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1. 发明授权

US4379126A Process for recovering tungsten values from alkali solutions 失效
标题翻译：从碱溶液中回收钨值的工艺
公开(公告)号：US4379126A
公开(公告)日：1983-04-05
申请号：US292376
申请日：1981-08-13
申请人： Tai K. Kim , Joseph E. Ritsko , Martin B. MacInnis , Martin C. Vogt
发明人： Tai K. Kim , Joseph E. Ritsko , Martin B. MacInnis , Martin C. Vogt
IPC分类号： C01G39/02 , C01G41/00 , C22B3/28
CPC分类号： C22B3/0012 , C01G41/003 , C22B3/24 , Y02P10/234 , Y10S423/14
摘要： In a continuous process for producing ammonium tungstate from aqueous alkali metal tungstate solution according to an extraction process, the loaded organic extractant is cleaned after stripping by contacting with activated carbon for improving phase separation and decreasing the concentration of alkali metal.
摘要翻译：在根据提取方法从碱金属钨酸盐水溶液中生产钨酸铵的连续方法中，通过与活性炭接触来提纯负载的有机萃取剂，以提高相分离和降低碱金属的浓度。

2. 发明授权

US4369165A Recovery of tungsten values from alkali tungstate solutions by solvent extraction 失效
标题翻译：通过溶剂萃取从碱式钨酸盐溶液中回收钨值
公开(公告)号：US4369165A
公开(公告)日：1983-01-18
申请号：US292379
申请日：1981-08-13
申请人： Tai K. Kim , Martin B. MacInnis , Martin C. Vogt , Robert P. McClintic
发明人： Tai K. Kim , Martin B. MacInnis , Martin C. Vogt , Robert P. McClintic
IPC分类号： C01G41/00 , C22B3/28 , C22B3/40
CPC分类号： C22B3/0095 , C01G41/003 , C22B3/0012 , Y02P10/234
摘要： In a three component extraction system for producing ammonium tungstate from aqueous alkali metal tungstate from aqueous alkali metal tungstate solution, the stripping solution consists essentially of water and from about 5 to about 21 percent ammonium hydroxide at a pH of from about 12 to about 13 wherein the stripping is carried out by dispersing the aqueous ammonia solution in the loaded organic extractant.
摘要翻译：在由碱金属钨酸钠水溶液的碱金属钨酸盐水溶液制备钨酸铵的三组分提取系统中，汽提溶液基本上由水和约5至约21％的氢氧化铵组成，pH约为12至约13，其中通过将氨水溶液分散在负载的有机萃取剂中来进行汽提。

3. 发明授权

US4374099A Recovery of tungsten values from alkali tungstate solutions by solvent extraction 失效
标题翻译：通过溶剂萃取从碱式钨酸盐溶液中回收钨值
公开(公告)号：US4374099A
公开(公告)日：1983-02-15
申请号：US292377
申请日：1981-08-13
申请人： Tai K. Kim , Martin B. MacInnis , Robert P. McClintic , Martin C. Vogt
发明人： Tai K. Kim , Martin B. MacInnis , Robert P. McClintic , Martin C. Vogt
IPC分类号： C01G41/00
CPC分类号： C01G41/003
摘要： In a two component extraction system for producing ammonium tungstate from aqueous alkali metal tungstate solution, the stripping solution consists essentially of water and from about 5 to about 21 percent by weight ammonium hydroxide at a pH of from about 12 to 13 wherein the stripping is carried out by dispersing the aqueous ammonia solution in the loaded organic extractant.
摘要翻译：在用于由碱金属钨酸钠水溶液制备钨酸铵的双组分萃取系统中，汽提溶液基本上由水和约5至约21重量％的氢氧化铵组成，pH为约12至13，其中汽提被携带通过将氨水溶液分散在负载的有机萃取剂中。

