云南省某地区离子型稀土矿提取试验研究

对云南省某地区离子型稀土矿进行提取试验研究,探索最佳工艺参数,为该矿区稀土工业开采提供技术参考.研究表明:稀土矿组成以SiO2和Al2 O3为主(约占90％),其次为Fe2 O3和K2 O(约占8％),稀土离子相品位为0.078％,提取的稀土产品配分显示氧化镧含量高达60％ 以上,是一个富镧型的轻稀土矿.采用原地浸矿开...

Experimental study on extraction of ionic rare earth ore in a region of Yunnan province

An experimental study on the extraction of ionic rare earth ore in a certain area of Yunnan province was carried out to explore the optimal technological parameters,hoping to provide technical reference for the industrial mining of rare earth in this mining area.The results showed that the ore soil of this mine area was composed of SiO₂ and Al₂O₃,accounting for about 90%,followed by Fe₂O₃ and K₂O,accounting for about 8%.The grade of rare earth ion phase was 0.078%.The distribution of the extracted rare earth products showed that the content of lanthanum oxide reached up to more than 60%,and it was a lanthanum-rich light rare earth ore.In-situ leaching was recommended,and solution leaching of 2.0%reagent A was recommended,which can have a better leaching rate of rare earth.The pH value of rare earth enrichment process in mother liquor was 5.8,and the pH value of precipitation was 6.9,and qualified rare earth products can be obtained under those parameters.