Method of catalytic oxidation of U4+ to U6+ using a catalyst Muhamedzhan-1
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    发明申请
    Method of catalytic oxidation of U4+ to U6+ using a catalyst Muhamedzhan-1 审中-公开
    使用催化剂Muhamedzhan-1将U4 +催化氧化成U6 +的方法

    公开(公告)号:US20130104698A1

    公开(公告)日:2013-05-02

    申请号:US13317960

    申请日:2011-11-01

    CPC分类号: C22B60/0247 C22B60/0234

    摘要: The proposed methods are exemplarily utilized in uranium hydrometallurgy for selective extraction of uranium out of ore by in situ or heap leaching. According to the disclosure, the methods encompass catalytic oxidation of U4+ to U6+ using a proposed oxidizing catalyst “Muhamedzhan-1”, filtration of this solution through ore, transferring hexavalent uranium, trivalent iron, and other metal ions into a production solution, extraction of uranium yielding a barren solution and re-circulation of this solution back for ore leaching. The methods essentially improve known technologies by employing “Muhamedzhan-1”, being a solution of d- and f-mixed valence metal salts (MLn, wherein M=Fe, U, Cu, Mn, and L=NO3−, SO42−Cl−, Br−, I−) and alkali metal halogenides (MX, wherein M=Na+, Na+, K+, and X=Cl−, Br−, I−) used as an oxidizing agent, with the weight ratio of MLn: 0.01-25.0%, MX: 0.01-12.5%, and solvent: balance.

    摘要翻译: 所提出的方法被示例性地用于铀湿法冶金用于通过原位或堆浸选择性提取矿石中的铀。 根据本发明,所述方法包括使用提出的氧化催化剂“Muhamedzhan-1”将U4 +催化氧化成U6 +,通过矿石过滤该溶液,将六价铀,三价铁等金属离子转移到生产溶液中,萃取 铀产生贫瘠的溶液,并将该溶液重新循环回用于矿石浸出。 该方法通过采用“Muhamedzhan-1”作为d-和f-混合价态金属盐(MLn,其中M = Fe,U,Cu,Mn和L = NO3-,SO42-Cl - ,Br - ,I-)和用作氧化剂的碱金属卤化物(MX,其中M = Na +,Na +,K +和X = Cl-,Br-,I-),其重量比为MLn:0.01 -25.0%,MX:0.01-12.5%,溶剂平衡。