摘要
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。
The catalysis of metal ions has been studied in bacterial leaching with Thiobacillus ferrooxidans in extraction of copper and nickel from complex low grade Cu and Ni sulphide minerals. Some metal ions (Ag+, Hg2+, Co2+, Bi3+) promote the leaching rate significantly. The order of the catalytical ability of metal ions studied in leaching copper was: Ag+Co2+>Bi3+>Hg2+ and in leaching nikel was: Bi3+>Ag+>Co2+>Hg2+. The property and concentration of metal ions, and the size of the minerals showed influences on the catalytical ability of metal ions.
出处
《应用化学》
CAS
CSCD
北大核心
1997年第5期55-58,共4页
Chinese Journal of Applied Chemistry
关键词
硫化矿
细菌浸取
铜
镍
金属离子
催化
细菌采矿
sulphide mineral,bacterial leaching,copper,nickel,metal ion,catalytical effect
