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Applied Mathematics and Mechanics (English Edition) ›› 2010, Vol. 31 ›› Issue (12): 1473-1480.doi: https://doi.org/10.1007/s10483-010-1377-7

• Articles •    下一篇

Analysis of coupled flow-reaction with heat transfer in heap bioleaching processes

吴爱祥1 刘金枝1,2 尹升华1 王洪江1   

  1. 1. School of Civil and Environment Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China;
    2. College of Information and Technology, Shanghai Ocean University, Shanghai 201306, P. R. China
  • 收稿日期:2010-03-29 修回日期:2010-09-14 出版日期:2010-12-01 发布日期:2010-12-01

Analysis of coupled flow-reaction with heat transfer in heap bioleaching processes

WU Ai-Xiang1, LIU Jin-zhi1,2, YIN Sheng-Hua1, WANG Hong-Jiang1   

  1. 1. School of Civil and Environment Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China;
    2. College of Information and Technology, Shanghai Ocean University, Shanghai 201306, P. R. China
  • Received:2010-03-29 Revised:2010-09-14 Online:2010-12-01 Published:2010-12-01

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被引次数

11

摘要： A mathematical model for heap bioleaching is developed to analyze heat transfer, oxygen flow, target ion distribution and oxidation leaching rate in the heap. The model equations are solved with Comsol Multiphysics software. Numerical simulation results show the following facts: Concentration of oxygen is relatively high along the boundary of the slope, and low in the center part where leaching rate is slow. Temperature is relatively low along the slope and reaches the highest along the bottom region near the slope, with difference being more than 6?C. Concentration of target mental ions is the highest in the bottom region near the slope. Oxidation leaching rate is relatively large in the bottom and slope part with a fast reaction rate, and small in the other part with low oxygen concentration.

Abstract: A mathematical model for heap bioleaching is developed to analyze heat transfer, oxygen flow, target ion distribution and oxidation leaching rate in the heap. The model equations are solved with Comsol Multiphysics software. Numerical simulation results show the following facts: Concentration of oxygen is relatively high along the boundary of the slope, and low in the center part where leaching rate is slow. Temperature is relatively low along the slope and reaches the highest along the bottom region near the slope, with difference being more than 6?C. Concentration of target mental ions is the highest in the bottom region near the slope. Oxidation leaching rate is relatively large in the bottom and slope part with a fast reaction rate, and small in the other part with low oxygen concentration.

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