摘要
钽铌精矿经硫酸－氢氟酸分解，萃取法提取钽铌后，残液中含有ＷＯ＿３２０－５０ｇ／Ｌ，研究了Ｎ＿（２３５）－仲辛醇－煤油体系萃取回收钨，采用氨水反萃取。通过一系列条件试验，及扩大试验验证，钽铌萃余液中钨是可以回收的，并可制成合格的仲钨酸铵产品。
Niobium and tantalum were extracted from the leach liquor of Nb-Ta concen-trates ,and tungsten values recovered from the extraction raffinate(containing WO_3 at a con-centration of 20-50g/L)by extracting with N_(235)-sec.-octonol in kerosine and atripping withaqueous ammonia. The condition tests and pilot scale tests showed that tungsten values arerecoverable from the raffinate as ammonium paratungstate up to quality standard.
出处
《矿冶工程》
CAS
CSCD
北大核心
1994年第2期45-48,共4页
Mining and Metallurgical Engineering
关键词
钽铌萃余液
萃取
钨
Niobium-Tantalum concentrate,Solvent extraction,Ammonium paratungstate
