Flotation machine and flotation column combined gradient extraction method with copper sulphide ore embedded unevenly

Abstract

The invention relates to a flotation machine and flotation column combined gradient extraction method with copper sulphide ore embedded unevenly. The method comprises the following steps that S1, after being crushed, raw ore is added with water to be ground into ore pulp with the proper concentration; S2, the ore pulp is put into a flotation machine to be subjected to roughing to obtain roughing concentrates and roughing tailings; S3, the roughing concentrates are reground; SS4, the reground roughing concentrates are subjected to flotation column concentration to obtain primary concentration concentrates and primary concentration tailings; S5, the primary concentration concentrates are subjected to flotation column concentration to obtain first-step copper concentrates; S6, the primary concentration tailings are subjected to flotation machine concentration three times to obtain second-step copper concentrates; and S7, the roughing tailings are subjected to scavenging to obtain copper tailings. Compared with the prior art, fine-grain copper ore is recycled through a flotation column, the flotation machine is used for carrying out concentration on the tailings obtained after flotation column concentration, and therefore coarse grains which cannot be recycled by the flotation column are effectively recycled by the flotation machine, both coarse grains and fine grains are recycled,the recycling efficiency is greatly improved, and the grade of the copper concentrates is also increased.

Description

technical field [0001] The invention relates to the technical field of ore screening, in particular to a gradient extraction method in which a flotation machine and a flotation column are combined with unevenly embedded copper sulfide ores. Background technique [0002] Copper is a non-ferrous metal that is very closely related to human beings. It is widely used in electrical, light industry, machinery manufacturing, construction industry, national defense industry and other fields. It is second only to aluminum in the consumption of non-ferrous metal materials in my country. It can be seen that the technology of separating and extracting metal copper from copper ore is related to the development of various industries in our country. [0003] Copper ore is an aggregate composed of copper sulfide or oxide and other minerals. According to the ore composition and color, it is divided into several types such as chalcopyrite, chalcocite and bornite. Among them, chalcopyrite is m...

AI Technical Summary

Problems solved by technology

[0005] However, for the first method, since the beneficiation equipment used is a flotation machine, the recovery effect of the flotation machine equipment on fine-grained copper ore particles is not good, so the particle size of most copper ore particles is relatively small In some cases, some fine-grained copper ore enters the copper tailings, resulting in higher grades of copper tailings and lower grades of copper concentrates; and even if the middle ore is returned sequentially, the recovery rate is still low

For the second method, the copper ore particles are roughly selected by a flotation machine to obtain a rough concentrate with a smaller particle size, and then put into a flotation column for concentration after grinding, because the flotation column equipment recovers fine particles Compared with the flotation machine, the copper ore of the copper ore grade has a great advantage, but the recovery effect of the copper ore particles of the coarse grade is not ideal. The beneficiation process in the column selection can not be effectively recovered, resulting in higher copper tailings grade and low recovery rate

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