离子型稀土矿原地溶浸溶浸液渗流规律的影响因素  

Influential factors of permeability rule of leaching solution in ion-absorbed rare earth deposits with in-situ leaching

作　　者：吴爱祥[1] 尹升华[1] 李建锋[1] 

机构地区：[1]中南大学资源与安全工程学院,湖南长沙410083

出　　处：《中南大学学报（自然科学版）》2005年第3期506-510,共5页Journal of Central South University:Science and Technology

基　　金：国家杰出青年基金资助项目(50325145);国家创新群体科学基金资助项目(50321402)

摘　　要：根据离子型稀土矿具有黏土矿物性质,矿物颗粒表面结合水对溶浸液具有粘滞和吸收作用,并能缩小孔隙体积的特点,探讨了矿物颗粒表面结合水的形成机理及其对溶浸液渗流规律的影响。研究结果表明离子型稀土矿具有B型颗粒结构特征,松散矿物颗粒在满足起动临界水力梯度和颗粒几何尺寸的条件下阻塞孔隙;表面结合水和松散颗粒是影响原地溶浸离子型稀土矿溶浸液渗流规律的2个主要因素。According to the fact that ion-absorbed rare earth deposits have the characters of clay mineral, and the bound water on ore particles surface has adhesive and absorb effect on the leaching solution, and volume of pore is shrunken because of the bound water, the formation mechanism of bound water on ore particles surface was studied, and the effect of bound water on ore particles surface on the permeability rule of the leaching solution was investigated. The results show that the ion-absorbed rare earth deposits have the B-type particle structure. The loose ore particles can block the pore under the conditions of critical hydraulic slope and particle geometry size. Bound water on ore particles surface and the loose ore particles are the two major factors impacting the permeability rule of the leaching solution.

关 键 词：原地溶浸 离子型稀土矿 结合水 松散颗粒 渗漉规律 

分 类 号：TD32[矿业工程—矿井建设]