公开(公告)号：US4432947A

公开(公告)日：1984-02-21

申请号：US398831

申请日：1982-07-16

申请人： Pierre Maurel

发明人： Pierre Maurel

IPC分类号： C01D1/04 ,  C01F7/06 ,  C01G39/02

CPC分类号： C01G39/02 ,  C01D1/04 ,  C01F7/06 ,  C01P2006/80

摘要： A process for obtaining molybdenum as a useful product from aqueous solutions to be purified, according to claim 1 of French patent No. 2 404 601, which contain, besides said molybdenum, alkali metal carbonate, sulphate, hydroxide or hydrogen carbonate and which may also contain uranium, and inorganic and/or organic impurities, said solutions being treated at a temperature which is at most equal to the boiling temperature by means of lime to convert the alkali metal carbonate into hydroxide and to precipitate the insoluble calcium salts formed, then separating and washing the first precipitate which essentially contains calcium carbonate, from an alkali metal hydroxide-enriched liquor, which is concentrated by evaporation at the same time as the washing liquor of the first precipitate, to produce an alkali metal hydroxide content which is at most equal to 50%, to produce a second precipitate formed by a mixture of alkali metal molybdate and sulphate, characterized in that said solid mixture is dispersed in an acid aqueous liquor which is heated at from 120.degree. C. to 250.degree. C. under pressure to cause precipitation of anhydrous Mo0.sub.3 which is subsequently separated from the mother liquor which essentially contains alkali metal sulphate.

摘要翻译： 根据法国专利No.2404601的权利要求1的从待纯化水溶液中获得钼作为有用产物的方法，除了所述钼之外，还含有碱金属碳酸盐，硫酸盐，氢氧化物或碳酸氢盐，并且还可以 含有铀和无机和/或有机杂质，所述溶液通过石灰在至多等于沸点温度的温度下处理，以将碱金属碳酸盐转化为氢氧化物并沉淀形成的不溶性钙盐，然后分离 并且从碱金属氢氧化物富集的液体中洗涤基本上含有碳酸钙的第一沉淀物，其与第一沉淀物的洗涤液同时蒸发浓缩，以产生最多相等的碱金属氢氧化物含量 至50％，以产生由碱金属钼酸盐和硫酸盐的混合物形成的第二沉淀物，其特征在于所述固体微粒 将其分散在酸性水溶液中，该液体在120℃加压至250℃，在压力下引起无水MoO 3的沉淀，其随后与基本上含有碱金属硫酸盐的母液分离。

公开(公告)号：US4576802A

公开(公告)日：1986-03-18

申请号：US519922

申请日：1983-08-03

申请人： Antoine Floreancig

发明人： Antoine Floreancig

IPC分类号： C01F7/50 ,  C01G43/00 ,  C22B60/02

CPC分类号： C22B60/0239 ,  C01F7/50 ,  C01G43/00

摘要： A method of dissolving impure uranium tetrafluoride in a hot state in a nitric acid solution in the presence of an aluminum compound. For the purpose of obtaining a uranyl nitrate solution which can easily be separated from the solid phase formed during treatment, the dissolving is carried out in two stages at an appropriate temperature. The first stage comprises introducing quantities of nitric acid and of the aluminum compound which are insufficient to dissolve the impure uranium tetrafluoride completely, and keeping the resultant suspension agitated for a period of at least 0.5 hour. The second stage comprises introducing quantities of nitric acid and of the aluminum compound which are at least sufficient to dissolve the uranium not dissolved in the first stage, while keeping the suspension agitated.

