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    Process for producing titanium dioxide
    2.
    发明公开
    Process for producing titanium dioxide 失效
    生产二氧化钛的方法

    公开(公告)号：EP0440406A3

    公开(公告)日：1992-09-02

    申请号：EP91300643.3

    申请日：1991-01-29

    申请人： Solex Research Corporation of Japan

    发明人： Watanabe, Morio

    IPC分类号： C01G23/053

    CPC分类号： C01G23/0532 ,  C01G23/001

    摘要： There is disclosed the first step comprising bringing a sulphuric acid solution containing titanium ion together with one or more kinds of metal ions into contact with an organic solvent (a) composed of one or more extractants selected from the group consisting of oxygen-containing extractants and alkylamine extractants diluted with a petroleum hydrocarbon diluent to extract the titanium ion as a sulphuric acid complex from the sulphuric acid solution; and bringing the organic solvent (a) containing the extracted titanium in a form of a sulphuric acid complex (titanyl sulphate) into contact with an aqueous liquid having been employed for rinsing insoluble titanium hydroxide in the second step and/or an aqueous liquid having been employed for stripping in the third step to strip the titanium in a form of sulphuric acid complex into the aqueous liquid and to regenerate the organic solvent (a) for recycling for extraction, the second step comprising treating the aqueous liquid containing the titanium in a form of sulphuric acid complex stripped from the organic solvent (a) for hydrolysis to form insoluble titanium hydroxide; and washing the titanium hydroxide with dilute sulphuric acid and/or clear water, and the third step comprising bringing a part or whole of raffinate of extraction in the first step into contact with an organic solvent (b) composed of an extractant selected from the group consisting of oxygen-containing extractants and alkylamine extractants diluted with a petroleum hydrocarbon diluent to extract the titanium ion as a sulphuric acid complex from the raffinate; and bringing the organic solvent (b) containing extracted titanium in a form of sulphuric acid complex into contact with water, dilute sulphuric acid solution or a dilute titanyl sulphate solution to strip the titanium in a form of sulphuric acid complex to regenerate the organic solvent (b) for recycling the extraction.

    Crystallizer
    3.
    发明授权
    Crystallizer 失效
    结晶器

    公开(公告)号：EP0079246B1

    公开(公告)日：1989-01-25

    申请号：EP82305986.0

    申请日：1982-11-10

    申请人： Solex Research Corporation of Japan

    发明人： Watanabe, Morio ,  Nishimura, Sanji ,  Watanabe, Nobuatsu

    IPC分类号： B01D9/00 ,  B01D9/02

    CPC分类号： B01D9/0036 ,  B01D9/005

    摘要： A crystallizer comprises a crystallizer body 1 having a generally cylindrical upper part and a lower part conjoined with the other part and of a generally conical shape, apex lowermost. A mixing zone 4 is provided within the upper part of the body 1, to which zone are supplied an aqueous separating solution and an organic solvent containing extracted ions of a metal. The tank defining the mixing zone 4 has a pipe 6 descending therefrom, down to the lower part of the body 1 and beneath the pipe 6 is provided a fluidizing liquid inlet 8. Separating solution may be removed from the body through a ring pipe 17 and discharge pipe 16 by means of a pump 9, at least a portion of the removed solution being recirculated through the fluidizing inlet 8. The temperature of such recirculated solution may be adjusted as necessary. Crystals are discharged through pipe 12, whereas organic solvent may be removed from settling zone 5, through pipe 11. In operation, the extracted ions in the solvent are transferred to the separating solution to form a metal salt there, which salt is barely soluble in the solution and consequently crystal nuclei start to form in the descending pipe 6, which crystals are developed in zone 7 of the body 1, for subsequent removal through the pipe 12.

    Recovery process of uranium
    5.
    发明公开
    Recovery process of uranium 失效
    一种铀的恢复过程。

    公开(公告)号：EP0073524A2

    公开(公告)日：1983-03-09

    申请号：EP82108051.2

    申请日：1982-09-01

    申请人： Solex Research Corporation of Japan

    发明人： Watanabe, Morio ,  Nishimura, Sanji

    IPC分类号： C22B60/02

    CPC分类号： C22B60/026

    摘要： A recovery process of uranium is described comprising:

    (1) extracting uranium ions with an organic solvent containing one or more compounds selected from the group consisting of alkyl phosphoric acids, alkyl-aryl phosphoric acids, alkyl dithio phosphoric acids, aryl dithio phosphoric acids, neutral phosphoric acid esters and alkyl amines together with a petroleum hydrocarbon as diluent; and
    (2) stripping or extracting the uranium ions from the resultant organic solution of step (1) into an aqueous phase by contact with an aqueous solution containing one or more compounds selected from the group of NH 4 F, NH 4 HF 2 , KF or KHF 2 .

