Bioleaching of marmatite flotation concentrate with a moderately thermoacidophilic iron-oxidizing bacterial strain
Bioleaching of marmatite flotation concentrate with a moderately thermoacidophilic iron-oxidizing bacterial strain
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DOI：
10.1016/j.mineng.2005.02.004
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发表时间：
2005-09
影响因子：
4.8
通讯作者：
Shaoyuan Shi;Z. Fang;J. Ni
中科院分区：
文献类型：
--
作者：
Shaoyuan Shi;Z. Fang;J. Ni
对铁闪锌矿浮选精矿进行了中温嗜酸氧化铁细菌(MLY)生物浸出试验研究。实验结果表明，pH、温度、矿浆浓度和矿石粒度对铁闪锌矿的溶解速度有显著影响。与氧化亚铁硫杆菌相比，中等嗜热菌在较高的酸度和温度下对精矿的生物浸出效果更好。中度嗜热菌的适应菌株对铁闪锌矿的氧化比原始菌株和无菌对照更快、更彻底。
Bioleaching of a marmatite flotation concentrate with a moderately thermoacidophilic iron-oxidizing bacterial strain (MLY) was investigated in batch experiments. Experimental results showed that the dissolution rate of marmatite was influenced markedly by pH, temperature, pulp density and particle size of ore. The bioleaching of the concentrate by the moderate thermophile was more effective when carried out under the higher acidity and temperature compared with Acidithiobacillus ferrooxidans. The adapted strain of the moderate thermophile could provide more rapid and complete oxidation of marmatite than its original strain and in the sterile control.