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Bioleaching of Low Grade Tellurium Sulfide Mineral

机译:低级碲硫化物矿物的生物浸出

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The leaching of tellurium from the low-grade sulfide mineral in shake flasks was investigated by using mixed bacteria enriched from the acid mine drainage in Shimian Tellurium Mine in China and Acidithiobacillus ferrooxidans (A.ferrooxidans) isolated from the mixed bacteria, named as W-18 and PD-2, respectively. The results showed that, with inoculation amount of 10 %(volume fraction), temperature of 30°C, initial pH of 1.5, shaking speed of 150 r/min, pulp granularity of <0.165 mm over 85% and pulp density of 2 % (mass fraction), the tellurium extraction efficiency can amount to 76.3 % by using W-18 after 30 days of leaching, while using PD-2 as inocula, the extraction efficiency can only reach 66.3 % after 30 days of leaching with the same leaching parameters exception for initial pH of 2.0. It indicates there may be a bigger potential for bioleaching of the low-grade ore by using the mixed bacteria W-18 than the pure A. ferrooxidans strain PD-2.
机译:通过使用来自中国少年酿酒矿的酸性矿山排水的混合细菌来研究来自低级硫化物矿物的碲浸出烧瓶中的混合细菌,并从混合细菌中分离出来,命名为W-分别为18和PD-2。结果表明,接种量10%(体积分数),温度为30°C,初始pH为1.5,振动速度为150升/分钟,纸浆粒度<0.165mm,超过85%,纸浆密度为2% (质量分数),碲提取效率可以通过W-18在浸出30天后使用W-18的量为76.3%,同时使用PD-2作为接种症,萃取效率随着相同的浸出后30天浸出后才能达到66.3% 2.0初始pH值的参数例外。它表明通过使用与纯A.Forrooxidans菌株PD-2的混合细菌W-18的混合细菌W-18具有更大的生物浸出的巨大潜力。

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