摘要
研究了低品位钽铌原料的湿法处理新工艺。在新工艺中用新型分解试剂替代HF和H2SO4,在300℃条件下分解低品位钽铌原料,其分解液采用甲基异丁基酮(MIBK)在低浓度酸条件下萃取钽、在高浓度酸条件下萃取铌,然后对钽液、铌液进行过氧化及沉淀后焙烧,得细粒径高纯度Ta2O5,Nb2O5产品,或者对钽液进行结晶,可制得高纯度的K2TaF7产品。
This article described an original hydrometallurgical method of low concentration Ta＆Nb raw materials, which includes using a new decomposing reagent A instead of HF and H2SO4 to decompose the low concentration Ta＆Nb raw materials at 300 ℃ ; extracting Ta at low acidity and Nb at high acidity by MIBK to separate Ta and Nb; precipitating Ta solution and Nb solution and calcining the oxides to obtain granule Ta2O5 and Nb2O5 with high purity, or crystallizing Ta solution to obtain high purity K2TaFT.
出处
《稀有金属快报》
CSCD
2008年第4期31-36,共6页
Rare Metals Letters
