发明名称 METHOD FOR PURIFYING TiO2 ORE
摘要 Process for beneficiating titanium bearing ore selected from the group consisting essentially of titaniferous ores, leucoxene, rutile, perovskite, and sphene comprising: (a) contacting said ore with an aqueous solution of a mineral acid having a concentration of about 3-30 percent by weight, said contacting taking place at a temperature of about 160-300 DEG C, until the desired amount of impurities are solubilized and a leachate is formed; (b) removing the leachate from the product of step (a).
申请公布号 WO9220827(A1) 申请公布日期 1992.11.26
申请号 WO1992US03446 申请日期 1992.05.01
申请人 E.I. DU PONT DE NEMOURS AND COMPANY 发明人 CHAO, TZE
分类号 C01G23/04;C22B34/12 主分类号 C01G23/04
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