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RARE EARTH ELEMENT COMPOSITIONS OBTAINED FROM PARTICULATE MATERIAL COMPRISING KAOLINITE AND METHODS FOR OBTAINING RARE EARTH ELEMENT COMPOSITIONS FROM PARTICULATE MATERIAL COMPRISING KAOLINITE
RARE EARTH ELEMENT COMPOSITIONS OBTAINED FROM PARTICULATE MATERIAL COMPRISING KAOLINITE AND METHODS FOR OBTAINING RARE EARTH ELEMENT COMPOSITIONS FROM PARTICULATE MATERIAL COMPRISING KAOLINITE
A method for obtaining rare earth element compositions may include providing a dispersed aqueous suspension of a particulate material including at least one rare earth element compound and kaolinite. The method may further include adding to the suspension a selective flocculation polymer that facilitates separation of at least a portion of the at least one rare earth element compound from the kaolinite by flocculating the kaolinite and allowing particles of the rare earth element compound to be or remain deflocculated. The method may also include allowing the suspension containing the polymer to separate in a selective flocculation separator into layers including a flocculated product layer and a deflocculated layer containing the portion of the at least one rare earth element compound. The method may further include extracting each of the separated layers from the separator. The rare earth element compound may include La2O3, CeO2, Nd2O3, or Y2O3.
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机译:获得稀土元素组合物的方法可包括提供颗粒材料的分散的含水悬浮液,其包括至少一种稀土元素化合物和高岭石。该方法还可包括将悬浮液加入选择性絮凝聚合物,其通过絮凝高岭石并允许稀土元素化合物的颗粒来促进至少一部分至少一种稀土元素化合物从高岭石分离或留下或保留偏离。该方法还可包括允许含有聚合物的悬浮液在选择性絮凝分离器中分离成包含絮凝的产物层的层和含有至少一种稀土元素化合物的一部分的偏流层。该方法还可以包括从分离器中提取分离层中的每一个。稀土元素化合物可包括La2O3,CeO 2,Nd2O3或Y 2 O 3。
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