发明名称 |
Process for the production of high-purity iron oxide. |
摘要 |
Described is a process for the production of high-purity iron oxide comprising: A step of contacting an iron ions-containing organic solution containing one or more compounds selected from the group consisting of alkyl phosphoric acids, alkyl and aryl dithio phosphoric acids, carboxylic acids and hydroxyoximes together with a petroleum hydrocarbon as a diluent with an aqueous solution containing one or more compounds selected from the group consisting of HF, NH4HF2 and NH4F to obtain ammonium iron fluoride or iron fluoride, and a step of heating the ammonium iron fluoride or iron fluoride obtained in a gas atmosphere containing oxygen or water.
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申请公布号 |
EP0046973(A1) |
申请公布日期 |
1982.03.10 |
申请号 |
EP19810106592 |
申请日期 |
1981.08.25 |
申请人 |
SOLEX RESEARCH CORPORATION OF JAPAN |
发明人 |
WATANABE, MORIO;NISHIMURA, SANJI |
分类号 |
C21B15/00;B01D11/04;C01G49/00;C01G49/06;(IPC1-7):C01G49/06;C01G49/10 |
主分类号 |
C21B15/00 |
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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