铀矿冶2011，Vol.30Issue(3)：124-129,6.
压力波动法地浸采铀的数值模拟初步研究
Numerical study on in-situ leaching uranium with pressure fluctuation
摘要
Abstract
Recent researches and innovation of in-situ leaching focus on the chemical process, which can not solve the low recovery in"dead leaching zone" and "non-preferential zone" caused by preferential flow and solute transport phenomena in heterogeneous ore deposits. Based on hydrodynamic effects and phenomena in highly heterogeneous porous media, gas injection experiments and laboratory experiment results, an innovative method for in-situ leaching, named as leaching with pressure fluctu-ation, was put forward to enhance the leaching effect and uranium recovery, especially in those uranium ore deposits with high heterogeneity. Based on the characteristics of gas/liquid mixture and flow-reactive-transport theory, a numerical modeling tool is established. By the numerical simulation, the field-scale traditional leaching method and the new method were studied. The simulation results show that the gas-liquid mixture will expand/shrink greatly in different flow zone during the pressure fluctuation process, and the deformation will enhance the solute transport effect among different flow zones, especially in non-preferential flow zone, and enhance the uranium recovery. The primary results show that in-situ leaching with pressure fluctuation is feasible technically.关键词
地浸采铀/非均质/优势流动传质/高压缩性流体/压力波动Key words
in-situ leaching/heterogeneity/preferential flow and solute transport/pressure fluctuation分类
天文与地球科学引用本文复制引用
魏宁,李小春,朱前林,刘乃忠,苏学斌,王晓东..压力波动法地浸采铀的数值模拟初步研究[J].铀矿冶,2011,30(3):124-129,6.基金项目
国家自然科学基金资助项目(40902073) （40902073）
