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Applied Mathematics and Mechanics (English Edition) ›› 2007, Vol. 28 ›› Issue (3): 327-327 .doi: https://doi.org/10.1007,10483-007-0306-1

• 论文 • 上一篇    下一篇

Simulation of coupled flowing-reaction-deformation with mass transfer in heap leaching processes

吴爱祥1 2;刘金枝2;唐玲艳3   

  1. 1. School of Civil and Environment Engineering,University of Science and Technology Beijing, Beijing 100083, P. R.2. School of Mathematical Sciences and Computing Technology, Central South University, Changsha 410075, Hunan Province, P. R. China;3. Department of Mathematics and System Science,National University of Defense Technology, Changsha 410078, Hunan Province, P. R. China
  • 收稿日期:2006-07-19 修回日期:2006-12-15 出版日期:2007-03-25 发布日期:2007-03-25

Simulation of coupled flowing-reaction-deformation with mass transfer in heap leaching processes

WU Ai-xiang1 2; LIU Jin-zhi2;TANG Ling-yan3   

  1. 吴爱祥1 2;刘金枝2;唐玲艳3
  • Received:2006-07-19 Revised:2006-12-15 Online:2007-03-25 Published:2007-03-25

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摘要： Governing equations for a fully coupled flowing-reaction-deformation behavior with mass transfer in heap leaching are developed. The model equations are solved using an explicit finite difference method under the conditions of invariable application rate and constant hydraulic head. The distribution of the degree of the saturation, as well as the distributions of the concentration of the reagent and the solute is given. A cubic relationship between the mineral recovery and the leaching duration is obtained based on the numerical results. The relationship can be used to predict the recovery percentage of the valuable metal.

关键词: heap leaching, porosity evolution model, saturation degree, mass transfer, numerical solution

Abstract: Governing equations for a fully coupled flowing-reaction-deformation behavior with mass transfer in heap leaching are developed. The model equations are solved using an explicit finite difference method under the conditions of invariable application rate and constant hydraulic head. The distribution of the degree of the saturation, as well as the distributions of the concentration of the reagent and the solute is given. A cubic relationship between the mineral recovery and the leaching duration is obtained based on the numerical results. The relationship can be used to predict the recovery percentage of the valuable metal.

Key words: heap leaching, porosity evolution model, saturation degree, mass transfer, numerical solution

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