4. 发明授权

US4261959A Process for extracting ferric iron from an aqueous solution 失效
标题翻译：从水溶液中提取三价铁的方法
公开(公告)号：US4261959A
公开(公告)日：1981-04-14
申请号：US105003
申请日：1979-12-18
申请人： Tai K. Kim , Martin B. MacInnis
发明人： Tai K. Kim , Martin B. MacInnis
IPC分类号： C01G49/00 , C22B3/26 , C01G49/10
CPC分类号： C01G49/0009 , C22B3/0021 , Y02P10/234
摘要： Ferric iron is removed from an aqueous chloride solution containing other cations by extracting ferric iron with a liquid organic extractant comprising a ketone having less than about eight carbon atoms for a sufficient period of time to extract ferric iron into the organic liquid extractant. The organic liquid extractant is separated from the aqueous chloride solution containing other cations and the ferric iron is stripped from the organic liquid.
摘要翻译：通过用含有少于约8个碳原子的酮的液体有机萃取剂萃取三价铁足够长的时间将三价铁萃取到有机液体萃取剂中，从含有其它阳离子的氯化水溶液中除去三价铁。将有机液体萃取剂与含有其它阳离子的氯化水溶液分离，并从有机液体中汽提出三价铁。

5. 发明授权

US4612182A Method of producing crystalline ammonium metatungstate 失效
标题翻译：生产结晶态偏钨酸铵的方法
公开(公告)号：US4612182A
公开(公告)日：1986-09-16
申请号：US704843
申请日：1985-02-25
申请人： Tai K. Kim , Martin B. MacInnis , Robert P. McClintic
发明人： Tai K. Kim , Martin B. MacInnis , Robert P. McClintic
IPC分类号： C01G41/00
CPC分类号： C01G41/00
摘要： A method is disclosed for producing crystalline ammonium metatungstate from ammonium paratungstate. The method involves heating the ammonium paratungstate at from about 100.degree. C. to about 250.degree. C. for from about 1 hour to about 8 hours to remove some ammonia and water, digesting a solution of the heated ammonium paratungstate in water at from about 80.degree. C. to about 100.degree. C. for from about 2 hours to about 6 hours at relatively constant volume while maintaining the pH of the slurry at from about 4.2 to about 3.0 by addition of ammonia as necessary to form a solution of ammonium metatungstate in water. The ammonium metatungstate solution is then evaporated to concentrate it. Any insoluble material is separated from the solution. Ammonium metatungstate is then crystallized from the resulting concentrated ammonium metatungstate solution.
摘要翻译：公开了一种从仲钨酸铵生产结晶态偏钨酸铵的方法。该方法包括将约100℃至约250℃的仲钨酸铵加热约1小时至约8小时以除去一些氨和水，在约80℃的水中将加热的仲钨酸铵溶液消化以相对恒定的体积进行约2小时至约6小时，同时通过根据需要加入氨将浆料的pH保持在约4.2至约3.0，以形成偏钨酸铵溶液水。然后将偏钨酸铵溶液蒸发浓缩。将任何不溶物质与溶液分离。然后从所得浓缩的偏钨酸铵溶液中结晶偏钨酸铵。