摘要翻译： 在铝化合物的存在下，在硝酸溶液中将不纯的四氟化铀溶解在热状态的方法。 为了获得可以容易地从处理过程中形成的固相分离的硝酸铀酰溶液，在适当的温度下分两个阶段进行溶解。 第一阶段包括不足以完全溶解不纯的四氟化铀的量的硝酸和铝化合物，并将得到的悬浮液搅拌至少0.5小时。 第二阶段包括将至少足以溶解不溶于第一阶段的铀的量的硝酸和铝化合物引入，同时保持悬浮液的搅拌。

公开(公告)号：US4342722A

公开(公告)日：1982-08-03

申请号：US200146

申请日：1980-10-24

申请人： Jacques Blum

发明人： Jacques Blum

IPC分类号： G21C7/06 ,  G21C7/00 ,  G21C7/10 ,  G21C7/04

CPC分类号： G21C7/10 ,  G21C7/005 ,  G21Y2002/104 ,  G21Y2004/30 ,  Y02E30/39

摘要： A control rod having a center of thermal neutron absorbing material is provided specifically for use within the core of a nuclear reactor, extending through the central zone of maximum flux density. The center is formed of a plurality of portions, normally three, arranged end to end and defining joins therebetween. A central one of said portions extends continuously through the zone of maximum flux density with the joins located outward of this zone.

摘要翻译： 提供具有热中子吸收材料中心的控制棒专门用于在核反应堆的核心内使用，延伸通过最大磁通密度的中心区域。 中心由多个部分（通常为三个）形成，端部到端部并且在它们之间限定连接。 所述部分的中心部分连续延伸穿过位于该区域外部的连接处的最大通量密度区域。

公开(公告)号：US4495159A

公开(公告)日：1985-01-22

申请号：US398832

申请日：1982-07-16

申请人： Pierre Maurel

发明人： Pierre Maurel

IPC分类号： C01D1/04 ,  C01F7/47 ,  C01G28/02 ,  C01G43/00

CPC分类号： C01F7/47 ,  C01D1/04 ,  C01F7/473 ,  C01G28/023 ,  C01P2006/80

摘要： A process for extracting arsenic from aqueous solution to be purified, in accordance with claim 1 of U.S. Pat. No. 2,404,601, which also contains alkali metal carbonate, sulphate, hydroxide or hydrogen carbonate, and which may also contain at least one of the metals vanadium, uranium and molybdenum, comprising caustification of said solutions by means of lime to convert the carbonates into alkali metal hydroxides, followed by separation of an alkali metal hydroxide-enriched liquor and a first precipitate essentially containing calcium carbonate which is subjected to a washing operation, concentration by evaporation of the mixture of the washing liquor of the first precipitate to produce a second precipitate which essentially comprises alkali metal sulphate, which is characterized in that, before the aqueous solution is caustified, the aqueous solution is treated by a magnesium compound in an amount at least equal to the stoichiometric amount required to cause precipitation of magnesium arsenate.

摘要翻译： 根据权利要求1所述的用于从要净化的水溶液中提取砷的方法。 还包含碱金属碳酸盐，硫酸盐，氢氧化物或碳酸氢盐，并且还可以含有钒，铀和钼中的至少一种金属，包括通过石灰将所述溶液沉淀以将碳酸盐转化为碱 金属氢氧化物，然后分离富含碱金属氢氧化物的液体和基本上含有碳酸钙的第一沉淀物，其进行洗涤操作，通过蒸发第一沉淀物的洗涤液的混合物浓缩以产生第二沉淀， 基本上包括碱金属硫酸盐，其特征在于，在水溶液被除去之前，水溶液用至少等于引起砷酸镁沉淀所需的化学计量的镁化合物处理。

公开(公告)号：US4381350A

公开(公告)日：1983-04-26

申请号：US97335

申请日：1979-11-26

申请人： Edouard Grimaud ,  Maurice Troussier

发明人： Edouard Grimaud ,  Maurice Troussier

IPC分类号： C08F8/22 ,  C08F8/20 ,  B01J41/08

CPC分类号： C08F8/22

摘要： A process for obtaining a dense ion-exchange anionic resin and the product so obtained. The resin is of the type based on a co-polymer of styrene and divinylbenzene. The process involves a liquid phase treatment comprising contacting the resin with bromide in a liquid phase and simultaneously charging the liquid phase with gaseous chlorine while in contact with the resin for reaction to provide a styrene divinylbenzene copolymer ion-exchange anionic resin containing bromine and chlorine groups.

