公开(公告)号：US5019362A

公开(公告)日：1991-05-28

申请号：US423312

申请日：1989-10-18

Applicant: William J. Rourke ,  Samuel Natansohn

Inventor： William J. Rourke ,  Samuel Natansohn

IPC: C01F17/00

CPC classification number: C01F17/0006

Abstract: A process is disclosed for purifying scandium from an acid solution containing scandium and various impurities. The process involves mixing the acid solution with a chelating resin in the hydrogen form to from a slurry and packing the slurry in a short ion exchange column. The ion exchange column is rinsed with a mineral acid and the scandium is removed by passing diglycolic acid through the column. The diglycolic acid containing scandium is then passed through a chelating resin in the H form. When the scandium concentration in the effluent from the chelating resin reaches a preselected level the effluent of digylcolic acid and scandium is collected. Collection is stopped when the scandium concentration in the eluent falls below a preselected level. This collected eluent is passed through a strong cation exchange column where the scandium is collected. After rinsing the strong cation exchange column with deionized water, the scandium is removed from the column by passing a solution of ammonium nitrate through the strong cation exchange resin. The scandium is precipated from the ammonium nitrate by adding oxalic acid. The precipate of scandium oxalate is collected by filtration and rinsed. The precipate is calcined at approximately 975.degree. C. to form scandium oxide. This process is applicable to the recovery and purification of scandium from any acid soluble matrix.

Abstract translation: 公开了从含有钪和各种杂质的酸溶液中净化钪的方法。 该方法包括将酸溶液与氢形式的螯合树脂混合，从浆料中混合并将浆料填充在短的离子交换柱中。 离子交换柱用无机酸冲洗，通过使二甘醇酸通过柱除去钪。 然后将含二甘醇酸的钪通过H形式的螯合树脂。 当来自螯合树脂的流出物中的钪浓度达到预选水平时，收集二氯乙酸和钪的流出物。 当洗脱液中的钪浓度低于预选水平时，收集停止。 将该收集的洗脱液通过强阳离子交换柱，其中收集钪。 用去离子水冲洗强阳离子交换柱后，将硝酸铵溶液通过强阳离子交换树脂从柱中除去钪。 钪通过加入草酸从硝酸铵中沉淀出来。 通过过滤收集草酸钪的沉淀物并冲洗。 将沉淀物在约975℃下煅烧以形成氧化钪。 该方法适用于从任何酸溶性基质回收和纯化钪。

公开(公告)号：US4816233A

公开(公告)日：1989-03-28

申请号：US95367

申请日：1987-09-11

Applicant: William J. Rourke ,  Wen-Chao Lai ,  Samuel Natansohn

Inventor： William J. Rourke ,  Wen-Chao Lai ,  Samuel Natansohn

IPC: B01J39/18 ,  B01J45/00 ,  C01F17/00 ,  C22B59/00 ,  F02B75/02 ,  C01G17/00

CPC classification number: C01F17/0043 ,  C01F17/0006 ,  C22B3/42 ,  F02B2075/027 ,  Y02P10/234 ,  Y10S423/14

Abstract: A method of recovering quantitatively trace amounts of scandium from aqueous solutions containing large amounts of other metals consists of reducing any manganese and iron in the solution to the divalent states of manganese and iron. The solution is then adjusted to a pH from about 1.9 to about 2.1 and passed through a column of the ion exchange resin in the hydrogen form having an iminodiacetic acid functionality. The scandium is absorbed on the column and any base metals and rare earth metals which were also absorbed are removed by eluting with a dilute acid without removing the scandium. The scandium is subsequently removed from the column by eluting with a solution containing a chelating agent such as diglycolic acid. The scandium is then recovered from the solution by precipitation, filtering, washing, drying and calcined to the oxide.

公开(公告)号：US4374713A

公开(公告)日：1983-02-22

申请号：US269191

申请日：1981-06-01

Applicant: Samuel Natansohn ,  Gary Czupryna

Inventor： Samuel Natansohn ,  Gary Czupryna

IPC: C01G41/00 ,  C22B3/28 ,  C22B3/38 ,  C25C1/00 ,  C25C1/20 ,  C25C1/08

CPC classification number: C22B3/0055 ,  C01G41/003 ,  C22B3/0016 ,  C25C1/00 ,  C25C1/20 ,  Y02P10/234

Abstract: A process for cleanly separating tungsten and the coinage metals from alloys or mixtures thereof comprises electrowinning the coinage metal from an electrolyte solution which is maintained substantially free of tungsten contamination by contacting the electrolyte solution with an organic extractant to remove the tungsten. A preferred extractant solution comprises a quaternary alkyl ammonium salt or quaternary alkyl phosphonium salt dissolved in an inert organic solvent.

