发明名称 |
Process for production of CoCl2 solution from cobaltic oxide-hydrate |
摘要 |
This invention is concerned with a process for dissolving oxidic trivalent cobalt compounds in hydrochloric acid while avoiding the generation of chlorine. It includes the following steps (a) slurrying in water the trivalent cobalt compound to be dissolved and (b) treating the resulting slurry with a reduction agent from the group consisting of methanol, formaldehyde and formic acid and with hydrochloric acid. The contact of the hydrochloric acid with the slurry should occur in the presence of the reducing agent. The rate of acid addition should be controlled to maintain the slurry at a pH above 1.
|
申请公布号 |
US4394366(A) |
申请公布日期 |
1983.07.19 |
申请号 |
US19810260059 |
申请日期 |
1981.05.04 |
申请人 |
INCO LIMITED |
发明人 |
ETTEL, VICTOR A.;DEVUYST, ERIC A.;ILLIS, ALEXANDER |
分类号 |
C01G51/08;(IPC1-7):C01G53/08 |
主分类号 |
C01G51/08 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|