关键词: 离子型稀土矿开发技术, 原地浸出, 浸出液的净化除杂, 稀土的沉淀分离, 发展方向

Abstract: The feature of ion-absorbed type rare earth ore is introduced.The research and practical progress on exploitation technique of ion-absorbed type rare earth ore are summarized from aspects of improvements in leaching, purification of leaching solution, settlement process and its technical and economic index, and environmental benefits.Some problems existing in the exploitation process of ion-absorbed type rare earth ore were pointed out.It is recommended that researches on basic theory of in-situ leaching process and slope stability management should be strengthened in the future, and high-efficient and low-polluted leaching agent and precipitating agent be prepared to substitute ammonium sulfate and ammonium bicarbonate, secondary migration rule of rare earth and heavy metal ions in tailings be grasped, and recovery of low-grade ion-absorbed rare earth be emphasized.Finding an efficient way to solve problems of slow precipitation existing in ammonium bicarbonate precipitation method and difficulty in preparing crystal rare earth carbonate can promote sustainable development of green and high efficient exploitation technique of ionic-type rare earth ore.

Key words: Exploitation technique of ion-absorbed type rare earth ore, In-situ leaching process, Purification of leaching solution, Separation of rare earth by precipitation, Development trend