Comprehensive utilization method of reverse flotation products of calcium and magnesium carbonates in mixed copper ores

A technology of calcium magnesium carbonate and mixed copper ore is applied in the field of beneficiation, which can solve the problems of not being used, the beneficiation method cannot recover copper, the problem of resource beneficiation and smelting has not been broken through, etc. Effect

CN102690959AActive Publication Date: 2012-09-26KUNMING UNIV OF SCI & TECH

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Patent Information

Authority / Receiving Office: CN · China
Current Assignee / Owner: KUNMING UNIV OF SCI & TECH
Publication Date: 2012-09-26

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Abstract

The invention relates to a comprehensive utilization method of reverse flotation products of calcium and magnesium carbonates in mixed copper ores. The comprehensive utilization method comprises the following steps of: against the copper-containing products obtained by performing reverse flotation on the calcium and magnesium carbonates in the mixed copper ores, sequentially pressing to form pellets, calcining in a rotary kiln, grinding the ores and performing ammonia leaching to recover copper in the copper-containing products to obtain copper concentrate, and using the leached residue as ansubstitute for cement for filling ingredients in an underground goaf. According to the method disclosed by the invention, combined copper resources which can not be recovered by flotation, acid leaching and ammonia leaching can be effectively recovered, and the calcium and magnesium carbonates, silicates and aluminosilicates can be simultaneously transformed to the cement substitutes which can beused locally, so that the comprehensive utilization of the resources is realized, the filling cost in the goaf is lowered and the economic benefits are significant.

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Description

technical field

[0001] The invention relates to a method for comprehensively utilizing reverse flotation products of calcium-magnesium carbonate in mixed copper ores, and belongs to the technical field of mineral processing. Background technique

[0002] Copper ore resources mainly include copper sulfide and copper oxide. Copper sulfide ore accounts for 80% and copper oxide ore accounts for 20%. Due to the large amount of copper sulfide ore resources, ore dressing and recovery are relatively easy, so more than 80% of copper currently comes from copper sulfide ore resources. It is very difficult to recover copper oxide ore, and the recovery rate is low. In today's shortage of copper ore resources, the efficient use of copper oxide resources has been put on the agenda, so the recovery of copper oxide ore has also made some progress. However, in copper ore resources, the surface of copper sulfide deposits is oxidized, forming a huge amount of oxygen-sulfur mixed copper ore re...

Claims

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