A method for differential flotation separation of partially activated sphalerite-activated complex copper-lead-zinc sulfide ores

Abstract

The invention discloses a partial zinc blende activated complex copper-lead-zinc sulfide ore differential flotation separation method. The method comprises the steps that by adding a flotation rate regulator and a pH regulator, the flotation rate of copper pyrites and non-activated zinc blende is lowered, the activated zinc blende flotation rate is increased, and bulk concentrate adopting the activated zinc blende as the main component is obtained through differential flotation; on the basis of the flotation rate regulator and the pH regulator, the flotation rate difference between the copperpyrites and the non-activated zinc blende is increased, high-grade copper concentrate is obtained through flotation separation preferentially, and zinc blende and a small amount of galena can continueto be recycled in nonfloat. The method achieves mineral individuation and differential flotation separation, high-grade copper concentrate can be obtained, meanwhile, the comprehensive recycling rateof copper zinc in sample ore is increased, the flow technology is easy to implement, the economic benefits are remarkable, and comprehensive recycling of hard-dressing complex copper-lead-zinc sulfide ore resources is effectively achieved.

Description

technical field [0001] The invention relates to a beneficiation method for activating complex copper-lead-zinc sulfide ore by part of sphalerite, in particular to a method for separating chalcopyrite and sphalerite through differential flotation, which belongs to the field of mineral beneficiation. Background technique [0002] The separation of complex polymetallic sulfide ores of copper, lead and zinc has always been one of the most difficult topics in mineral processing. The main reason for this phenomenon is that copper-lead-zinc polymetallic sulfide ores have many mineral components, diverse structures, complex mineral embedding characteristics, and obvious characteristics such as encapsulation and metasomatism. Often useful minerals are densely symbiotic, and the embedding particle sizes are different. A greater degree of oxidation leads to muddying. Copper-lead-zinc and other polymetallic sulfide ores contain some secondary copper minerals, and at the same time, Cu i...

AI Technical Summary

Problems solved by technology

Mixed flotation, that is, flotation of copper, lead and zinc as a whole, and then sequentially separate copper, lead and zinc. This process is suitable for sulfide ores with low total content of sulfide minerals; Mineral flotation, this process is suitable for primary sulfide ore with high grade and coarse particle size, the process is stable and reliable, and the index is stable, it is the mainstream process in China at present; partial mixed flotation, that is, the copper and lead minerals are firstly treated as a whole After flotation, copper and lead are separated, copper and lead tailings are floated and then zinc is floated. This process combines the advantages of mixed flotation and priority flotation, and has been widely used at home and abroad; Various sulfide minerals with similar properties are floated together to obtain different mixed concentrates, and then separated by flotation sequentially, but the operation of this process is long and the process is not easy to control

Due to the "strong tension and pressure" on minerals, these processes generally have problems such as low copper grade, high lead-zinc mutual content, low copper-lead-zinc recovery rate, large dosage of chemicals, and serious equipment corrosion.

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