黄铜矿足我国主要的铜矿资源,采用中等高温菌是解决黄铜矿牛物浸出速度慢、浸出率低,实现其生物浸出工业化的关键技术.本文通过富集技术获得一种50℃条件下的中等高温混合菌,通过分子生态学技术解析群落组成,并在摇瓶中研究了该混合菌浸出黄铜矿的影响因素.结果表明,该混合菌群落主要组成为Acidithiobacillus caldus 和Ferroplasma属古菌.混合高岛温菌在45和50 ℃浸矿效果较好,在2%的矿浆浓度下,经过10天的浸出,浸出率分别达到75.4%和78.6%;在初始pH 1.25-2.0,混合高温菌对黄铜矿的浸出可以获得较高的浸出率,8天浸出率均大于70%.混合高温菌对低矿浆浓度(2%-3%)的黄铜矿的浸出效果较好,随着矿浆浓度的升高,对黄铜矿的浸出能力也逐渐降低.
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