离子型稀土矿富含中重稀土元素，是我国宝贵的稀土矿产资源。原地溶浸工艺是离子型稀土矿最佳的浸取工艺，但长期的生产实践表明原地溶浸工艺依然存在着适应性差、浸出率低、浸出周期长，矿体药剂残留量高及边坡稳定性差等问题，限制了原地溶浸技术快速发展与广泛推广。本项目以离子型稀土矿为研究对象，采用X光CT技术，探索离子型稀土矿矿体孔隙网络的细观结构特征，分析其对传质效果的影响，采用粒子成像测速技术探索浸出过程的孔隙扩散特性，实现孔隙扩散过程的可视化表征。探索原地溶浸体系溶质的传质过程与表现形式，建立浸出传质过程模型，计算出其传质系数，阐明不同条件下原地溶浸体系传质效果的差异，揭示原地溶浸体系孔隙扩散与传质过程内在联系，找出二者协同作用的关键因子，探索强化传质过程的最佳途径，探寻原地溶浸体系传质过程的优化调控措施，为实现离子型稀土矿绿色高效提取奠定理论基础。

The medium-heavy rare erarth rlements which included in ionic rare earth ore is our precious rare earth mineral resources. The RE in-situ leaching process is the optimal leaching process for the ionic RE ore, but long-term production shows this process still exist poor adaptability,low leaching rate,long leach cycle,high Stability drug residues in ore body and poor slope stability,those problems limited the in-situ leaching technology rapid development and widely spread.This research investigate the ionic rare earth ore, using X-ray and CT to explore the structural features of ionic RE ore body microscopic pore networks, analyze the impact on the mass transfer,using particle inaging velocimetry technique to explore the leaching process pore diffusing characteristics, visualization characterized of pore diffusion process. Explored the solute of in-situ leaching system mass transfer processes and forms,and established the leaching process of mass transfer model to calculate its mass transfer coefficient, , clarified the the difference by in-situ leaching system mass transfer under different conditions,showed the links and found the key between of the leaching system pore diffusion and mass transfer processes intrinsic.Explored the best ways to strengthen the mass transfer process and got the regulate measures to optimize the mass transfer process.This study lay rhe foundation for the realization efficient extraction of green ionic RE mine.