公开(公告)号：US4250155A

公开(公告)日：1981-02-10

申请号：US914289

申请日：1978-06-09

申请人： Anastasios P. Kouloheris ,  JoAnne LeFever

发明人： Anastasios P. Kouloheris ,  JoAnne LeFever

IPC分类号： C01B25/237 ,  C01B25/234 ,  C01B25/235 ,  C01B25/46 ,  C22B60/02 ,  C01B25/16

CPC分类号： C22B60/0243 ,  C01B25/235 ,  C01B25/461

摘要： A method of purifying phosphoric acid after solvent extraction to remove residual amounts of an immiscible organic carrier including contacting the phosphoric acid with a sorbent which sorbs or takes up the residual amount of organic carrier and separating the phosphoric acid from the organic carrier-laden sorbent. The method is especially suitable for removing residual organic carrier from phosphoric acid after solvent extraction uranium recovery.

摘要翻译： 在溶剂萃取后提纯磷酸以除去残留量的不混溶有机载体的方法，包括使磷酸与吸附剂接触，吸附剂或吸收剩余量的有机载体并从有机载体载体吸附剂中分离出磷酸。 该方法特别适用于在溶剂萃取铀回收后从磷酸中除去残留的有机载体。

公开(公告)号：US4225568A

公开(公告)日：1980-09-30

申请号：US009918

申请日：1979-02-06

申请人： Alain Leveque

发明人： Alain Leveque

IPC分类号： C01B25/234 ,  C01B25/46 ,  C01B25/16

CPC分类号： C01B25/461 ,  C01B25/462

摘要： An organic phase including both phosphoric acid and sulfuric acid is purified of sulfate ion content by countercurrently washing same with an aqueous liquid in an at least two-stage wash zone, the pH of which having been adjusted with an alkali metal or ammonium compound to a value greater than that as would exist if the washing were effected with the aqueous liquid alone, under the same conditions, and whereby there results a purified organic phase comprising both SO.sub.4 and P.sub.2 O.sub.5 in an amount by weight of SO.sub.4 to P.sub.2 O.sub.5 of less than 50 ppm.

摘要翻译： 包括磷酸和硫酸的有机相通过在至少两级洗涤区中的水性液体逆流洗涤来纯化硫酸根离子含量，所述至少两个阶段的洗涤区的pH用碱金属或铵化合物调节至 如果在相同条件下仅用水性液体进行洗涤即可存在，其结果是SO 4和P 2 O 5的纯化有机相的SO 4和P 2 O 5的重量比小于50ppm 。

公开(公告)号：US4196180A

公开(公告)日：1980-04-01

申请号：US881516

申请日：1978-02-27

申请人： Bernhard Wojtech ,  Klaus P. Ehlers ,  Wolfgang Scheibitz

发明人： Bernhard Wojtech ,  Klaus P. Ehlers ,  Wolfgang Scheibitz

IPC分类号： C01B25/46 ,  C01B25/22

CPC分类号： C01B25/461 ,  C01B25/462

摘要： Contaminated phosphoric acid, particularly wet-processed phosphoric acid, is purified by extracting it from its aqueous solution by means of an organic solvent, which is immiscible or partially miscible with water and in which phosphoric acid is soluble, separating the phosphoric acid being dissolved in the organic solvent from extraction residue, and recovering the phosphoric acid from the organic solution.The aqueous phosphoric acid is more particularly mixed in a reaction zone, in a ratio by volume within the range 1:0.3 to 1:30, with a solvent having a boiling point higher than that of water or higher than that of the resulting water solvent-azeotrope, the phosphoric acid/solvent-mixture is heated to temperatures between the boiling point of water or of the said azeotrope and that of the solvent until distillation of substantially all uncombined water originally present in the mixture, and residue and resulting anhydrous phosphoric acid solution in the organic solvent are separated.

摘要翻译： 污染的磷酸，特别是湿法处理的磷酸，通过与水不混溶或部分混溶并且其中可溶于磷酸的有机溶剂从其水溶液中提取而被纯化，将溶解的磷酸分离 来自萃取残余物的有机溶剂，并从有机溶液中回收磷酸。 磷酸水溶液在反应区域中以体积比在1:0.3至1:30的范围内更特别地混合，其中溶剂的沸点高于水或高于所得水溶剂的沸点 将该磷酸/溶剂混合物加热至沸点或沸点与所述共沸物和溶剂的沸点直到蒸馏出基本上所有未混合的水，最初存在于混合物中，残余物和得到的无水磷酸 分离有机溶剂中的溶液。

