Mixed rare earth oxides have been prepared from synchysite ore from the Lugiin gol rare earth deposit (Mongolia) which contains about 6% of cerium light rare earth elements. Ore powders were leached for up to 60 min using 80-120 g/l sulfuric acids at an acid to powder ratio of 20, agitation was performed by magnetic stirring followed by precipitation and calcination at 700°C for 1h. The highest leaching of REEs equal to 85% of the total REE was observed in the acid solution of 80 g/l. Obtained mixed rare earth oxides represent a layered type structure.
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机译:混合稀土氧化物是由Lugiin锡稀土矿床(蒙古)的杂合矿石制备的,该矿床含约6%的铈轻稀土元素。使用80-120 g / l的硫酸以酸粉比20浸提矿石粉长达60分钟,通过磁力搅拌进行搅拌,然后在700°C沉淀和煅烧1h。在80 g / l的酸性溶液中观察到REE的最高浸出量等于总REE的85%。得到的混合稀土氧化物表示层状结构。
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