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    METHOD FOR PREPARING URANIUM CONCENTRATES BY FLUIDIZED BED PRECIPITATION, AND PREPARATION OF UO3 AND U3O8 BY DRYING/CALCINING SAID CONCENTRATES
    1.
    发明申请
    METHOD FOR PREPARING URANIUM CONCENTRATES BY FLUIDIZED BED PRECIPITATION, AND PREPARATION OF UO3 AND U3O8 BY DRYING/CALCINING SAID CONCENTRATES 有权
    通过流化床沉淀制备铀浓缩物的方法，以及通过干燥/计算酸浓度制备UO3和U3O8

    公开(公告)号：US20110212005A1

    公开(公告)日：2011-09-01

    申请号：US13127942

    申请日：2008-11-07

    申请人： Bruno Courtaud ,  Frederic Auger ,  Jacques Thiry

    发明人： Bruno Courtaud ,  Frederic Auger ,  Jacques Thiry

    IPC分类号： C22B60/02 ,  C01G56/00

    CPC分类号： C01G43/00 ,  C01G43/01 ,  C01P2004/03 ,  C01P2004/61 ,  C01P2006/10

    摘要： Method for producing a uranium concentrate in the form of solid particles, by precipitation from a uranium-containing solution using a precipitating agent, in a vertical reactor comprising a base, a top, a central part, an upper part, and a lower part, the solid particles of the uranium concentrate forming a fluidized bed under the action of a rising liquid current which circulates from the base towards the top of the reactor successively passing through the lower part, the central part and the upper part of the reactor, and which is created by introducing a liquid recycling current (flow) at the base of the reactor, said liquid recycling current being tapped at a first determined level (A) in the upper part of the reactor and sent back without settling to the base of the reactor, excess liquid being also evacuated via an overflow located at a second determined level (B) in the upper part of the reactor; a method in which the upper limit (C) of the fluidized bed of solid particles is controlled so that it is positioned at a level below the first and second determined levels.

    摘要翻译： 在包含基底，顶部，中心部分，上部和下部的立式反应器中，通过使用沉淀剂从含铀溶液中沉淀制备固体颗粒形式的铀浓缩物的方法， 铀浓缩物的固体颗粒在上升液流的作用下形成流化床，其从基体朝向反应器的顶部循环，依次通过反应器的下部，中心部分和上部，并且其中 是通过在反应器的底部引入液体循环电流（流动）而产生的，所述液体循环电流在反应器上部的第一确定水平（A）上被敲击，并在不沉降到反应器的底部 过多的液体也通过位于反应器上部的第二确定水平（B）的溢流抽真空; 控制固体颗粒的流化床的上限（C）使其位于低于第一和第二确定水平的水平的方法。

    Method for preparing uranium concentrates by fluidized bed precipitation, and preparation of UO3 and U3O8 by drying/calcining said concentrates
    2.
    发明授权
    Method for preparing uranium concentrates by fluidized bed precipitation, and preparation of UO3 and U3O8 by drying/calcining said concentrates 有权
    通过流化床沉淀制备铀浓缩物的方法，通过干燥/煅烧所述浓缩物制备UO 3和U 3 O 8

    公开(公告)号：US08628733B2

    公开(公告)日：2014-01-14

    申请号：US13127942

    申请日：2008-11-07

    申请人： Bruno Courtaud ,  Frederic Auger ,  Jacques Thiry

    发明人： Bruno Courtaud ,  Frederic Auger ,  Jacques Thiry

    IPC分类号： C01G43/00

    CPC分类号： C01G43/00 ,  C01G43/01 ,  C01P2004/03 ,  C01P2004/61 ,  C01P2006/10

    摘要： Method for producing a uranium concentrate in the form of solid particles, by precipitation from a uranium-containing solution using a precipitating agent, in a vertical reactor comprising a base, a top, a central part, an upper part, and a lower part, the solid particles of the uranium concentrate forming a fluidized bed under the action of a rising liquid current which circulates from the base towards the top of the reactor successively passing through the lower part, the central part and the upper part of the reactor, and which is created by introducing a liquid recycling current (flow) at the base of the reactor, said liquid recycling current being tapped at a first determined level (A) in the upper part of the reactor and sent back without settling to the base of the reactor, excess liquid being also evacuated via an overflow located at a second determined level (B) in the upper part of the reactor; a method in which the upper limit (C) of the fluidized bed of solid particles is controlled so that it is positioned at a level below the first and second determined levels.

    摘要翻译： 在包含基底，顶部，中心部分，上部和下部的立式反应器中，通过使用沉淀剂从含铀溶液中沉淀制备固体颗粒形式的铀浓缩物的方法， 铀浓缩物的固体颗粒在上升液流的作用下形成流化床，其从基体朝向反应器的顶部循环，依次通过反应器的下部，中心部分和上部，并且其中 是通过在反应器的底部引入液体循环电流（流动）而产生的，所述液体循环电流在反应器上部的第一确定水平（A）上被敲击，并在不沉降到反应器的底部 过多的液体也通过位于反应器上部的第二确定水平（B）的溢流抽真空; 控制固体颗粒的流化床的上限（C）使其位于低于第一和第二确定水平的水平的方法。