中华医学超声杂志

应用化学 ›› 1997, Vol. 0 ›› Issue (5): 55-58.

• 研究论文 • 上一篇    下一篇

金属离子在细菌浸取金属硫化矿中的催化作用

汪模辉, 谭龙华, 王俊, 缪辉, 陈昌荣   

  1. 成都理工学院应用化学系, 成都 610059
  • 收稿日期:1996-12-20 修回日期:1997-06-19 出版日期:1997-10-10 发布日期:1997-10-10

Catalysis of Metal Ions in Bacterial Leaching of Metal Sulphide Minerals

Wang Mohui, Tang Longhua, Wang Jun, Miao Hui, Cheng Changrong   

  1. Department of Applied Chemistry, Chengdu University of Technology, Chengdu 610059
  • Received:1996-12-20 Revised:1997-06-19 Published:1997-10-10 Online:1997-10-10

PDF

446

被引次数

6

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+)能显着提高细菌浸出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

关键词: 硫化矿, 细菌浸取, 铜, 镍, 金属离子, 催化作用

Abstract: 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.

Key words: sulphide mineral, bacterial leaching, copper, nickel, metal ion, catalytical effect

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