发明名称 |
Vanadium recovery process |
摘要 |
<p>A process for the preparation of pentavalent vanadium compounds from acid extracts obtained by regenerating spent catalysts which contain vanadium, this process comprising the successive steps of 1) oxidizing extracts containing tri- and tetravalent vanadium with an oxygen-containing gas at a pH of at least 0.7-1.4 P and at most 2.3-1.4 P to form a solution of tetravalent vanadium compounds, and 2) continuing the oxidation at a pH lying in the range of from 3.2-1.4 P to 2.3-1.4 P to form concentrates of pentavalent vanadium, in which P stands for the partial oxygen pressure, in MPa.</p> |
申请公布号 |
GB2185007(A) |
申请公布日期 |
1987.07.08 |
申请号 |
GB19860005591 |
申请日期 |
1986.03.06 |
申请人 |
* SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B V |
发明人 |
JUST JAN CHRISTIAN * JANSZ |
分类号 |
C01G31/00;C22B34/22;(IPC1-7):C01G31/02 |
主分类号 |
C01G31/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|