Abstract translation: 用于从合金或其混合物中干净地分离钨和铸币金属的方法包括通过使电解质溶液与有机萃取剂接触以除去钨而从维持基本上不含钨污染物的电解质溶液中电铸金属金属。 优选的萃取剂溶液包含溶解在惰性有机溶剂中的季烷基铵盐或季烷基鏻盐。

公开(公告)号：US4374008A

公开(公告)日：1983-02-15

申请号：US269192

申请日：1981-06-01

Applicant: Samuel Natansohn ,  Gary Czupryna

Inventor： Samuel Natansohn ,  Gary Czupryna

IPC: C01G41/00 ,  C25C1/00 ,  C25C1/08 ,  C25C1/20 ,  C25C1/22

CPC classification number: C25C1/20 ,  C01G41/003 ,  C22B3/42 ,  C25C1/00 ,  Y02P10/234

Abstract: A process for cleanly separating coinage metals from alloys of coinage metals and tungsten comprises electrowinning the coinage metal from an electrolyte solution which is contacted with an ion exchange resin to selectively remove the tungsten.

Abstract translation: 将造币金属与铸币金属和钨的合金清洁分离的方法包括从与离子交换树脂接触以选择性除去钨的电解液中电铸金属金属。

公开(公告)号：US4328191A

公开(公告)日：1982-05-04

申请号：US233401

申请日：1981-02-13

Applicant: Sophia R. Su ,  Samuel Natansohn

Inventor： Sophia R. Su ,  Samuel Natansohn

IPC: C01G39/00 ,  C22B3/28 ,  C22B7/00 ,  C22B34/34

CPC classification number: C01G39/003 ,  C01G39/00 ,  C22B3/0012 ,  C22B3/0016 ,  C22B3/24 ,  C22B3/42 ,  C22B34/34 ,  C22B34/345 ,  C22B7/009 ,  Y02P10/214 ,  Y02P10/23 ,  Y02P10/234

Abstract: A method of recovering molybdenum from the catalyst residue derived from the process of epoxidizing olefins is disclosed. The catalyst residue, in semi-solid form or as a solution diluted in an organic solvent, is contacted with an aqueous solution of an oxidizing agent such as hydrogen peroxide, nitric acid, or sodium hypochlorite to transfer the molybdenum to the aqueous solution. The molybdenum is thereafter isolated directly from the aqueous solution or, alternatively, from the aqueous solution following preconcentration by liquid-liquid or liquid-solid extraction.

Abstract translation: 公开了从由烯烃环氧化方法得到的催化剂残余物中回收钼的方法。 以半固体形式的催化剂残余物或以有机溶剂稀释的溶液与氧化剂如过氧化氢，硝酸或次氯酸钠的水溶液接触，将钼转移到水溶液中。 然后，钼从水溶液中直接分离，或者通过液 - 液或液 - 固萃取法预浓缩后从水溶液中分离出来。

公开(公告)号：US4278643A

公开(公告)日：1981-07-14

申请号：US186949

申请日：1980-09-15

Applicant: Samuel Natansohn ,  Sophia R. Su

Inventor： Samuel Natansohn ,  Sophia R. Su

IPC: C01G41/00

CPC classification number: C01G41/003 ,  C22B3/24 ,  Y02P10/234 ,  Y10S423/14

Abstract: In a resin sorption process for recovering tungsten from solutions containing high levels of contaminating boron by employing a resin copolymer of 8-hydroxyquinoline, a polyamine, resorcinol, and formaldehyde (HPRF resins), the improvement comprises a two step desorption of metal values from the loaded resin consisting of a first step of washing the loaded resin with a solution of a weakly acidic salt to remove a portion of the boron from the loaded resin, followed by a second step of washing the loaded resin with a solution of a weakly basic salt to remove a portion of the tungsten from the loaded resin, whereby the tungsten recovered is substantially free of contaminating boron.

Abstract translation: 在通过使用8-羟基喹啉，多胺，间苯二酚和甲醛（HPRF树脂）的树脂共聚物的用于从含有高含量的污染硼的溶液中回收钨的树脂吸附方法中，改进包括从 负载树脂包括第一步骤，用弱酸性盐的溶液洗涤负载的树脂以从负载的树脂中除去一部分硼，然后用弱碱性盐溶液洗涤负载的树脂的第二步骤 从负载的树脂中除去一部分钨，由此所回收的钨基本上不含污染的硼。