6. 发明授权

US4278642A Method for removing molybdenum from tungstate solutions by solvent extraction 失效
标题翻译：通过溶剂萃取从钨酸盐溶液中除去钼的方法
公开(公告)号：US4278642A
公开(公告)日：1981-07-14
申请号：US158670
申请日：1980-06-12
申请人： Martin B. MacInnis , Tai K. Kim
发明人： Martin B. MacInnis , Tai K. Kim
IPC分类号： C01G39/00 , C01G41/00 , C22B3/26 , C22B3/28 , C22B34/34
CPC分类号： C22B3/0016 , C01G39/003 , C01G39/006 , C01G41/003 , C01G41/006 , C22B3/0032 , C22B34/34 , Y02P10/234 , Y10S423/14
摘要： Disclosed is a process for removing molybdenum values from aqueous solutions containing tungsten values comprising sulfidizing said solution to an extent sufficient to convert substantially all of the molybdenum values to a thiomolybdate species, said sulfidizing being substantially less than the extent necessary to convert substantially all of said tungsten values to a thiotungstate species and contacting the resulting solution containing the thiomolybdate complex ion with a suitable amount of an organic extractant for a sufficient period of time to preferentially extract the thiomolybdate complex ion into the organic extractant, said organic extractant comprising an aromatic organic solvent and a quaternary ammonium compound of the formula R.sub.3 (CH.sub.3)N.sup.+ A.sup.-, wherein R is an alkyl group having from about 8 to 10 carbon atoms and A is an anion derived from a mineral acid.
摘要翻译：公开了一种从包含钨值的水溶液中除去钼值的方法，包括将所述溶液硫化至足以将基本上所有钼值转化为硫钼酸盐物质的程度，所述硫化作用基本上小于将基本上所有所述将钨值提供给钍钨酸盐物质，并将含有硫钼酸盐络合物离子的所得溶液与适量的有机萃取剂接触足够的时间以优先将硫钼酸盐配合物离子萃取到有机萃取剂中，所述有机萃取剂包含芳族有机溶剂和式R3（CH3）N + A-的季铵化合物，其中R是具有约8至10个碳原子的烷基，A是衍生自无机酸的阴离子。

7. 发明授权

US3947332A Preparation of heteropoly acids of tungsten and molybdenum 失效
标题翻译：钨和钼杂多酸的制备
公开(公告)号：US3947332A
公开(公告)日：1976-03-30
申请号：US477257
申请日：1974-06-07
申请人： Clarence D. Vanderpool , James C. Patton, Jr. , Tai K. Kim , Martin B. MacInnis
发明人： Clarence D. Vanderpool , James C. Patton, Jr. , Tai K. Kim , Martin B. MacInnis
IPC分类号： C01G39/00 , C01G41/00 , C25B1/22 , C25B1/24
CPC分类号： C25B1/22 , C01G39/003 , C01G39/006 , C01G41/00 , C01P2006/40 , C01P2006/80
摘要： Heteropoly acids of tungsten and molybdenum, such as tungstosilicic acid and molybdosilicic acid, are produced by first preparing an aqueous solution of an alkali metal tungstate or molybdate and an alkali metal salt of the hetero atom, and then removing the alkali metal cations from the solution by means of a cation exchange membrane under the influence of an applied electrical potential, whereby the reactive tungstate or molybdate and hetero species anions react to form the desired heteropoly acid.
摘要翻译：通过首先制备碱金属钨酸盐或钼酸盐的水溶液和杂原子的碱金属盐，然后从溶液中除去碱金属阳离子来制备钨和钼如钨硅酸和钼硅酸的杂多酸在施加的电势的影响下通过阳离子交换膜，由此反应性钨酸盐或钼酸盐和杂种阴离子反应形成所需的杂多酸。

8. 发明授权

US4759915A Process for extracting tungsten from alkali metal tungstate solutions 失效
标题翻译：从碱金属钨酸盐溶液中提取钨的方法
公开(公告)号：US4759915A
公开(公告)日：1988-07-26
申请号：US786453
申请日：1985-10-11
申请人： Tai K. Kim , Alan D. Douglas , Robert P. McClintic , Martin B. MacInnis
发明人： Tai K. Kim , Alan D. Douglas , Robert P. McClintic , Martin B. MacInnis
IPC分类号： C01G41/00 , C22B3/28
CPC分类号： C22B3/0012 , C01G41/003 , Y02P10/234
摘要： An improvement is disclosed in a process wherein tungsten values are extracted from an aqueous alkali metal tungstate solution by an organic extractant, and then stripped from the organic with an ammonia solution, the improvement being removing bromine from the major portion of the stripped organic and thereafter using at least a portion of the resulting bromine-free stripped organic to make up at least a portion of the organic extractant.
摘要翻译：在通过有机萃取剂从钨酸碱金属水溶液中提取钨值，然后用氨溶液从有机溶剂中提取钨值的改进是公开的，其改进在于从剥离的有机物的主要部分除去溴，此后使用至少一部分所得的无溴剥离的有机物构成至少一部分有机萃取剂。

