Copper-lead mixed concentrate flotation separation inhibitor and its preparation method and beneficiation method

Abstract

The invention discloses an inhibitor for flotation separation of copper-lead concentrate. The inhibitor comprises the following components in parts by weight: 15-30 parts of phthalic acid and 10-15 parts of thiosalicylic acid, 3 parts of tannin extract -5 servings. The present invention also discloses a preparation method of the inhibitor, the method comprising the following steps: 1) by weight parts, mixing 15-30 parts of phthalic acid and 10-15 parts of thiosalicylic acid with water and stirring until fully Dissolving; 2) Add 3-5 parts of tannin extract to the result of step 1) until the system becomes transparent to obtain the inhibitor. The invention also discloses a method for using the inhibitor to carry out flotation beneficiation of copper-lead concentrate. The inhibitor provided by the invention can efficiently and selectively inhibit lead minerals in pulp, and has basically no effect on the flotation of copper minerals. The ore dressing process is simple, applicable to actual production scale, and has great application prospects.

Description

technical field [0001] The invention belongs to the field of flotation beneficiation of copper and lead, and in particular relates to a copper-lead mixed concentrate flotation separation inhibitor, a preparation method thereof and a beneficiation method. Background technique [0002] Generally speaking, in the beneficiation of copper-lead-zinc polymetallic ore, due to the similar natural buoyancy of copper and lead minerals, a full-mix or partial-mix flotation process is usually used to separate copper and lead minerals into copper-lead mixed concentrate. Therefore, the separation of copper and lead has become a key issue for this type of ore. [0003] At present, the commonly used lead mineral inhibitors for the separation of copper and lead minerals are: water glass, sodium sulfite and cellulose combination agent; activated carbon and sodium sulfide dedrug, sodium dichromate, water glass combination agent; Sodium drug removal, sulfuric acid pulping, combination of sodium ...

AI Technical Summary

Problems solved by technology

However, for ores with high secondary copper sulfide content, galena is difficult to suppress due to the action of a large amount of copper ions.

At the same time, the use of heavy metal chromium-containing agents will cause great harm to the environment

[0006] The sulfite method (including sodium thiosulfate-ferrous sulfate method, sulfite method and sulfite-starch method, etc.) is generally carried out in a weakly acidic medium. This method is corrosive to equipment and workshops, and The operation is not easy to be stable in actual production

[0007] Although a lot of beneficiation research has been carried out on the flotation separation of copper-lead mixed concentrates, the copper and lead minerals have similar buoyancy and the complex distribution of minerals, so the separation of copper-lead mixed concentrates has always been a major issue in the beneficiation field. big problem

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