摘要
采用过氧化钠熔融分解试样,在碱性条件下分离大量金属离子,在弱酸性条件下钽、铌与单宁酸形成络合物,煮沸后以沉淀析出,从而达到分离、富集的目的,沉淀经过滤、洗涤和灼烧,氢氟酸去硅后,将铌、钽制成氢氟酸溶液,用ICP-AES光谱仪测定。
The method adopts sodium oxide molten to decompose sample, a great quantity of metal ion shall be separated under alkaline condition, tantalum and niobium shall be formed to tannin complexes under weak acidity condition, which shall be precipitated after boiling, accordingly, separation and enrichment aim can be reached; after filtration, scrubbing and burning, as well as desiliconizing by hydrofluoric acid, niobium and tantalum shall be made into hydrofluoric acid solution, which shall be determined by ICP-AES spectrometer.
出处
《云南冶金》
2013年第1期58-61,共4页
Yunnan Metallurgy
关键词
矿石
熔融
富集
ICP-AES法测定
钽
铌
ore
mohen
enrichment
ICP-AES method determination
tantalum
niobium