摘要翻译： 一种获得致密离子交换阴离子树脂的方法和如此获得的产物。 树脂是基于苯乙烯和二乙烯基苯的共聚物的类型。 该方法包括液相处理，包括使树脂与液相中的溴化物接触，同时与液态物料接触，同时与树脂接触以进行反应以提供含溴和氯基团的苯乙烯二乙烯基苯共聚物离子交换阴离子树脂 。

公开(公告)号：US4381286A

公开(公告)日：1983-04-26

申请号：US271941

申请日：1981-06-09

申请人： Antoine Floreancig

发明人： Antoine Floreancig

IPC分类号： C22B60/02 ,  C01G43/00 ,  C01G39/00

CPC分类号： C22B60/026

摘要： The present invention relates to a process for the selective separation of uranium and molybdenum which are contained in an extract resulting from an amino solvent liquid-liquid extraction of a solution resulting from an attack on a molybdo-uraniferous ore by means of sulphuric acid, and which comprises re-extraction of the uranium in the presence of an oxidizing agent by means of an acid solution of an alkali metal chloride, followed by re-extraction of the molybdenum by means of an alkali metal carbonate solution. This process is characterized by using an oxidizing agent such as hydrogen peroxide, a small amount of which is added to the acid alkali metal chloride solution before the latter is brought into contact with the extract. This makes it possible to achieve selective separation of the uranium and molybdenum. This process can be used wherever molybdo-uraniferous ores are treated and where there is a requirement to produce a uranium concentrate which complies with the limits set in regard to the molybdenum content.

摘要翻译： 本发明涉及一种选择性分离铀和钼的方法，所述方法包括在由通过硫酸对钼 - 铀矿矿进行的溶液的液 - 液萃取的氨基溶剂萃取物中提取的提取物中， 其包括在氧化剂存在下，通过碱金属氯化物的酸溶液重新萃取铀，然后通过碱金属碳酸盐溶液重新萃取钼。 该方法的特征在于使用氧化剂如过氧化氢，其中少量加入到酸性碱金属氯化物溶液中，然后使其与萃取物接触。 这使得可以实现铀和钼的选择性分离。 该方法可用于处理钼矿石矿石的地方，并且需要生产符合钼含量设定限值的铀浓缩物。

公开(公告)号：US4363788A

公开(公告)日：1982-12-14

申请号：US130127

申请日：1980-03-13

申请人： Antoine Floreancig ,  Jean-Pierre Cuer

发明人： Antoine Floreancig ,  Jean-Pierre Cuer

IPC分类号： C01G39/00 ,  C22B3/26 ,  C22B3/28 ,  C22B3/40 ,  C22B60/02 ,  B01D11/02 ,  C01G43/00 ,  C01G56/00

CPC分类号： C22B3/0032 ,  C01G39/00 ,  C01G39/003 ,  C22B3/0012 ,  C22B3/0095 ,  C22B60/0252 ,  Y02P10/234

摘要： A process for separating by means of an organic agent the uranium and the molybdenum contained in an aqueous liquor originating from a sulphuric attack of an urano-molybdeniferous ore which involves placing the said attacking liquor in contact with an organic extraction solution containing at least one tertiary or secondary amine in an (amine)/(Mo) molar ratio of up to 0.8, separating the molybdenum-charged organic phase from the uranium-rich aqueous phase, treating the organic phase with an aqueous liquor containing at least one mineral agent in the form of alkaline and ammonium hydroxide and/or carbonates to form an aqueous solution which is concentrated in molybdate.

