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1. 发明授权

US3966873A Uranium complex recycling method of purifying uranium liquors 失效
标题翻译：铀浓缩铀复合物回收方法
公开(公告)号：US3966873A
公开(公告)日：1976-06-29
申请号：US411886
申请日：1973-11-01
申请人： Leonard Elikan , Ward L. Lyon , Parameshwaran S. Sundar
发明人： Leonard Elikan , Ward L. Lyon , Parameshwaran S. Sundar
IPC分类号： B01D11/04 , C22B3/00 , C22B3/20 , C22B60/02 , C01G43/00 , C01G43/02
CPC分类号： C22B60/026 , Y02P10/212
摘要： Uranium is separated from contaminating cations in an aqueous liquor containing uranyl ions. The liquor is mixed with sufficient recycled uranium complex to raise the weight ratio of uranium to said cations preferably to at least about three. The liquor is then extracted with at least enough non-interfering, water-immiscible, organic solvent to theoretically extract about all of the uranium in the liquor. The oganic solvent contains a reagent which reacts with the uranyl ions to form a complex soluble in the solvent. If the aqueous liquor is acidic, the organic solvent is then scrubbed with water. The organic solvent is stripped with a solution containing at least enough ammonium carbonate to pecipitate the uranium complex. A portion of the uranium complex is recycled and the remainder can be collected and calcined to produce U.sub.3 O.sub.8 or UO.sub.2.
摘要翻译：铀与含有铀酰离子的含水液体中的污染阳离子分离。将该液体与足够的再循环铀配合物混合以提高铀与所述阳离子的重量比优选至少约3。然后用至少足够的无干扰，水不混溶的有机溶剂萃取液体，以理论上提取酒中所有的铀。有机溶剂含有与铀酰离子反应形成可溶于溶剂的络合物的试剂。如果含水液体是酸性的，则用水洗涤有机溶剂。有机溶剂用含有至少足够的碳酸铵的溶液汽提，以捣固铀配合物。铀络合物的一部分被再循环，其余部分可被收集并煅烧以产生U3O8或UO2。

2. 发明授权

US3966872A Coupled cationic and anionic method of separating uranium 失效
标题翻译：分离铀的偶联阳离子和阴离子方法
公开(公告)号：US3966872A
公开(公告)日：1976-06-29
申请号：US411889
申请日：1973-11-01
申请人： Parameshwaran Sundar , Leonard Elikan , Ward L. Lyon
发明人： Parameshwaran Sundar , Leonard Elikan , Ward L. Lyon
IPC分类号： B01D11/04 , C01G43/00 , C22B3/00 , C22B3/26 , C22B60/02 , B01D11/00
CPC分类号： C22B60/026 , Y02P10/212
摘要： Uranium is separated from contaminating metal ions in an aqueous feed liquor containing the uranyl ion. The liquor is extracted with a first, non-interfering, waterimmiscible, organic solvent containing a reagent which reacts with the uranyl ion to form a complex soluble in the organic solvent. The organic solvent is scrubbed with water if necessary, then stripped with a stripping liquor of an aqueous sulfuric acid liquor having a pH of about 0.5 to about 6 containing a reducing ion or an aqueous carbonate solution having a pH of about 8 to about 9. If the sulfuric acid liquor is used the stripped uranous ion is oxidized and the sulfuric acid liquor is diluted to prevent the precipitation of a uranium complex. The stripping liquor is extracted with an amine liquor comprising a second, noninterfering, water-immiscible, organic solvent and a tertiary or quaternary amine. The amine liquor is stripped with an ammonium carbonate solution to precipitate a uranium complex. The uranium complex is filtered off and may be calcined to produce U.sub.3 O.sub.8 or UO.sub.2.
摘要翻译：在含有铀酰离子的含水进料液中，铀与污染金属离子分离。液体用含有与铀酰离子反应的试剂形成可溶于有机溶剂的络合物的第一种，非干扰性的水混溶性有机溶剂萃取。如果需要，用水洗涤有机溶剂，然后用含有还原离子或约8至约9的pH的碳酸水溶液的pH为约0.5至约6的硫酸水溶液的汽提液汽提。如果使用硫酸液体，则汽提的尿素离子被氧化，硫酸液体被稀释以防止铀配合物沉淀。汽提液用包含第二，非干扰，水不混溶的有机溶剂和叔胺或季胺的胺液萃取。用碳酸铵溶液汽提胺液以沉淀铀配合物。滤出铀配合物，并将其煅烧生成U3O8或UO2。

3. 发明授权

US4292278A Purification of wet process phosphoric acid as a pretreatment step in the recovery of uranium 失效
标题翻译：纯化湿法磷酸作为回收铀的预处理步骤
公开(公告)号：US4292278A
公开(公告)日：1981-09-29
申请号：US13700
申请日：1979-02-21
申请人： Leonard Elikan , Regis R. Stana , Robert W. Ritchey
发明人： Leonard Elikan , Regis R. Stana , Robert W. Ritchey
IPC分类号： C01B25/235 , C22B60/02
CPC分类号： C22B60/026 , C01B25/235
摘要： A metal containing acidic solution, also containing humic acid impurities and contaminants, is purified by contacting the acidic solution with a scrubbing agent consisting essentially of a metal extractant and from about 50 vol.% to about 90 vol.% of a hydrocarbon, where the scrubbing agent interacts with impurities and contaminants in the acidic solution to form a sludge phase which is removed and a purified acid phase which can be fed into a metal recovery process.
摘要翻译：通过使酸性溶液与基本上由金属萃取剂和约50vol％至约90vol％的烃组成的洗涤剂接触来纯化含有腐殖酸杂质和污染物的含金属酸性溶液，其中洗涤剂与酸性溶液中的杂质和污染物相互作用，形成污泥相，其被除去，并且可以将其进料到金属回收过程中。

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