Beneficiation method for fine-grained disseminated copper ore in plateau area

Abstract

The invention relates to a beneficiation method for fine-grained disseminated copper ore in a plateau area. The method comprises the following steps: performing semi-autogenous grinding chemical adding and ore grinding, chemical adding and pulp mixing in a slurry pump pool, ore pulp grading and an ore grinding grading system for grinding ore in a ball mill, and obtaining copper concentrate I through one-time roughing, three-time scavenging and one-time optimal flotation concentration, and enabling optimal flotation tailings to be subjected to regrinding grading, copper-sulfur separation and separation and concentration to obtain second copper concentrate, conducting separation and scavenging, and returning separation and scavenging tailings for roughing. According to the method, a flotation reagent adding point is optimized, a novel copper mineral collecting agent is developed, the flotation technological process is optimized, operability is good, the grade of the copper concentrate can be improved, the metal recovery rate of copper and associated element gold and silver in the copper concentrate is increased, the copper concentration operation capacity is greatly released, the mine production and operation benefits are increased, reference is provided for development of mines of the same type, and the beneficiation method is particularly suitable for processing skarn type copper ore with embedded fine particles in the plateau area.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a mineral processing method for fine-grained embedded copper ore in plateau areas. Background technique [0002] Copper metal has long been the basic resource for global economic and social development. my country is a country with high consumption of copper metal and is highly dependent on foreign copper resources. Copper metal occurs in the form of copper sulfide ore, copper oxide ore and sulfur-oxygen mixed copper ore. Copper sulfide minerals have good floatability and are often recovered by flotation. High-precision flotation separation of sulfide minerals is difficult. The recovery of oxidized ore has two methods: "sulfurization-conventional flotation" or wet leaching. The appropriate process is selected depending on the type of oxidized mineral. It is often difficult to obtain a high recovery rate by flotation for high-oxide copper ore. The copper process is th...

AI Technical Summary

Problems solved by technology

In addition, copper sulfide minerals and pyrites have similar buoyancy, and xanthate collectors have poor selectivity and are difficult to recover by gradient separation. Therefore, it is necessary to develop green and clean high-selectivity collectors to improve the secondary The difference in hydrophobicity will improve the quality of concentrate products

Images