Chalcocite-contained coarse-grain disseminated copper sulfide ore step-by-step ore grinding flotation method

Abstract

The invention relates to a chalcocite-contained coarse-grain disseminated copper sulfide ore step-by-step ore grinding flotation method. According to the chalcocite-contained coarse-grain disseminatedcopper sulfide ore step-by-step ore grinding flotation method, raw ores are subjected to ore grinding and then are graded into two kinds of ore pulp, namely, overflow d and setting sand c to form twoloops to be subjected to flash flotation and conventional flotation correspondingly; during one loop of flash flotation, a high-selectivity collecting agent (2) and a foaming agent (3) are added to the setting sand c ore pulp fed into a single-tank flash flotation machine to be subjected to optimized flotation to obtain a copper concentrate product 1 and flash flotation tailings f; the concentrate grade and the recovery rate of the copper concentrate product 1 can be ensured, ore feeding fluctuation of conventional flotation can be reduced, the stability of the preparation process is improved, and valuable minerals in ores can be recovered as early as possible; during the other loop of conventional flotation, calcium oxide (1), a high-collectivity collecting agent (4) and the foaming agent (3) are added to the overflow d ore pulp to be subjected to stirring and conventional flotation to enable valuable metals such as gold, silver and copper in the overflow d to be enriched into copperconcentrate 2h and remove tailings 1. The chalcocite-contained coarse-grain disseminated copper sulfide ore step-by-step ore grinding flotation method has the advantages of being simple in operation,smooth in process, easy to apply industrially, high in recovery rate, low in production cost, good in comprehensive benefit and the like and is particularly suitable for mineral separation of chalcocite-contained coarse-grain disseminated copper sulfide ores.

Description

technical field [0001] The invention relates to a step-by-step grinding and flotation method for chalcocite-containing coarse-grain embedded copper sulfide ore, which is suitable for beneficiation application of chalcocite-containing coarse-grain embedded copper sulfide ore. Background technique [0002] In copper sulfide ore, copper is dominated by copper sulfide minerals, mainly including chalcopyrite, chalcocite, blue chalcocite, bornite and copper blue, etc. Copper sulfide ore is often a variety of minerals symbiotic , not only contains a variety of useful and recyclable copper sulfide minerals, but also contains a large amount of gangue minerals. Therefore, in order to obtain copper concentrates with high purity and directly used for smelting, it is necessary to enrich the copper minerals in the ore. Among them, flotation is a more commonly used method. Through the efforts of mineral processing scientific and technological personnel, the research on flotation technolog...

AI Technical Summary

Problems solved by technology

Through the efforts of mineral processing scientific and technological personnel, the research on flotation technology and flotation reagents has been relatively mature for the flotation of copper sulfide ore. However, for some special copper sulfide ores with high-grade coarse grain embedded distribution, Its copper minerals mainly exist in types of copper sulfide ores such as chalcocite, blue chalcocite and copper blue. Due to the brittle nature of the ore itself, it is easy to dissociate during the crushing process, and due to the difference in specific gravity with gangue In addition, the raw ore contains high copper, so in practice, there are the following problems in the flotation of such high-grade coarse-grained special copper sulfide ore: First, many coarse-grained minerals that have been dissociated from the monomer enter the grit and return to the grinding mill. The ore causes excessive crushing and loss, and the difficulty of flotation recovery is increased; the second is that the flotation time caused by the unreasonable flotation process is insufficient, resulting in serious tailing of useful minerals; the third is that the traditional copper selection process and chemicals cannot solve this type of sulfide Efficient Comprehensive Recovery of Useful Minerals in Copper Ore

None of the technical solutions of the above published publications can solve or be difficult to solve the problems existing in the flotation of special copper sulfide ore with high-grade coarse-grain embedded distribution

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