堆浸工艺中流动-反应-变形-传质耦合过程数值模拟及应用  

Simulation of Coupled Flowing-Reaction-Deformation With Mass Transfer in Heap Leaching Processes

作　　者：吴爱祥[1] 刘金枝[2] 唐玲艳[3] 郭兴明 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083 [2]中南大学数学科学与计算技术学院,长沙410075 [3]国防科技大学数学与系统科学系,长沙410078

出　　处：《应用数学和力学》2007年第3期297-304,共8页Applied Mathematics and Mechanics

基　　金：国家(重点)基础研究发展规划资助项目(2004CB619206);国家杰出青年基金资助项目(50325415);国家创新群体基金资助项目(50321402);湖南省自然科学基金资助项目(06JJ30024)

摘　　要：基于堆浸过程中的孔隙变形,发展了一孔隙发育模型,并建立了堆浸工艺中流动-反应-变形-传质全耦合模型控制方程组,在喷淋强度不变和常水头的的情况下,给出了方程的数值解.数值结果描述了浸出过程矿堆中溶浸液饱和度的分布、溶浸剂浓度和浸出矿石浓度的分布,拟合结果表明:有用矿物浸出百分比与浸出时间之间呈3次关系,这一关系可用来预测堆浸中的有用金属的浸出回收率.Governing equations for a fully coupled Flowing-Reaction-Deformation behavior with Mass Transfer in heap leaching process were developed. These equations were solved using an explicit finite different method under the conditions of invarable application rate and constant hydraulic head. The distributions of the degree of the saturation as well as the distributions of the concentration of the reagent and the solute was 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：堆浸 孔隙发育 饱和度 传质 数值解 

分 类 号：TD953[矿业工程—选矿]