用氧化亚铁硫杆菌浸取某低品位原生硫化矿中Ｃｕ、Ｎｉ时，金属离子对细菌浸矿有明显的催化作用．金属离子（Ａｇ＋，Ｈｇ２＋，Ｃｏ２＋，Ｂｉ３＋）能显著提高细菌浸出Ｃｕ、Ｎｉ的浸出率．对细菌浸Ｃｕ而言，金属离子催化能力排序为：Ａｇ＋Ｃｏ２＋＞Ｂｉ３＋＞Ｈｇ２＋；对浸Ｎｉ，其排序则为：Ｂｉ３＋＞Ａｇ＋＞Ｃｏ２＋＞Ｈｇ２＋．金属离子的浓度、性质及矿石粒度等影响金属离子的催化能力．金属离子的催化作用机理与其性质、矿物结构及细菌氧化作用等因素有关 Leaching of Cu, Ni from a low-grade primary sulphide ore by Thiobacillus ferrooxidans can obviously catalyze the leaching of bacteria. Metal ions (Ag +, Hg2 +, Co2 +, Bi3 +) can significantly improve the leaching rate of Cu and Ni leached by bacteria. For Cu leaching of bacteria, the catalytic activities of metal ions were ranked as follows: Ag + Co2 +> Bi3 +> Hg2 +; For Ni-impregnation, the ordering was Bi3 + Ag + Co2 + Hg2 +. Metal ion concentration, nature and size of ore affect the catalytic ability of metal ions. The catalytic mechanism of metal ions is related to their properties, mineral structure and bacterial oxidation