风化壳淋积稀土矿浸取动力学基础理论研究

Basic theory of leaching kinetics on the weathered crust elution-deposited rare earth ores

风化壳淋积型稀土开采先后经历了池浸、堆浸和原地浸矿,目前采用原地浸矿法.研究风化壳淋积型稀土浸取动力学有助于从本质上提高浸矿效率和资源回收率,为高效、科学开采风化壳淋积型稀土矿提供理论依据,进一步完善风化壳淋积型稀土的原地浸出理论和技术.为此对风化壳淋积型稀土矿浸取动力学基础理论进行研究,并针对现有浸矿工艺,指出了影响浸取效率的因素,提出了提高风化壳淋积型稀土浸取速度的方法与措施.

Weathered crust of elution-deposited rare earth ores have gone through pool leaching,heap leaching and in-situ leaching.The third method is used at present.Study on leaching kinetics of the ores can improve the leaching efficiency and recovery rate of resources.It can also provide a theoretical basis for efficient and scientific exploitation of them and further improve the theory and technology of in-situ leaching of rare earth.Therefore,this paper studied the basic theory of the leaching kinetics on such ores.In the light of the existing mineral leaching techniques,this study pointed out factors that could affect leaching efficiency and put forward measures that could increase the leaching rate for the ores.