摘要翻译： 一种通过有机试剂分离铀和钼的方法，所述铀和钼含有源自乌拉维 - 钼矿石的硫酸侵蚀的含水液体，其涉及使所述攻击液与含有至少一个第三级的有机萃取溶液接触 或仲胺以（胺）/（Mo）摩尔比达到0.8，将富含铀的有机相与富含铀的水相分离，在含有至少一种矿物试剂的含水液体中处理有机相， 形式的碱性和氢氧化铵和/或碳酸盐形成浓缩在钼酸盐中的水溶液。

公开(公告)号：US4585626A

公开(公告)日：1986-04-29

申请号：US516965

申请日：1983-07-25

申请人： Antoine Floreancig

发明人： Antoine Floreancig

IPC分类号： C01B15/047 ,  C22B60/02 ,  C01F13/00

CPC分类号： C01B15/0475 ,  C22B60/0239 ,  C22B60/026

摘要： A process for making into useful products the uranium and rare earths contained in impure uranium tetrafluoride resulting from the recovery of uranium from phosphoric acid, comprising dissolving it in a hot condition in a nitric medium in the presence of an aluminum compound, treating the resulting solution with a solvent for extracting uranyl nitrate, which contains a phosphoric ester, and separating from the aqueous phase from which the uranium is removed, the solvent which is charged with uranyl nitrate to be made into a useful product, which provides that, in order to achieve easy separation of the aqueous phase from which the uranium has been removed, from the uranyl nitrate extraction solvent:(a) The operation of dissolution of UF.sub.4 is carried out in two steps at a suitable temperature, the first step comprising introducing insufficient amounts of nitric acid and the aluminum compound for complete dissolution of the impure uranium tetrafluoride and keeping the resulting suspension in an agitated condition for a period of time of at least 0.5 hour, and the second step comprising introducing amounts of nitric acid and the aluminum compound, which are at least sufficient to put into solution the uranium which was not dissolved in the first step, and while maintaining the suspension in an agitated condition; and(b) the uranyl nitrate is extracted by bringing into contact the aqueous medium resulting from the dissolution of UF.sub.4 and the uranyl nitrate extraction solvent containing the phosphoric ester.

摘要翻译： 一种制备有用产物的方法，其中包含在从磷酸中回收铀所产生的不纯的四氟化铀中的铀和稀土，包括在铝化合物的存在下将其溶解在硝酸介质中的热条件下，将所得溶液 用用于提取含有磷酸酯的硝酸铀酰的溶剂，并从其中除去铀的水相中分离出溶剂，其中加入硝酸铀酰以制成有用的产物，其规定为了 从硝酸铀酰提取溶剂中实现容易地分离从其中除去铀的水相;（a）UF4的溶解操作在合适的温度下分两步进行，第一步包括引入不足量的 硝酸和铝化合物完全溶解不纯的四氟化铀，并保持所得的悬浮液 n处于搅拌条件下至少0.5小时的时间段，第二步骤包括将硝酸和铝化合物的量加入至少足以使溶解在第一步骤中不溶解的铀的溶液中 同时在悬浮状态下保持悬浮状态; 和（b）通过与UF4的溶解和含有磷酸酯的硝酸铀酰硝酸盐提取溶剂接触而引起的硝酸铀酰被提取。

公开(公告)号：US4510122A

公开(公告)日：1985-04-09

申请号：US511478

申请日：1983-07-07

申请人： Antoine Floreancig

发明人： Antoine Floreancig

IPC分类号： C22B60/02 ,  C01G43/00

CPC分类号： C22B60/026

摘要： A process for extracting the uranium contained in phosphoric acid solutions by means of an extracting agent comprising an alkylpyrophosphoric acid, which comprises bringing into contact, in an agitated condition, the inorganic, phosphoric acid phase and an organic phase containing the extracting agent, thereby producing an emulsion, which is characterized in that, in an extraction unit comprising n stages in a cascade configuration, for each extraction stage, the emulsion is produced in a first step by simultaneously subjecting the two phases for a period of time T.sub.1 to an intense mechanical shearing action corresponding to a shearing coefficient of at least 5000 seconds.sup.-1 in order to multiply the contact surfaces for contact between said two phases, and then said emulsion in a second step is abruptly broke in a time T.sub.2, the sum of the times required for carrying out the two steps being at most 20 minutes.

