发明名称 |
Cyclic process for recovering metal values and alumina from spent catalysts |
摘要 |
Metal values and alumina are recovered from spent, usually oily, catalysts by oxygen pressure leaching with sodium hydroxide and/or sodium aluminate to dissolve molybdenum, vanadium and/or tungsten and provide a solid, filterable residue containing alumina and cobalt and/or nickel, the residue is digested with sodium hydroxide to give a sodium aluminate solution and a residue enriched in nickel and/or cobalt, alumina is recovered from the sodium aluminate solution as a solid and the remaining supernatant solution is recycled to the oxygen pressure leaching step wherein the alumina content of the aluminate solution is precipitated and a bleed for metals in the aluminate solution is provided.
|
申请公布号 |
US4670229(A) |
申请公布日期 |
1987.06.02 |
申请号 |
US19860861690 |
申请日期 |
1986.05.09 |
申请人 |
AMAX INC. |
发明人 |
WIEWIOROWSKI, EDWARD I.;TINNIN, LUTHER R.;CRNOJEVICH, RANKO |
分类号 |
C01F7/14;C01G31/00;C01G39/00;C01G41/00;C22B7/00;C22B34/22;C22B34/34;C22B34/36;(IPC1-7):C01G31/00 |
主分类号 |
C01F7/14 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|