Efficient and energy-saving comminuting process for copper sulfide ore

Abstract

The invention belongs to the technical field of copper ore treatment, and particularly relates to an efficient and energy-saving comminuting process for copper sulfide ore. The efficient and energy-saving comminuting process comprises the following steps: conventional process treatment of three-stage crushing with a single closed circuit stage is conducted on the ore, and thus a crushed product isobtained, wherein the maximum granularity of the crushed product is 15 mm, the content of the grain size less than 6 mm accounts for 50 to 65% of the total quantity of the whole grain size, the content of the grain size less than 3 mm accounts for 30 to 45% of the total quantity of the whole grain size, and the content of the grain size less than 1 mm accounts for 15 to 30% of the total quantityof the whole grain size. According to the efficient and energy-saving comminuting process for the copper sulfide ore, a one-stage high-pressure roller mill ultrafine grinding link is added on the basis of a conventional process of three-stage crushing with the single closed circuit stage, the lamination crushing effect of a high-pressure roller mill is fully utilized, the granularity of the product entering the mill is greatly decreased, the grain composition is optimized, the content of the grain sizes of minus 6 mm, minus 3 mm and minus 1 mm in the products is increased by 20% or above, and'more crushing and less grinding' is achieved.

Description

technical field [0001] The invention relates to the technical field of copper ore treatment, in particular to a high-efficiency and energy-saving crushing and grinding process for copper sulfide ore. Background technique [0002] At present, the crushing and grinding principle process for processing copper sulfide ore is that the raw ore is crushed in two or three stages, and then all enter the ball mill. For example, after the raw copper ore of Dexing Copper Mine is crushed in a conventional three-stage and one-closed circuit, the particle size of the crushed final product is controlled to be less than 15mm, and all of them are sent to a ball mill for multi-stage grinding, classification, and then flotation to recover valuable metal copper. . [0003] Ball milling is a very important part of the beneficiation process. Its purpose is to separate the useful minerals and gangue minerals and provide the particle size composition required by the beneficiation. In the whole ben...

AI Technical Summary

Problems solved by technology

In order to maximize the dissociation of useful copper minerals and silicate gangue minerals, and provide particle sizes that meet the flotation requirements of copper sulfide minerals, the concentrator usually feeds the crushed products into the ball mill and undergoes 2 to 3 stages of grinding and classification , in order to meet the requirements of copper flotation particle size, so that there are problems of large grinding capacity, high grinding energy consumption, and large grinding medium loss, and it is difficult to guarantee the energy consumption and grinding medium loss under the premise of saving energy and grinding medium loss. Copper sulfide minerals meet the particle size requirements of flotation

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