A method for flotation separation of lead-zinc sulfide ore containing intergrowth

Abstract

The invention discloses a flotation separation method of vulcanized lead zinc minerals containing intergrowths and belongs to the technical field of mineral processing. The method comprises the stepsof conducting enrichment on the vulcanized lead zinc minerals containing the intergrowths through mixed flotation to obtain lead zinc mixed rough concentrates and flotation tailings; and adding a combined gangue inhibitor to the lead zinc mixed rough concentrates to conduct flotation to discharge tailings to obtain lead zinc mixed concentrates with high lead zinc content and with the mineral amount remarkably reduced, conducting fine grinding treatment on the lead zinc mixed concentrates, and conducting flotation separation through the zinc inhibition and lead flotation process to obtain zincconcentrates and lead concentrates. According to the method, the lead zinc minerals in minerals are enriched synchronously through mixed flotation; the lead zinc mixed rough concentrates are subjectedto flotation to discharge the tailings, the lead zinc grade is improved, and the mineral treatment capacity through the fine grinding process is reduced; moreover, monomer separation of the lead zincminerals in the mixed concentrates is realized through fine grinding, zinc inhibition and lead flotation are facilitated, the problem of flotation separation of the vulcanized lead zinc minerals containing the intergrowths is solved, and the comprehensive utilization rate of lead zinc resources is increased.

Description

technical field [0001] The invention relates to a method for flotation and separation of lead-zinc sulfide ore containing intergrowth, belonging to the technical field of mineral processing. Background technique [0002] Lead-zinc metal is widely used in electrical industry, machinery industry, military industry, chemical industry and other fields. Lead-zinc sulfide ore is the main mineral resource for extracting lead-zinc metals. Most of the industrial lead production comes from galena, and the zinc production comes from sphalerite and sphalerite. Both lead and zinc have strong sulfophilicity, and their ore-forming conditions and geochemical behavior are similar, so lead-zinc sulfide deposits are often closely symbiotic in ore deposits. In view of the complex embedded structure and uneven embedded particle size of lead-zinc sulfide ore, multi-stage grinding is usually used to fully dissociate the target minerals in the ore, and then through preferential flotation, mixed fl...

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Problems solved by technology

[0004] The above method can realize the separation of lead and zinc minerals in the ore, but some valuable metals are still lost in the tailings, and the comprehensive recovery of valuable metals cannot be realized. The ore is far from meeting the needs of lead-zinc smelting, so the efficient development and utilization of complex and refractory lead-zinc ores has become an effective way to solve the shortage of lead-zinc resources

There are a large number of lead-zinc sulfide ores containing conjoined organisms in my country, which are associated with precious metals such as gold and silver, and have high comprehensive utilization value. However, due to the limitation of mineral processing technology, lead-zinc sulfide ores containing concomitant organisms cannot be well developed and utilized.

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