    Process for producing titanium dioxide
    7.
    发明公开
    Process for producing titanium dioxide 失效
    Verfahren zur Herstellung von Titandioxyd。

    公开(公告)号：EP0440406A2

    公开(公告)日：1991-08-07

    申请号：EP91300643.3

    申请日：1991-01-29

    申请人： Solex Research Corporation of Japan

    发明人： Watanabe, Morio

    IPC分类号： C01G23/053

    CPC分类号： C01G23/0532 ,  C01G23/001

    摘要： There is disclosed the first step comprising bringing a sulphuric acid solution containing titanium ion together with one or more kinds of metal ions into contact with an organic solvent (a) composed of one or more extractants selected from the group consisting of oxygen-containing extractants and alkylamine extractants diluted with a petroleum hydrocarbon diluent to extract the titanium ion as a sulphuric acid complex from the sulphuric acid solution; and bringing the organic solvent (a) containing the extracted titanium in a form of a sulphuric acid complex (titanyl sulphate) into contact with an aqueous liquid having been employed for rinsing insoluble titanium hydroxide in the second step and/or an aqueous liquid having been employed for stripping in the third step to strip the titanium in a form of sulphuric acid complex into the aqueous liquid and to regenerate the organic solvent (a) for recycling for extraction, the second step comprising treating the aqueous liquid containing the titanium in a form of sulphuric acid complex stripped from the organic solvent (a) for hydrolysis to form insoluble titanium hydroxide; and washing the titanium hydroxide with dilute sulphuric acid and/or clear water, and the third step comprising bringing a part or whole of raffinate of extraction in the first step into contact with an organic solvent (b) composed of an extractant selected from the group consisting of oxygen-containing extractants and alkylamine extractants diluted with a petroleum hydrocarbon diluent to extract the titanium ion as a sulphuric acid complex from the raffinate; and bringing the organic solvent (b) containing extracted titanium in a form of sulphuric acid complex into contact with water, dilute sulphuric acid solution or a dilute titanyl sulphate solution to strip the titanium in a form of sulphuric acid complex to regenerate the organic solvent (b) for recycling the extraction.

    摘要翻译： 公开了第一步骤，将含有钛离子的硫酸溶液与一种或多种金属离子一起与一种有机溶剂（a）接触，所述有机溶剂（a）由一种或多种提取剂组成，所述萃取剂选自含氧萃取剂和 用石油烃稀释剂稀释的烷基胺萃取剂，从硫酸溶液中萃取钛离子作为硫酸络合物; 并将含有硫酸络合物（硫酸氧钛）形式的提取的钛的有机溶剂（a）与在第二步中用于漂洗不溶性氢氧化钛的水性液体接触，和/或水溶液 用于在第三步骤中剥离以将硫酸络合物形式的钛剥离到水性液体中并再生有机溶剂（a）用于再循环用于萃取，第二步包括以含有钛的形式 的硫酸复合物从有机溶剂（a）中汽提出水解形成不溶性氢氧化钛; 和用稀硫酸和/或澄清水洗涤氢氧化钛，第三步骤包括使第一步骤中提取的萃余液的一部分或全部与由选自组中的萃取剂组成的有机溶剂（b）接触， 由含氧萃取剂和用石油烃稀释剂稀释的烷基胺萃取剂组成，从萃余液中提取钛离子作为硫酸络合物; 并将含有硫酸络合物形式的萃取的钛的有机溶剂（b）与水，稀硫酸溶液或稀硫酸硫酸盐溶液接触，以硫酸络合物的形式剥离钛以再生有机溶剂（ b）用于回收提取物。

    A method for manufacturing titanium oxide
    8.
    发明公开
    A method for manufacturing titanium oxide 无效
    Verfahren zur Herstellung von Titanoxid。

    公开(公告)号：EP0356132A1

    公开(公告)日：1990-02-28

    申请号：EP89308328.7

    申请日：1989-08-16

    申请人： Solex Research Corporation of Japan

    发明人： Watanabe, Morio ,  Sei, Renpei

    IPC分类号： C01G23/00 ,  C22B34/12 ,  C22B3/00

    CPC分类号： C01G23/0532 ,  C01G23/001 ,  C22B3/0012 ,  Y02P10/234 ,  Y10S423/14

    摘要： The invention relates to a method for manufacturing titanium oxide. In the method of the invention a sulfuric acid solution containing predominantly titanium ion together with one or more kinds of metal ions is brought into contact with an organic solvent. That solvent is one containing one or more species selected from oxygen-containing organic solvents, alkyl amines, and alkyl aryl amines and is used to extract the titanium ions in the form of a sulfuric acid complex from the sulfuric acid solution. Thereafter, the organic solvent containing the extracted titanium is brought into contact with water or a dilute aqueous sulfuric acid solution inversely to extract the titanium from the organic solvent into the water or the dilute sulfuric acid solution and to regenerate the organic solvent.

    摘要翻译： 本发明涉及一种制造氧化钛的方法。 在本发明的方法中，主要含有钛离子和一种或多种金属离子的硫酸溶液与有机溶剂接触。 该溶剂是含有选自含氧有机溶剂，烷基胺和烷基芳基胺中的一种或多种物质的溶剂，用于从硫酸溶液中提取硫酸络合物形式的钛离子。 然后，使含有提取的钛的有机溶剂与水或稀硫酸水溶液相反地接触，将钛从有机溶剂中提取到水或稀硫酸溶液中并再生有机溶剂。