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CN106068242A 活化U3O8以使其转化为水合UO4的方法 有权

活化U3O8以使其转化为水合UO4的方法
摘要：
一种对U3O8进行活化以使该铀氧化物经与过氧化氢H2O2的反应而转化成水合UO4的方法，其中，所述方法涉及进行以下连续步骤：a)制备含有U3O8粉末和过氧化氢的水性悬浮液；b)使所述含有U3O8粉末和过氧化氢的水性悬浮液与臭氧接触，从而得到活化的U3O8粉末的水性悬浮液；c)可选地，从所述水性悬浮液分离所述活化的U3O8粉末。一种使U3O8转化为式UO4·nH2O的水合UO4的方法，其中，n为2或4，所述方法包括：至少一个步骤，在所述至少一个步骤中，将过氧化氢H2O2加入到在上述活化的方法的步骤b)结束时得到的活化的U3O8粉末的水性悬浮液中；或者将过氧化氢H2O2加入到通过使在上述活化的方法的步骤c)结束时得到的活化的U3O8粉末悬浮在水中所制备的水性悬浮液中。
摘要（英）：

An activation method for activating U3O8 with a view to converting said uranium oxide into hydrated UO4 by means of a reaction with hydrogen peroxide H2O2, which involves carrying out the following successive steps: a) preparing an aqueous suspension containing a U3O8 powder and hydrogen peroxide; b) bringing the aqueous suspension containing a U3O8 powder and hydrogen peroxide into contact with ozone, thereby obtaining an aqueous suspension of an activated U3O8 powder; c) optionally, separating the activated U3O8 powder from the aqueous suspension. A method for converting U3O8 into hydrated UO4 of formula UO4, nH2O in which n is 2 or 4, comprising a least a step of adding hydrogen peroxide H2O2 to the aqueous suspension of an activated U3O8 powder obtained at the end of step b) of the activation method, or to an aqueous suspension prepared by placing the activated U3O8 powder obtained at the end of step c) of the activation method in suspension in water.

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