Ore leaching bacteria and selectivity organism extraction process of low grade zinc sulfide ore
A technology of biological leaching and zinc sulfide ore, applied in the direction of microorganisms, improvement of process efficiency, methods based on microorganisms, etc., can solve the problems of increased cost, difficult separation process, waste of resources, etc., and achieve high recovery rate, short process flow, low cost effect
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[0020] The new process is applied to a domestic iron-containing low-grade zinc sulfide ore. The metal minerals in the ore are mainly pyrite, followed by limonite and hematite; the zinc-containing minerals are mainly sphalerite (30-40%). The gangue minerals are mainly quartz, hydromica, and a small amount of clay minerals; there are few carbonate minerals.
[0021] (1) Breeding, domestication, and expanded cultivation of exclusive ore-leaching bacteria:
[0022] The bacterium that the present invention adopts is collected from certain mine acid pit water, in 90ml Leathen culture medium, inoculate 10ml pit water sample, cultivate in constant temperature water bath in shaker, control temperature to be 45 ℃ respectively according to different bacterial species, control shaker speed The redox potential (Eh), pH value and cell density in the liquid phase were regularly measured at 160 rpm. Add 3.0mol / LH dropwise to Thiobacillus ferrooxidans in late logarithmic growth 2 SO 4 , kee...
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