Ore-selecting method of difficultly-selected copper zinc sulphur ore
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A mineral processing method, copper-zinc technology, applied in flotation, solid separation, etc., can solve the problems of pollution, non-utilization, high copper-zinc mutual content, etc., and achieve a good effect of mineral processing indicators
Active Publication Date: 2009-11-25
HUNAN RES INST FOR NONFERROUS METALS
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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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[0035] The Qibaoshan copper-zinc-sulfur ore body in Liuyang, Hunan Province is the type of copper-zinc-sulfur ore body. The valuable minerals that can be recovered in the ore are mainly copper, zinc, sulfur and a small amount of lead minerals. Cu in the secondary copper sulfide in the ore is as high as 76.56%; the content of iron sulfide minerals in the ore is 28% to 80%; the particle size of the useful minerals is fine, mostly below 40 microns, and 90% of the monomers between the minerals must be dissociated. The ore needs to be ground to a particle size of 5 microns, and the type of ore is rare at home and abroad.
[0036] The existing beneficiation process is that the grinding fineness is less than 0.074mm, which accounts for 65%. A large amount of lime (≥20 kg / ton) is added to copper-zinc mixed flotation, and a large amount of potassium ferricyanide and lime inhibitor are added to copper-zinc separation flotation. . Current beneficiation indicators: copp...
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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 ...
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