obviously better than that of fluorite. The previous method of flotation of fluorite is not effective. At present, there are few cases of successful recovery of fluorite from scheelite heated and selected tailings.

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