| 发明名称 |
FORFARANDE FOR UTFELLNING AV EN VESENTLIGEN JERNFRI KROM(III)FORENING |
| 摘要 |
A chromium (III) compound containing very little iron compound contaminant is selectively precipitated from a mixture of iron and chromium compounds in aqueous acid solution by use of an elevated temperature and pressure, the acid aqueous solution of iron and chromium compounds containing at least 2 g/l of bivalent chromium. |
| 申请公布号 |
SE435492(B) |
申请公布日期 |
1984.10.01 |
| 申请号 |
SE19800000918 |
申请日期 |
1980.02.05 |
| 申请人 |
OUTOKUMPU OY |
发明人 |
1)S O * HEIMALA;2)S-E * HULTHOLM;3)F H * TUOVINEN |
| 分类号 |
C01G37/00;C01G37/02;(IPC1-7):01G37/00 |
主分类号 |
C01G37/00 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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