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稀土联动萃取工艺以两出口工艺为设计基础。第一模块对原料进行了预分离,第二模块充分利用了稀土元素间的交换功能,省去了第一分离段的反萃及最后分离段的皂化工序。由于其具有酸碱消耗量低、操作方便、废水产生量小等特点,近年来被越来越多稀土分离企业所青睐。针对以氟碳铈和独居石混合矿为代表的白云鄂博稀土矿,根据生产实践经验和目前市场所需要的产品结构,提出了几种可行的P507-HCl体系联动萃取工艺流程。通过比较各联动工艺流程及传统两出口工艺流程的槽体级数、混合室容积大小、有机相和稀土存槽量、盐酸及液碱单耗、废水产生量,找出最优切割方式或联动模式,从而为白云鄂博稀土矿的联动萃取分离提供更优化工艺流程。
Rare earth linkage extraction process with two export process as the design basis. The first module pre-separation of raw materials, the second module takes full advantage of the exchange function between rare earth elements, eliminating the first separation of the stripping section and the final separation of the saponification process. Due to its low acid-base consumption, easy operation, small amount of wastewater generated in recent years by more and more rare earth separation companies favored. In view of the Bayan Obo rare earth ore represented by bastnaesite and monazite mixed ore, several feasible P507-HCl system extraction processes are proposed according to the production practice and the product structure required by the market. By comparing the tank series, the volume of the mixing chamber, the volume of organic phase and rare earth, the unit consumption of hydrochloric acid and caustic soda, the amount of waste water produced by each linkage process and the traditional two-exit process, to find the optimal cutting mode or linkage Mode, thus providing a more optimized process for the linkage extraction and extraction of the Bayan Obo rare earth ore.