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    Uranium value leaching with ammonium carbonate and/or bicarbonate plus nitrate oxidant and optionally oxidation-catalytic metal compounds
    51.
    发明授权
    Uranium value leaching with ammonium carbonate and/or bicarbonate plus nitrate oxidant and optionally oxidation-catalytic metal compounds 失效
    用碳酸铵和/或碳酸氢盐加硝酸氧化剂和任选的氧化催化金属化合物浸出铀矿

    公开(公告)号：US4405567A

    公开(公告)日：1983-09-20

    申请号：US208717

    申请日：1980-11-20

    申请人： Paul R. Stapp

    发明人： Paul R. Stapp

    IPC分类号： C22B60/02

    CPC分类号： C22B60/0247

    摘要： In accordance with the present invention, uranium values are extracted from solid materials containing uranium in lower valence states than its hexavalent state comprising contacting the solid materials containing uranium with an alkaline leach solution containing the ionic species NH.sub.4.sup.+ and NO.sub.3.sup.- in an amount sufficient to convert at least a portion of the uranium in valence states lower than its hexavalent state to its hexavalent state. In another embodiment of the present invention, the aqueous alkaline leach solution is an aqueous solution of a carbonate selected from the group consisting of ammonium carbonate, ammonium bicarbonate and mixtures thereof. In a further embodiment, ionic species NO.sub.3.sup.31 is supplied by an alkaline nitrate. In yet another embodiment of the present invention, the aqueous alkaline leach solution additionally contains at least one catalytic compound of a metal selected from the group consisting of copper, cobalt iron nickel, chromium and mixtures thereof adapted to assure the presence of the ionic species Cu.sup.++, Co.sup.++, Fe.sup.+++, Ni.sup.++, Cr.sup.+++ and mixtures thereof, respectively, is present during the contacting of the solid materials containing uranium with the aqueous alkaline leach solution in an amount sufficient to catalyze the oxidation of at least a part of the uranium in valence states lower than its hexavalent state to its hexavalent state.

    摘要翻译： 根据本发明，从含有铀的固体物质中提取铀值比其六价态包括使含有铀的固体物质与含有离子种类NH4 +和NO3-的碱性浸提溶液接触，其量足以使其转化 至少一部分铀价态低于其六价态至其六价态。 在本发明的另一个实施方案中，含水碱性浸出溶液是选自碳酸铵，碳酸氢铵及其混合物的碳酸盐的水溶液。 在另一个实施方案中，离子物质NO331由碱式硝酸盐提供。 在本发明的另一个实施方案中，水性碱性浸出溶液另外含有至少一种选自铜，钴铁镍，铬及其混合物的金属的催化剂化合物，其适于确保离子物质Cu ++的存在 在含有铀的固体物质与碱性浸提液的水溶液接触期间，Co ++，Fe +++，Ni ++，Cr +++及其混合物分别存在，其量足以催化至少一部分铀的价态氧化 低于其六价态至其六价态。

    Process for solution mining of uranium ores
    52.
    发明授权
    Process for solution mining of uranium ores 失效
    铀矿开采方法

    公开(公告)号：US4302429A

    公开(公告)日：1981-11-24

    申请号：US15207

    申请日：1979-02-26

    申请人： Bernard C. Lawes ,  John C. Watts

    发明人： Bernard C. Lawes ,  John C. Watts

    IPC分类号： C22B60/02 ,  E21B43/28 ,  C01G43/00

    CPC分类号： C22B60/0247 ,  C22B60/0221 ,  C22B60/0278 ,  E21B43/28

    摘要： In a process for the solution mining of a uranium ore formation using an aqueous alkaline carbonate leaching solution containing hydrogen peroxide as oxidant, the solution is passed through the ore formation in the presence of an alkylidene-1,1-diphosphonic acid. Such an acid has been found to be unique in its capability for stabilizing the peroxide against decomposition in the presence of the uranium ore.

    摘要翻译： 在使用含有过氧化氢作为氧化剂的碱性碳酸盐水溶液的水溶液开采铀矿石地层的方法中，在亚烷基-1,1-二膦酸的存在下使溶液通过矿石形成。 已经发现，这种酸在其在铀矿存在下稳定过氧化物不会分解的能力是独一无二的。

    Catalyses of uranium oxidation
    53.
    发明授权
    Catalyses of uranium oxidation 失效
    铀氧化催化剂

    公开(公告)号：US4200337A

    公开(公告)日：1980-04-29

    申请号：US915647

    申请日：1978-06-15

    申请人： John F. Jackovitz ,  Earl A. Pantier

    发明人： John F. Jackovitz ,  Earl A. Pantier

    IPC分类号： C01G43/00 ,  C22B60/02 ,  E21B43/28 ,  E21C41/22 ,  E21C41/14 ,  C01G56/00

    CPC分类号： E21C41/16 ,  C01G43/00 ,  C22B60/0247 ,  E21B43/28 ,  Y02P10/212

    摘要： The oxidation of uranium is catalyzed with water-soluble copper or zinc chelates. An aqueous solution is prepared containing carbonate or bicarbonate ion, an oxidizer such as hydrogen peroxide or oxygen, and a water-soluble copper or zinc chelate which has at least two amino, carboxylic acid, or thiocarboxylic acid donor groups. The solution is pumped into an underground deposit of uranium. The water-soluble +4 state uranium is oxidized to the water-soluble +6 state which forms a complex with the carbonate ion. The solution is pumped to the surface and is recycled after precipitation of the uranium.

    摘要翻译： 铀的氧化用水溶性铜或锌螯合物催化。 制备含有碳酸盐或碳酸氢根离子的水溶液，氧化剂如过氧化氢或氧气，以及具有至少两个氨基，羧酸或硫代羧酸供体基团的水溶性铜或锌螯合物。 将溶液泵入地下的铀矿床。 水溶性+4态铀被氧化成与碳酸根离子形成络合物的水溶性+6状态。 将溶液泵送到表面，并在铀沉淀后再循环。

    Process for extracting uranium from its ores
    54.
    发明授权
    Process for extracting uranium from its ores 失效
    从其提取铀的方法

    公开(公告)号：US3740200A

    公开(公告)日：1973-06-19

    申请号：US3740200D

    申请日：1970-10-20

    申请人： UGINE KUHLMANN

    发明人： GAUTIER R

    IPC分类号： C01G43/00 ,  C22B60/02

    CPC分类号： C22B60/0247

    摘要： URANIM IS EXTRACTED FROM ITS ORE BY REACTION SAID ORE WITH AMMONIUM BISULFATE THEREBY FFORMING A COMPOSITION CONTAINING URANIUM SULFATE, EXTRACTING SAID SULFATE FROM THE COMPOSITION AND REGENERATING AND RECYCLING THE AMMONIUM BISULFATE FOR FURTHER USE IN LEACHING THE ORE.