发明名称 |
PROCESS FOR PRODUCING TITANIUM DIOXIDE CONCENTRATES |
摘要 |
<p>1. Process for making titanium dioxide concentrates by removing iron and vanadium from material containing titanium oxide and iron and vanadium oxides which comprises : allowing the material containing titanium oxide to travel downwardly under the influence of gravity inside a reaction zone heated to 800 to 1010 degrees C and reacting it which a countercurrently flowing mixture consisting of chlorine and up to 30 volume % inert gas, resulting iron (III) chloride and vanadium oxychloride becoming volatilized and a residue consisting essentially of titanium dioxide remaining behind.</p> |
申请公布号 |
EP0085345(B1) |
申请公布日期 |
1986.06.11 |
申请号 |
EP19830100378 |
申请日期 |
1983.01.18 |
申请人 |
HOECHST AKTIENGESELLSCHAFT |
发明人 |
JODDEN, KLAUS, DR.;HEYMER, GERO, DR.;STEPHAN, HANS-WERNER |
分类号 |
C22B34/12;(IPC1-7):C22B34/12 |
主分类号 |
C22B34/12 |
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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