Flotation separation method for high-sulfur copper-zinc ore

Abstract

The invention relates to a flotation separation method for high-sulfur copper-zinc ore, which comprises the steps of (1) grinding crushed high-sulfur copper-zinc raw ore to obtain ore pulp; (2) under the condition that the pH value of the ore pulp is 7-8, adding inhibitors, namely, sodium sulfite and zinc sulfate, a collecting agent, namely, butyl xanthate and a collecting foaming agent, namely, ester-23 for copper roughing, and respectively obtaining copper rough concentrate ore pulp and roughing tailing ore pulp; (3) enabling the copper rough concentrate pulp to be subjected to three-time concentration operation, and obtaining copper concentrate; (4) conducting copper scavenging operation on the roughing tailing pulp twice, and obtaining copper scavenging tailings; (5) sequentially adding lime, copper sulfate, butyl xanthate serving as a collecting agent and 2 # oil into the copper scavenging tailings for zinc roughing, and respectively obtaining zinc rough concentrate ore pulp and zinc roughing tailing ore pulp; (6) carrying out three times of concentration operation on the zinc rough concentrate pulp to obtain zinc concentrate; and (7) conducting zinc scavenging operation on the zinc roughing tailing pulp twice, and obtaining zinc scavenging tailings. Efficient flotation separation of copper and zinc is achieved, and copper flotation return water and zinc flotation return water are recycled.

Description

technical field [0001] The invention relates to the technical field of non-ferrous metal beneficiation, in particular to a flotation separation method for high-sulfur copper-zinc ore. Background technique [0002] The research on the flotation of copper-zinc sulfide ore is a topic that mineral processing workers have paid more attention to in recent years. Since most copper-zinc sulfide ores have the characteristics of low grade, complex symbiosis and fine particle size, the separation of copper and zinc is difficult, and the ore dressing is difficult. Because the flotation separation of copper-zinc ores is relatively difficult, there are various conventional flotation processes at home and abroad, such as priority, mixing, partial priority or mixed flotation, etc. At the same time, in order to fully dissociate copper-zinc minerals, multi-stage mills are used. Mine and zinc inhibitors also use a variety of combined agents, and some also use oxidation, heating and other meth...

AI Technical Summary

Problems solved by technology

In actual production, there are often problems that the zinc content of copper concentrate is too high or the copper content of zinc concentrate exceeds the standard.

In addition, in the actual production of the dressing plant, most of the dressing plants also have some problems in the application of backwater. The tailings backwater is used repeatedly for a long time, and the Cu in the backwater 2+ , Ca 2+ 、Na + The content of metal ions and other metal ions increases year by year, which eventually leads to sticky copper flotation foam, and it is difficult for zinc minerals to be effectively suppressed. The loss in the mine is relatively large, and the sorting index gradually deteriorates, resulting in a serious waste of resources

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