原地溶浸开采中的多过程耦合作用与反应前锋运动:1.理论分析  

MULTIPLE PROCESSES COUPLING AND REACTION FRONT PROPAGATION DURING IN-SITU LEACH MINING:1. THEORETICAL ANALYSES

作　　者：谭凯旋[1] 王清良[1] 胡鄂明[1] 胡凯光[1] 周泉[1] 

机构地区：[1]南华大学建筑工程与资源环境学院,湖南衡阳421001

出　　处：《铀矿冶》2005年第1期14-18,共5页Uranium Mining and Metallurgy

基　　金：国家自然科学基金项目(编号:70171057);湖南省教育厅重点项目(编号:03A042)。

摘　　要：原地溶浸开采受到孔隙介质中的流体流动、矿物溶解、水溶液组分扩散等多过程的耦合作用,其动力学过程可用溶解反应前锋运动来研究。从流体流动、溶解反应与扩散的耦合和反馈作用建立了反应前锋运动的动力学模型,分析了反应前锋的形态稳定性及其主要影响因素。流体流动与溶解反应的正反馈作用可导致复杂的反应前锋形态并对原地溶浸开采有重要影响。In-situ leach mining is controlled by multiple processes coupling such as fluid flow in porous medium, mineral dissolution, aqueous species diffusion. The dynamic process can be studied from the movement of dissolution reaction front. The dynamic model of reaction front propagation is established based on the coupling and feedback among fluid flow, dissolution and diffusion. The morphological stability of reaction front and the main factors that affect the stability are analysed. The positive feedback between fluid flow and dissolution reaction leads to complex reaction front morphologies and has important influence on in-situ leach mining.

关 键 词：原地溶浸开采 耦合 反馈 溶解反应前锋 稳定性 

分 类 号：TD851[矿业工程—金属矿开采]