Preparation method of oil-free rare earth carbonate

The invention discloses a preparation method of oil-free rare earth carbonate, which includes steps of: deoiling a rare earth material liquid, obtained via extraction and separation, and a precipitator; mixing the oil-free rare earth material liquid and the precipitator solution and performing precipitation; and washing and filtering solid rare earth carbonate to obtain the oil-free rare earth carbonate. The method solves the problem that the deoiling material cannot be used repeatedly and the extraction agent cannot be recycled. 本发明公开了种无油碳酸稀土的制备方法，包括：将萃取分离所得的稀土料液和沉淀剂做去油处理；将无油的稀土料液和沉淀剂溶液混合进行沉淀；对固体稀土碳酸盐进行洗涤、过滤后得到无油稀土碳酸盐。本发明解决了除油材料不能重复利用，萃取剂不可回收的问题。