9. 发明授权

US4288413A Separating molybdenum values from an aqueous solution containing tungsten by solvent extraction 失效
标题翻译：通过溶剂萃取从含钨的水溶液中分离钼值
公开(公告)号：US4288413A
公开(公告)日：1981-09-08
申请号：US158967
申请日：1980-06-12
申请人： Martin B. MacInnis , Tai K. Kim
发明人： Martin B. MacInnis , Tai K. Kim
IPC分类号： C01G39/00 , C01G41/00 , C22B3/28
CPC分类号： C22B3/0016 , C01G39/003 , C01G41/006 , Y02P10/234 , Y10S423/14
摘要： The process is described wherein molybdenum values are separated from an aqueous solution containing tungsten. The molybdenum is converted to a thiomolybdate ion and the resulting solution is contacted with a suitable amount of organic extractant for a sufficient period of time to preferentially extract the thiomolybdate. The organic extractant including the thiomolybdate is separated from the aqueous solution comprising the unextracted tungsten values. The molybdenum values are stripped from the separated organic extractant by contacting with an aqueous solution containing sufficient amount of an oxidizing agent suitable for oxidizing the thiomolybdate complex ion to the molybdate ion which in turn is soluble in the aqueous solution. The organic extractant is then recycled for extracting the thiomolybdate complex ion and the molybdate ion may be recovered from the aqueous solution by conventional methods.
摘要翻译：描述了其中钼值与含钨水溶液分离的方法。将钼转化成硫钼酸根离子，使所得溶液与适量的有机萃取剂接触足够的时间以优先提取硫钼酸盐。包括硫钼酸盐的有机萃取剂与包含未萃取的钨值的水溶液分离。通过与含有足够氧化硫钼酸盐配合物的氧化剂的水溶液与钼酸根离子接触而将钼值从分离的有机萃取剂中剥离，钼酸根离子又溶于水溶液中。然后将有机萃取剂再循环用于提取硫钼酸盐络合物离子，并且可以通过常规方法从水溶液中回收钼酸根离子。

10. 发明授权

US4612183A Method of producing crystalline ammonium metatungstate 失效
标题翻译：生产结晶态偏钨酸铵的方法
公开(公告)号：US4612183A
公开(公告)日：1986-09-16
申请号：US704992
申请日：1985-02-25
申请人： Tai K. Kim , Carl W. Boyer , Martin B. MacInnis , Donald H. Ennis
发明人： Tai K. Kim , Carl W. Boyer , Martin B. MacInnis , Donald H. Ennis
IPC分类号： C01G41/00
CPC分类号： C01G41/00
摘要： A method is disclosed for producing crystalline ammonium metatungstate from ammonium paratungstate. The method involves heating ammonium paratungstate in a multiple hearth furnace at from about 200.degree. C. to about 400.degree. C. to form a relatively uniformly heated ammonium paratungstate. A slurry of the heated ammonium paratungstate in water is then digested at from about 70.degree. C. to about 100.degree. C. for less than about 6 hours at relatively constant volume while maintaining the pH of the slurry at from about 4.2 to about 3.0 by the addition of ammonia as necessary to form a solution of ammonium metatungstate. The resulting ammonium metatungstate solution is then evaporated to a fraction of its original volume to concentrate it and any insolubles are removed. The ammonium metatungstate is then crystallized from the concentrated solution.
摘要翻译：公开了一种从仲钨酸铵生产结晶态偏钨酸铵的方法。该方法包括在约200℃至约400℃的多床炉中加热仲钨酸铵，形成相对均匀加热的仲钨酸铵。然后将加热的仲钨酸铵的浆液在约70℃至约100℃下以相对恒定的体积消化少于约6小时，同时通过以下方式将浆料的pH维持在约4.2至约3.0，通过根据需要添加氨以形成偏钨酸铵溶液。然后将所得的偏钨酸铵溶液蒸发至其原始体积的一部分以使其浓缩并除去任何不溶物。然后从浓缩溶液中结晶偏钨酸铵。

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