为了改变将昂贵的中、重稀土元素随混合轻稀土元素廉价出售的状况,充分发挥制备稀土元素的经济效益,我们把稀土矿石冶炼所得的混合氯化稀土溶液,经萃取将轻、中、重稀土元素分离,从有机相提取中、重稀土元素,从水相提取混合氯化轻稀土元 In order to change the situation of selling expensive middle and heavy rare earth elements with cheap light rare earth elements and give full play to the economic benefits of preparing rare earth elements, we mixed rare earth chloride solution obtained by smelting rare earth ore with light, medium and heavy Rare earth elements are separated, medium and heavy rare earth elements are extracted from the organic phase, mixed light chlorinated light rare earth elements are extracted from the aqueous phase