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序言P_(350)萃取分离镧的研究和生产已经有了几年的历史,经过几年来的生产实践证明这个流程还是比较好的,P_(350)也被证明是一个较好的分离镧的萃取剂。目前生产中采用了高浓度的料几的自盐检作用革除了盐析剂,简化了工艺,降低了成本,但该流程还有明显的不足之处,就是镧的收率低,这不仅影响到镧的成本,而且给后面的Pr、Nd分离带来了困难,使整个单稀土分离流程繁琐复杂。
P 350 Extraction and separation of lanthanum has been studied and produced for several years. After several years of production practice, this process is still relatively good. P 350 also proved to be a better extraction of lanthanum Agent. At present, the production of a high concentration of raw materials from a few salt salting the role of leather to remove the salinization agent, simplifying the process and reduce costs, but the process has obvious shortcomings, that is, the yield of lanthanum, which not only affect To the cost of lanthanum, but also to the back of the Pr, Nd separation difficulties, so that the entire single rare earth separation process cumbersome and complicated.