Journal of Jishou University(Natural Sciences Edition)

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Leaching Kinetics of Bornite in Acid Solution

XU Jiajian,LIU Zhixiong,DAI Dongyang,TANG Liandong,XIANG Yanhong,ZOU Xiaoyong   

  1. (1.College of Chemistry and Chemical Engineering,Jishou University,Jishou  416000,Hunan China;2.College of Physics and Electromechanical Engineering,Jishou University,Jishou 416000,Hunan China;3.Collaborative Innovation Center of Manganese-Zinc-Vanadium Industrial Technology (the 2011 Plan of  Hunan Province),Jishou University,Jishou 416000,Hunan China)
  • Online:2016-03-25 Published:2016-05-11


The leaching of bornite was investigated in the sulfuric acid solution.The effects of different factors including leaching time,reaction temperature,particle size,the liquid-solid ratio,sulfuric acid and sodium sulfate concentration were investigated in details on the copper leaching rate of bornite.The leaching behaviors show that the copper leaching process is controlled by the mixed kinetic shrinking core model affected by both the interface transfer and diffusion through the solid layer.The reaction apparent activation energy was determined to be 33.97 kJ/mol,and the equation of kinetics can be written as:(ln(1-x))/3-1+(1-x)-1/3=kmt.

Key words: Bornite, acid leaching, dissolution kinetics

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