摘要翻译： 一种通过包含烷基焦磷酸的提取剂提取磷酸溶液中所含的铀的方法，其包括在搅拌条件下使无机磷酸相和含有萃取剂的有机相接触，由此产生 一种乳液，其特征在于，在包括级联构型的n级的萃取单元中，对于每个萃取阶段，在第一步中通过将两相经过一段时间T1同时进行强力机械 对应于至少5000秒-1的剪切系数的剪切动作，以便使所述两相之间的接触的接触面倍增，然后在第二步骤中的所述乳液在时间T2内突然断裂，所需时间的总和 执行两个步骤至多20分钟。

公开(公告)号：US4485075A

公开(公告)日：1984-11-27

申请号：US448854

申请日：1982-12-07

申请人： Pierre Maurel

发明人： Pierre Maurel

IPC分类号： C01D1/20 ,  C01D1/28 ,  C01D1/32 ,  C01D7/00 ,  C01D7/06 ,  C01D7/07 ,  C01G28/00 ,  C01G28/02 ,  C01G39/00 ,  C22B3/44 ,  C22B30/04 ,  C22B34/22 ,  C22B34/34 ,  C22B60/02 ,  C01G39/06

CPC分类号： C22B30/04 ,  C01D1/20 ,  C01D1/28 ,  C01D1/32 ,  C01D7/00 ,  C01D7/06 ,  C01D7/07 ,  C01G28/00 ,  C01G28/023 ,  C22B3/24 ,  C22B3/44 ,  C22B34/22 ,  C22B34/34 ,  C22B60/0278 ,  Y02P10/234

摘要： A process for extracting arsenic from aqueous solutions containing alkali metal carbonate, sulfate and hydroxide or hydrogen carbonate, at least one metal selected from the group consisting of vanadium, uranium and molybdenum in the form of an alkali metal salt, and inorganic and/or organic impurities, comprising the steps of caustifying the solution with lime to convert the alkali metal carbonates into hydroxides to precipitate the insoluble calcium salts formed, concentrating the solution by evaporation of the effluent liquids originating from the caustification step to obtain a precipitate substantially comprising alkali metal sulfate wherein the caustification is performed in two steps, consisting of (a) treating the solutions with an amount of lime approximately equal to but less than the stoichiometric amount necessary to convert the alkali metal carbonates into hydroxides as a first precipitate, and (b) after separating and washing the first precipitate, treating the resulting liquor with at least the stoichiometric amount of lime necessary to precipitate the arsenic in solution and the carbonate ions still present. The process is well adapted to the treatments of the liquors originating from the alkaline attack of uraniferous ore.

摘要翻译： PCT No.PCT / FR82 / 00068 Sec。 371日期1982年12月7日 102（e）1982年12月7日PCT PCT卷号1982年4月8日PCT公布。 出版物WO82 / 03620 日期：1982年10月28日。一种从含有碱金属碳酸盐，硫酸盐和氢氧化物或碳酸氢盐的水溶液中提取砷的方法，至少一种选自钒，铀和钼的金属为碱金属盐 ，以及无机和/或有机杂质，包括以下步骤：用石灰将该溶液转化成氢氧化物以沉淀形成的不溶性钙盐，通过蒸发源自苛化步骤的流出液体来浓缩该溶液，以获得 基本上包含碱金属硫酸盐的沉淀物，其中以两个步骤进行苛化处理，其包括（a）用大约等于但小于将碱金属碳酸盐转化为氢氧化物所需的化学计量的量的石灰处理溶液作为第一 沉淀，和（b）分离和洗涤第一沉淀物后处理 使所得到的液体至少具有沉淀砷溶液中所需的化学计算量的石灰，并且碳酸根离子仍然存在。 该方法适用于源于铀矿矿石碱性侵蚀的液体的处理。