Flotation separation method for refractory sulfide ore and high-sulfur copper-zinc ore

Abstract

The invention discloses a flotation separation method for refractory sulfide ore and high-sulfur copper-zinc ore. The method comprises the following steps: performing first-stage ore grinding on a raw ore and then performing first-stage flotation on the raw ore, wherein the raw ore after being subjected to the first-stage ore grinding meets the demand that more than 90% of ore fineness is less than 200 meshes; adopting the processes of once rough flotation, once fine flotation and once scavenging; performing second-stage ore grinding on the ore after being subjected to the first-stage flotation, wherein tailings of the first-stage flotation are sulfur concentrates; performing second-stage flotation on the ore which is subject to the second-stage ore grinding and meets the demand that more than 90% of ore fineness is less than 400 meshes; performing copper-zinc separation flotation; adopting the processes of once rough flotation, triple fine flotation and once scavenging; adding C6MT sodium phosphate as a modifier and separating copper concentrates from the tailings; performing third-stage flotation on the tailings; and adopting the processes of once rough flotation, triple fine flotation and twice scavenging, thereby separating zinc concentrates from the sulfur concentrates. The method provided by the invention has the advantages of reasonable process, saved investment and low cost. By using the method, the flotation precision of copper-zinc ore is increased, the recovery rate of copper and zinc concentrates is increased, the national mine resource is furthest recovered, utilized and protected, and the national technical level of separating copper-zinc ore is promoted.

Description

technical field [0001] The invention relates to a method for flotation separation of refractory sulfide ore, high-sulfur copper-zinc ore. Background technique [0002] In recent years, the demand for non-ferrous metals in the international market is increasing, and the average annual increase rate of copper sales is 3-5%. my country is a big importer of copper. With the continuous development of the economy, the domestic demand for copper is increasing by more than 5% year by year. Compared with the same period last year, the market price of electrolytic copper alone has increased by 40%, and the prices of copper and zinc will continue to rise this year. According to the statistics of the Ministry of Land and Resources, as of 2015, there are only 6 kinds of metal resources that can be guaranteed to be mined. Copper, zinc, and sulfur have been relatively scarce resources in my country for a long period of time. [0003] With the increasing consumption of copper and zinc pr...

AI Technical Summary

Problems solved by technology

[0014] Therefore, developing a new copper-zinc separation flotation method for copper-zinc separation can effectively solve the problem of low zinc recovery in copper-zinc separation, obtain a higher comprehensive recovery index of copper-zinc concentrate, and at the same time tailings Used in acid production and cement production to achieve tailings-free production

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