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中文摘要：
为提高生物浸出Pb／Zn冶炼废渣中有价金属的浸出率，利用正交设计，通过摇瓶实验，研究微生物浸出某Pb／Zn冶炼废渣过程中温度、pH值、废渣浓度及浸出时间等对废渣中Cu，Zn，In，Ga，Pb和Ag等有价金属浸出的影响。结果表明，在pH值为1．5、废渣浓度为5％、温度为65℃的优化浸出条件下生物浸出4d，Pb／Zn冶炼废渣中有价金属Cu，Zn，In和Ga的浸出率分别达到95．5％，93．5％，85．0％和80．2％，而Pb和Ag则主要以硫酸铅、黄钾铁矾类物质或硫化银形式富集在余渣中。
英文摘要：
In this study, the main variables involved in the bioleaching process include temperature, pH, pulp density and leaching time. These variables were studied through a shaking flask experiment by orthogonal design in order to improve the leaching rate of metal values, including Cu, Zn, In, Ga, Pb and Ag, from the Pb/Zn smelting slag. The results show that bioleaching rate of Cu, Zn, In and Ga in the Pb/Zn smelting slag under optimized conditions （pH 1.5, temperature 65 ℃, 5% pulp density and a leaching time of 4 d） is 95.5%, 93.5%, 85.0% and 80.2% respectively. Lead and silver, however, are mostly deposited in the leached residues with the forms of lead sulfate, argentojarosite-type or silver sulfide compounds, respectively.
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