共沉淀法制备超细含氟铈基抛光粉

发布时间：2018-03-17 04:16

  本文选题：共沉淀　切入点：含氟铈基抛光粉　出处：《稀土》2016年03期 　论文类型：期刊论文

【摘要】：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。
[Abstract]:Using lanthanum cerium chloride as raw material, ammonium bicarbonate as precipitant and ammonium fluoride as fluorination agent, rare earth polishing powder precursor was prepared by co-precipitation method. The properties of cerium based polishing powder were studied by aging temperature and the amount of fluorine. The results showed that the reaction temperature was room temperature, the reaction time was 50 min, the aging temperature was 80 鈩，

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