不同深度离子型稀土矿连续浸出实验  

Continuous Leaching Test of Ion-type Rare Earth Ore at Different Depths

作　　者：李超[1,2] 舒荣波 程蓉[1,2] 张琪 蒲杨名[1] 徐易鸣 Li Chao;Shu Rongbo;Cheng Rong;Zhang Qi;Pu Yangming;Xu Yiming(Institute of Multipurpose Utilization of Mineral Resources,CAGS,Chengdu,Sichuan,China;Mine Ecological Protection and Restoration Technology Center(Western),China Geological Survey,Sichuan Rare Earth Technology Innovation Center,Applied Technology Innovation Center of Rare Earth Resources,China Geological Survey,Chengdu,Sichuan,China)

机构地区：[1]中国地质科学院矿产综合利用研究所,四川成都610041 [2]中国地质调查局矿山生态保护修复技术中心(西部),四川省稀土技术创新中心,中国地质调查局稀土资源应用技术创新中心,四川成都610041

出　　处：《矿产综合利用》2023年第4期78-82,共5页Multipurpose Utilization of Mineral Resources

基　　金：中国地质调查局地质大调查项目(DD20230039);科技部国家重点研发计划课题(2021YFC2902201)。

摘　　要：这是一篇冶金工程领域的论文。以赣州地区某离子型稀土矿为研究对象,采用连续搅拌浸出和柱浸的方式,研究不同条件下矿样中稀土及杂质元素的浸出情况,为离子型稀土矿产资源的绿色高效开采提供参考。实验结果表明:连续搅拌浸出过程中稀土浸出率均在80%左右,二次浸出液中TREO/Al明显增大,TREO/Ca明显减小,TREO/Mg略微减小;柱浸实验中随着浸矿深度的增加,浸出液pH值逐步上升,TREO/Al增加至15.52,TREO/Ca降低至0.64。稀土浸出率均达到96%以上,但随着深度的增加轻稀土配分由49.43%上升到了53.28%,重稀土配分从35.91%逐步下降至32.18%。连续搅拌浸出和柱浸实验均表明随着矿样深度的增加,稀土浸出率无明显降低,低品位矿层稀土浸出仍然具有一定的可行性。This is an essay in the field of metallurgical engineering.The ion-type rare earth ore in Ganzhou was treated as the research object.Continuous stirring leaching and column leaching were used to study the leaching of rare earth and impurity elements in ore samples.The test results provide a reference for the green and efficient mining of ion-type rare earth mineral resources.The test results show that the rare earth leaching rate is about 80% in the continuous stirring leaching process.The TREO/Al in the secondary leaching solution increases significantly,while the TREO/Ca decreases significantly and the TREO/Mg decreases slightly.With the increase of ore depth,the pH value of leachate gradually increased,TREO/Al increased to 15.52,and TREO/Ca decreased to 0.64.The leaching rate of rare earths all reached more than96%,but with the increase of depth,the proportion of light rare earth increased from 49.43% to 53.28%,and the proportion of heavy rare earth gradually decreased from 35.91% to 32.18%.The continuous stirring leaching and column leaching tests both show that with the increase of the depth of the ore sample,the leaching rate of rare earth does not decrease significantly,and the leaching of rare earth in low-grade ore seams is still feasible.

关 键 词：冶金工程 离子型稀土矿 搅拌浸出 柱浸 稀土配分 

分 类 号：TD983[矿业工程—选矿] TF845[冶金工程—有色金属冶金]