摘要
本文研究了以氟碳铈矿加碳酸钠焙烧－稀盐酸浸出工艺所得的铈富集物为原料，直接制取高效稀土抛光粉的适宜工艺，研究了焙烧条件对抛光粉性能的影响。结果表明，该工艺所得铈富集物在８００℃下焙烧３ｈ制备的稀土抛光粉（简称Ｌ－２型），其抛蚀量为３７．４ｍｇ／１０ｍｉｎ，比以上述原料在５００℃下焙烧所得抛光粉（简称Ｌ－１型）的抛蚀量提高近一个数量级。用粒度仪、ＳＥＭ、ＸＲＤ等分析手段对其性能进行了检测，得出Ｌ－２型抛光粉的ｄ５０＝１．９４μｍ，颗粒均匀，物相组成主要为面心立方ＣｅＯ２。所得研究结果为采用该工艺制取稀土抛光粉提供了基础数据。
The technology of preparing the polishes directly from the Ce rich concentrate that was prepared from bastnasite roasting with Na 2CO 3 and then leached by hydrochloric acid was studied,and the effects of roasting conditions on the properties of polishes was studied also.The polish (L-2) prepared by roasting the Ce rich concentrate for 3h in 800℃.The polishing ability of L-2 was 37.4mg/10min that was far higher than that of the polish (L-1) prepared by roasting the Ce rich concentrate for 2h in 500℃.The properties of polishes were gotten by using particle analysiser,SEM,XRD and so on,the results can be used when preparing the polish with this technology.
出处
《稀土》
EI
CAS
CSCD
北大核心
1998年第4期39-41,45,共4页
Chinese Rare Earths
关键词
稀土
抛光粉
制备
铈富集物
氧化铈
rare earth,CeO 2,polish,preparation,Ce rich concentrate
