A kind of beneficiation system and beneficiation method of sulfide ore

Abstract

The invention relates to a beneficiation system and a beneficiation method of sulfide ore, which belong to the technical field of mineral flotation, and solve the problems of long process flow, high cost and small particle size range of sorted mineral particles in the prior art. The beneficiation system is equipped with a ball mill, a spiral classifier, a mixing tank, coarse particle separation equipment and a flotation machine along the mineral processing pipeline; the coarse particle separation equipment includes the first column, the second column and the gas-water mixing input device. The first cylinder and the second cylinder are both cylindrical structures, the second cylinder is nested outside the upper end of the first cylinder, the upper end surface of the second cylinder is higher than the upper end surface of the first cylinder, and the second cylinder There is an ore discharge port on the side of the body, and the material in the first column can overflow into the second column and be discharged through the ore discharge port; the number of ball mills and flotation machines is multiple. The invention can sort mineral particles in a larger particle size range, shorten the flow process, and improve the recovery rate. The coarse-grained tailings can be directly used as building material sandstone aggregates, thereby improving economic benefits and comprehensive utilization of resources.

Description

technical field [0001] The invention relates to the technical field of mineral flotation, in particular to a beneficiation system and a beneficiation method of sulfide ore. Background technique [0002] With the development of modern industry, the demand for mineral resources has increased sharply; at the same time, due to the gradual depletion of rich ore resources, the dependence on "poor, miscellaneous, and fine" ores is increasing. Due to the problems of fine ore embedded particle size, complex mineral composition, and difficult dissociation of valuable minerals, most of the current mineral processing processes use finer grinding particle size, and the grinding fineness is generally -0.074mm, accounting for more than 90%, or even -0.045mm accounts for more than 90%. Such a small grinding fineness will inevitably lead to problems such as high energy consumption of the grinding machine, serious wear, inconvenient preparation and large maintenance. In addition, the excess...

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Problems solved by technology

Such a small grinding fineness will inevitably lead to problems such as high energy consumption, serious wear, inconvenient preparation and large maintenance of the grinding machine

In addition, the excessive content of fine particles in tailings will also lead to a series of problems such as difficulty in dehydration of tailings, sharp accumulation and difficulty in comprehensive utilization

[0003] Based on the problems of high grinding energy consumption, serious wear, flotation agent consumption, difficulty in dehydration of tailings, and low comprehensive utilization rate in fine particle flotation, some researchers have proposed to use coarser particle size to sort minerals For example, by adding circulation channels and grid plates in the flotation machine tank, the flotation particle size can be increased from the current 0.019-0.15mm to 0.4-0.7mm, but this kind of flotation machine is only suitable for some coarse mineral

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