发明名称 |
PROCESS FOR THE PRODUCTION OF TITANIUM DIOXIDE |
摘要 |
<p>It is disclosed a process for the production of titanium dioxide comprising the following steps: (a) a titanium ore containing iron, preferably ilmenite, is reacted with an aqueous NH<SUB>4</SUB>F solution; (b) the aqueous suspension thus obtained is filtered with consequent separation of a sludge fraction, which contains ammonium fluoroferrates, and a filtrate fraction, which contains ammonium fluorotitanates; (c) the filtrate fraction thus obtained is subjected to an hydrolysis reaction; (d) the thus-obtained solid component is subjected to a thermal hydrolysis reaction. The plant and the reactors for performing the above process are also disclosed.</p> |
申请公布号 |
EP1727769(A2) |
申请公布日期 |
2006.12.06 |
申请号 |
EP20050716299 |
申请日期 |
2005.03.22 |
申请人 |
BRETON SPA |
发明人 |
GORDIENKO, PAVEL, S.;SINKOV, GENNADI, V. |
分类号 |
C01G23/047;C01G23/053;B01J8/00;B01J19/00;B01J19/02;B01J19/18;C09C1/24;C09C1/36 |
主分类号 |
C01G23/047 |
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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