In view of the problems of slower precipitation rate and lower recovery rate in the traditional preparation process of neodymium fluoride, the process of conversion with ammonia bicarbonate and adding macromolecular p...In view of the problems of slower precipitation rate and lower recovery rate in the traditional preparation process of neodymium fluoride, the process of conversion with ammonia bicarbonate and adding macromolecular precipitant aid to prepare neodymium fluoride was studied. The effect of HF amount, reaction temperature, rare earth concentrations and macromolecular precipitating aid on the recovery rate of rare earth and its precipitation rate were investigated. The particulate size, morphology and composition of NdF3 were analyzed by TEM, XRD, etc. A feasible process to produce good crystal degree neodymium fluoride with rapid precipitation and higher recovery rate was obtained.展开更多
文摘In view of the problems of slower precipitation rate and lower recovery rate in the traditional preparation process of neodymium fluoride, the process of conversion with ammonia bicarbonate and adding macromolecular precipitant aid to prepare neodymium fluoride was studied. The effect of HF amount, reaction temperature, rare earth concentrations and macromolecular precipitating aid on the recovery rate of rare earth and its precipitation rate were investigated. The particulate size, morphology and composition of NdF3 were analyzed by TEM, XRD, etc. A feasible process to produce good crystal degree neodymium fluoride with rapid precipitation and higher recovery rate was obtained.
