用碳酸氢铵沉淀分离稀土最优工艺的研究

Stady on the Selection of the Optimization Process that Reae-Earths are Extracted by the Ammonium Hydrocarbonate Precipitation Method

研究用碳酸氢铵沉淀法分离稀土的各种条件和最优工艺的选择。结果表明，用碳酸氢铵沉淀分离稀土得到的混合氧化稀土产物的总含量（ＲＥ±２０±３％）达到国家出口产品标准（９２％）以上。

The conditions and the selection of the optimization process that rare earths are extracted by the ammonium hydrocarbonate precipitation are studied. The results indicate that rare earths extracted by the ammonium hydrocarbonate precipitation method obtain mixed oxidized rare earths products content (RE2O3%)over national output standard (92%).