Ore-selecting method of difficultly-selected copper zinc sulphur ore

Abstract

The invention discloses an ore-selecting method of difficultly-selected copper zinc sulphur ore applied to ultra-fine grain embedded high-sulphur ore with high secondary copper content, including: performing floatation to the intermediate products of copper-zinc mixed rough concentration, copper rough concentration, floating copper zinc-restricting slot flotation products, and grinding ores in segments; properly adding combined inhibitor; adding different combined inhibitors during flotation to effectively separate copper zinc ore, thereby acquiring high-quality copper and zinc concentrate products. This invention is in no need of adding cyanide poisonous medicament, such as potassuim cyanide so as to reduce environment pollution, achieves effective and synthesized recycling and utilization of difficultly-selected ore, enhances utilization rate of resource, improves production index by 17.37% in comparison with that of copper concentrate tenor, reduces zinc content by 5.12%-18.12%, improves zinc concentrate tenor by 6.51%, reduces Cu content by 4.44%, respectively enhances recovery rate of copper/zinc concentrate by more than 10%, and realizes excellent ore selecting index as well.

Description

technical field [0001] The invention relates to a beneficiation method of refractory copper-zinc-sulfur ore, in particular to a beneficiation method of copper-zinc-sulfur complex refractory ore in which superfine particles are embedded with high-sulfur and high-secondary copper components. Background technique [0002] A high-sulfur copper-zinc mine, produced in skarn-type, hydrothermal-type or hydrothermal-filled metasomatized deposits, with complex mineral composition. The main useful minerals contained in it are chalcocite, chalcopyrite, copper blue, bornite, tetrahedrite, iron sphalerite, sphalerite, smithsonite, galena, white leadite, pyrite ore, pyrrhotite; gangue to calcite, sericite, fluorite, kaolin, dolomite, chlorite, etc. or garnet, diopside, serpentine, etc. [0003] The structure of this type of ore body is relatively complex, generally including disseminated type and dense massive type. Copper, zinc and pyrite are often densely symbiotic, embedded with each ...

AI Technical Summary

Problems solved by technology

The existing mineral processing process is that the grinding fineness is less than 0.074mm, accounting for 65%. A large amount of lime (≥20 kg/ton) is added to suppress iron sulfide minerals during copper-zinc mixed flotation; a large amount of iron potassium hydride is added to copper-zinc separation flotation , Lime inhibitor, current beneficiation indicators: copper concentrate contains 8% Cu, Zn 15-28%, recovery rate 50%;

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