摘要
萃取分离是制取高纯氧化铌主要方法,在一定条件下,可以达到制取高纯氧化铌目的,但随着原料杂质复杂化,尤其是难分离杂质Sb的超标,单纯依靠萃取制取高纯氧化铌变得尤其困难,需要运用新的方法加以解决Sb超标问题。为此联合运用调整价态萃取与陶瓷膜过滤法,通过调整价态萃取最大限度降低Sb含量,再利用Nb与Sb在一定条件下溶解度各不相同原理,通过特种溶解试剂溶解、陶瓷膜过滤除Sb,可以最大限度地过滤分离Nb与Sb,达到制取超高纯氧化铌(ω(Sb)<5×10^-6,即5 ppm)的目的。
Extraction separation is a major method for making high purity niobium oxide.Under certain conditions,it can achieve the aim for making high purity niobium oxide.But as the raw material of impurities are complicating,especially difficult to separate impurity Sb,it is difficult to rely on extraction for making high purity niobium oxide.Thus,new methods to solve the problem of excessive Sb should be invented.In this paper,adjustment valence extraction and ceramic membrane filtration were combined to reduce Sb content to the greatest extent by adjusting valence extraction,and the principle that Nb and Sb have different solubility under certain conditions is utilized.Nb and Sb can be filtered and separated to the greatest extent by dissolving special dissolving reagent and removing Sb by ceramic membrane filtration,thus achieving the purpose of preparing ultra-high purity niobium oxide(ω(Sb)<5×10^-6,5 ppm).
作者
张何鹏
孙思聪
梅龙宝
梁粱
ZHANG Hepeng;SUN Sicong;MEI Longbao;LIANG Liang(Jiangxi Haixie Rare Metal Materials Co.,Ltd.,Jiujiang 332000,China)
出处
《有色金属科学与工程》
CAS
2020年第2期71-75,共5页
Nonferrous Metals Science and Engineering
基金
九江市重点科技项目。
关键词
萃取
SB
试剂溶解
陶瓷膜过滤
超高纯氧化铌
extraction
Sb
reagent dissolves
ceramic membrane filtration
super high purity niobium oxide
