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.
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