发明名称 |
Process for dissolving tantalum/columbium materials containing alkali metal impurities |
摘要 |
Disclosed is a process for dissolving tantalum and/or columbium-containing materials contaminated with alkali metal impurities. The tantalum and columbium materials are digested in a solution comprising hydrofluoric acid and a fluosilicate-containing compound. The alkali metals are reacted to form precipitated fluosilicates, which then can readily be separated.
|
申请公布号 |
US4663130(A) |
申请公布日期 |
1987.05.05 |
申请号 |
US19830551116 |
申请日期 |
1983.11.14 |
申请人 |
CABOT CORPORATION |
发明人 |
BERGMAN, ROGER M.;BIELECKI, EDWIN J.;HIGGINS, BRIAN J.;ROMBERGER, KARL A. |
分类号 |
C01G33/00;C01G35/00;C01G35/02;C22B34/24;(IPC1-7):C01G31/00 |
主分类号 |
C01G33/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|