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    • 6. 发明授权
    • Selective chlorination method for mixtures of metallic oxides of natural
or synthetic origin
    • 天然或合成来源的金属氧化物混合物的选择性氯化方法
    • US4563338A
    • 1986-01-07
    • US504037
    • 1983-05-25
    • Francoise SeonGerard PicardBernard TremillonYves Bertaud
    • Francoise SeonGerard PicardBernard TremillonYves Bertaud
    • C01B9/02C01B33/08C01F7/56C01F7/60C01G1/06C01G23/02C01G49/10
    • C01F7/60C01G1/06C01G49/10Y10S423/12
    • A selective chlorination method of a mixture of simple or complex metallic oxides, comprising at least one of the elements to be used, iron, aluminum, titanium and silicon, as well as the impurities accompanying said elements, said method consisting of a grinding, a calcination, a placing in suspension in a bath of melted salts of the mixture of said metallic oxides and of their impurities and of an introduction of chlorinating agents into said bath maintained at a temperature which assures the volatility of at least one of the metallic chlorides formed; characterized by the fact that, in order to selectively extract the metallic chlorides formed from the bath, specific chlorinating mixtures are introduced into this bath by successive steps, said mixtures having increasing chlorinating power, and the introduction is in a number at the most equal to the usuable elements to be chlorinated. This method is applied specifically to clays, bauxites, kaolins oil or bituminous shales, red sludges, oxide concentrates, anorthosite, feldspath and ilmenite.
    • PCT No.PCT / FR82 / 00160 Sec。 371日期:1983年5月25日 102(e)日期1983年5月25日PCT提交1982年9月29日PCT公布。 第WO83 / 01249号公报 日期:1983年4月14日。简单或复杂金属氧化物的混合物的选择性氯化方法,包括至少一种要使用的元素,铁,铝,钛和硅,以及伴随所述元素的杂质, 该方法包括研磨,煅烧,在所述金属氧化物及其杂质的混合物的熔融盐浴中的悬浮液中放置并将氯化剂引入所述​​浴中,所述温度保持在保证at的挥发性的温度 至少形成一种金属氯化物; 其特征在于,为了选择性地提取由浴形成的金属氯化物,特定的氯化混合物通过连续的步骤引入该浴中,所述混合物具有增加的氯化能力,并且引入量最多等于 可氯化元素。 该方法专门用于粘土,铝土矿,高岭土油或沥青页岩,红泥,氧化物浓缩物,长沸石,长石和钛铁矿。