公开(公告)号：US4117092A

公开(公告)日：1978-09-26

申请号：US864158

申请日：1977-12-27

申请人： Klaus Beltz ,  Klaus Frankenfeld

发明人： Klaus Beltz ,  Klaus Frankenfeld

IPC分类号： B01D11/04 ,  C01B25/234 ,  C01B25/46 ,  C01B25/16

CPC分类号： C01B25/234 ,  B01D11/0492 ,  C01B25/46 ,  C01B25/461 ,  C01B25/462

摘要： There is disclosed a countercurrent multi-stage process for separating an organic solvent from a phosphoric acid solvent solution by the addition of an alkali material such that the ratio of Na.sub.2 O to P.sub.2 O.sub.5 in the water phase in each stage is from 0.45:1 to 0.90:1 whereby substantially all the organic solvent is recovered from the starting solution in the final stage of the extractor.

公开(公告)号：US09871245B2

公开(公告)日：2018-01-16

申请号：US14399233

申请日：2013-05-28

申请人： JOHNSON MATTHEY PUBLIC LIMITED COMPANY ,  Université de Montréal ,  LA CORPORATION DE L'ECOLE POLYTECHNIQUE DE MONTREAL

发明人： Michel Gauthier ,  Dean MacNeil ,  Joseph Wontcheu ,  Patrice Chartrand ,  Guoxian Liang

IPC分类号： H01M4/136 ,  H01M4/1397 ,  H01M4/04 ,  C01B25/46 ,  C01B25/45 ,  H01M4/58 ,  H01M4/36

CPC分类号： H01M4/136 ,  C01B25/45 ,  C01B25/461 ,  C01P2006/40 ,  H01M4/0454 ,  H01M4/1397 ,  H01M4/366 ,  H01M4/5825

摘要： There is provided a process for preparing a crystalline electrode material, the process comprising: providing a liquid bath comprising the electrode material in a melted state; and introducing a precursor of the electrode material into the liquid bath, wherein the electrode material comprises lithium, a metal and phosphate. There is also provided a crystalline electrode material, comprising lithium substituted by less than 0.1 atomic of Na or K; Fe and/or Mn, substituted by less than 0.1 atomic ratio of: (a) Mg, Ca, Al and B, (b) Nb, Zr, Mo, V and Cr, (c) Fe(III), or (d) any combinations thereof; and PO4, substituted by less than 20% atomic weight of an oxyanion selected from SO4, SiO4, BO4, P2O7, and any combinations thereof, the material being in the form of particles having a non-carbon and non-olivine phase on at least a portion of the surface thereof.

公开(公告)号：US20150360946A1

公开(公告)日：2015-12-17

申请号：US14409131

申请日：2013-06-19

申请人： EasyMining Sweden AB

发明人： Yariv Cohen ,  Patrik Enfält

IPC分类号： C01B25/46 ,  C05B11/10 ,  B01J19/24 ,  C01B25/28 ,  B01D11/04

CPC分类号： C01B25/462 ,  B01D9/0013 ,  B01D11/04 ,  B01J19/24 ,  B01J2219/00049 ,  B01J2219/24 ,  C01B25/28 ,  C01B25/461 ,  C05B7/00 ,  C05B11/10

摘要： An arrangement (100) for production of fully soluble, pure and well defined mono- or di-ammonium phosphates, comprises an extraction section (10), a stripping section (20) and end treatment arrangements (90). The extraction section performs a liquid-liquid extraction of phosphate between a feed liquid (1) comprising phosphoric acid and being essentially free from nitrate ions, and a solvent (5) having a solubility in water of less than 2%. The stripping section performs a liquid-liquid extraction of phosphate between solvent loaded with phosphate and a strip solution (4). The solvent depleted in phosphate is recirculated to the extraction section for further extraction of phosphate. The strip solution is an aqueous ammonium phosphate solution, wherein at least 80% of the ammonium phosphate is monoammonium phosphate and/or wherein the solvent is a water-immiscible alcohol. The end treatment arrangements comprise a source of ammonia (60), an adding arrangement (70), a cooling arrangement (50), a precipitate remover (40) and a recirculation system (80).

