以氯化镧铈为原料,碳酸氢铵为沉淀剂,氟化铵为氟化剂,采用共沉淀法制备稀土抛光粉前驱体,前驱体经过高温焙烧可以得到含氟铈基抛光粉。通过改变沉淀方式、陈化温度、添加氟的量等因素对铈基抛光粉的性质进行了研究。实验结果表明,采用共沉淀法,反应温度为室温,反应时间为50 min,陈化温度80℃,陈化时间1h,掺氟量为5%时得到含氟铈基抛光粉颗粒粒度最小,D50粒径(二次粒径)为0.583μm。与其他传统生产超细抛光粉工艺相比,本方法简便易行,具有反应温度低,反应时间短,陈化时间短的优势,且与传统生产超细抛光粉工艺对比省去球磨或粉碎这一工序,可以直接得到满足客户需要的超细抛光粉,具有较高的经济效益和成本优势。 Using lanthanum cerium chloride as raw material, ammonium bicarbonate as precipitating agent and ammonium fluoride as fluorinating agent, a rare earth polishing powder precursor is prepared by coprecipitation method, and the precursor is calcined at high temperature to obtain fluorine-containing cerium-based polishing powder. The properties of cerium-based polishing powder were studied by changing the precipitation method, aging temperature and the amount of fluorine added. The experimental results show that the particle size of the fluorine-containing cerium-based polishing powder is the smallest when the coprecipitation method is used, the reaction temperature is room temperature, the reaction time is 50 min, the aging temperature is 80 ℃, the aging time is 1h and the amount of fluorine is 5% The particle diameter (secondary particle diameter) was 0.583 μm. Compared with other traditional superfine polishing powder production processes, the method has the advantages of low reaction temperature, short reaction time and short aging time compared with the traditional superfine polishing powder production process, and saves milling or grinding compared with the traditional superfine polishing powder production process A process, you can directly meet the needs of customers superfine polishing powder, with high economic and cost advantages.