摘要翻译： 用于生产完全可溶的，纯的和明确定义的磷酸二氢铵或磷酸二铵的装置（100）包括萃取部分（10），汽提部分（20）和末端处理装置（90）。 提取部分在磷酸基本上不含硝酸根离子的进料液（1）和在水中的溶解度小于2％的溶剂（5）之间进行磷 - 液萃取。 汽提段在负载磷酸盐和带状溶液（4）的溶剂之间进行磷酸液体液体萃取。 将贫磷酸盐的溶剂再循环至提取部分以进一步提取磷酸盐。 带状溶液是磷酸铵水溶液，其中至少80％的磷酸铵是磷酸氢二铵和/或其中溶剂是与水不混溶的醇。 末端处理装置包括氨源（60），添加装置（70），冷却装置（50），沉淀物去除器（40）和再循环系统（80）。

公开(公告)号：US4820501A

公开(公告)日：1989-04-11

申请号：US162123

申请日：1988-02-29

申请人： Masaki Nakatani

发明人： Masaki Nakatani

IPC分类号： C01B25/237 ,  C01B25/235 ,  C01B25/46 ,  C01B25/16

CPC分类号： C01B25/235 ,  C01B25/461 ,  C01B25/462

摘要： A method for removing organic materials dissolved in purified phosphoric acid by decomposing it with hydrogen peroxide, characterized in that after the treatment with hydrogen peroxide, the purified phosphoric acid is contacted with reducing phosphorus compounds.

公开(公告)号：US4781905A

公开(公告)日：1988-11-01

申请号：US869192

申请日：1986-05-30

申请人： Jiang Yu-Ming ,  Su Yuan-Fu

发明人： Jiang Yu-Ming ,  Su Yuan-Fu

IPC分类号： C01B25/46 ,  C01B25/16

CPC分类号： C01B25/461

摘要： A process is developed for producing phosphoric acid and phosphates from wet-process phosphoric acid. The crude acid is extracted with a waterimmiscible solvent mixture consisting of mixed trialkyl phosphine oxide and a diluent, wherein about 2/3 P.sub.2 O.sub.5 in the crude acid is extracted into solvent mixture and the balance remains in the raffinate. Pure phosphoric acid or phosphates are produced by stripping the loaded solvent with appropriate aqueous phase and secondary calcium phosphate fertilizer is obtained by neutralizing the raffinate with calcium carbonate.

摘要翻译： 开发了一种从湿法磷酸生产磷酸和磷酸盐的工艺。 粗酸用与混合的三烷基氧化膦和稀释剂组成的水混溶性溶剂混合物萃取，其中将粗酸中的约2/3 P 2 O 5萃取到溶剂混合物中，余量保留在萃余液中。 通过用适当的水相汽提负载的溶剂来制备纯磷酸或磷酸盐，通过用碳酸钙中和萃余液获得二次磷酸钙肥料。

公开(公告)号：US4780295A

公开(公告)日：1988-10-25

申请号：US69991

申请日：1987-07-06

申请人： Jeffrey C. Dore ,  David P. Brochu ,  Richard E. Hall

发明人： Jeffrey C. Dore ,  David P. Brochu ,  Richard E. Hall

IPC分类号： C01B25/46 ,  C01B25/16

CPC分类号： C01B25/465 ,  C01B25/461

摘要： The invention is a process to purify a solution of phosphoric acid by removing transition metal impurities such as iron, chromium and vanadium. In the process a solution of phosphoric acid in an organic solvent which is substantially immiscible with water is contacted with an aqueous solution of a salt of an alkali metal of phosphoric acid. The phosphoric acid recovered following the contacting contains a substantially lesser content of transition metal impurities.

公开(公告)号：US4762692A

公开(公告)日：1988-08-09

申请号：US13885

申请日：1987-02-12

申请人： Klaus Beltz ,  Klaus Frankenfeld ,  Peter Ruschke ,  Gerhard Eich

发明人： Klaus Beltz ,  Klaus Frankenfeld ,  Peter Ruschke ,  Gerhard Eich

IPC分类号： C01G11/02 ,  C01B25/46 ,  C01B25/234

CPC分类号： C01B25/461 ,  C01B25/462

摘要： Disclosed is a process for the precipitation and separation of cadmium sulphide from the raffinates derived from phosphoric acid purification by treating the cadmium containing streams of the raffinates with a H.sub.2 S containing solvent phase in a mixing-settling apparatus, by separating the raffinate phase from the cadmium sulphide containing solvent phase and by separating the precipitated cadmium sulphide from the solvent phase. By operating this process it is possible to remove cadmium in a simple manner from the raffinates since their inherent properties don't influence the precipitation and separation of cadmium sulphide.

摘要翻译： 本发明公开了一种通过在混合沉淀装置中通过用含硫化氢溶剂相处理含有镉的萃余液的流，通过将萃余液相与镉分离而从硫酸镉纯化中提取的残渣中沉淀和分离硫化镉的方法 含硫化物溶剂相，并将沉淀的硫化镉与溶剂相分离。 通过操作该方法，可以以简单的方式从萃余液中除去镉，因为其固有的性质不影响硫化镉的沉淀和分离。