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1.发明授权
公开(公告)号：US4588573A
公开(公告)日：1986-05-13
申请号：US602036
申请日：1984-04-19
摘要： Potassium chloride and sulfuric acid are reacted in a recycled aqueous solution in the stoichiometric ratio required for potassium sulfate production. Hydrogen chloride produced by the reaction of the potassium chloride and sulfuric acid is evaporated in admixture with water or in anhdrous form. The resulting solution is cooled to crystallize a potassium sulfate salt, preferably potassium bisulfate. The potassium sulfate salt is separated from the mother liquor and the mother liquor is recycled to the reaction step. The potassium sulfate salt is dissolved in an aqueous solution and sequentially decomposed to produce potassium sulfate and a mother liquor rich in sulfuric acid. The mother liquor rich in sulfuric acid is concentrated and recycled to the reaction step.
摘要翻译： 氯化钾和硫酸在循环水溶液中以硫酸钾生产所需的化学计量比进行反应。 通过氯化钾和硫酸的反应产生的氯化氢与水混合或以无水形式蒸发。 将所得溶液冷却以使硫酸钾盐，优选硫酸氢钾结晶。 从母液中分离硫酸钾盐，将母液循环至反应步骤。 将硫酸钾盐溶解在水溶液中并依次分解产生硫酸钾和富含硫酸的母液。 将富含硫酸的母液浓缩并再循环至反应步骤。
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公开(公告)号：US4490336A
公开(公告)日：1984-12-25
申请号：US267473
申请日：1981-05-27
申请人： Ralph E. Worthington , Alex Magdics
发明人： Ralph E. Worthington , Alex Magdics
IPC分类号： B01D11/04 , C01B25/238 , C01G20060101 , C01G43/00 , C22B60/02
CPC分类号： C22B60/026 , Y02P10/212
摘要： A process is described for the recovery of tetravalent uranium from wet-process phosphoric acid utilizing an alkyl pyrophosphoric acid extractant or the like. After extracting the tetravalent uranium from wet-process acid, iron is stripped from the pregnant extractant into an oxalic acid stripping solution and then the tetravalent uranium is stripped from the pregnant extractant into an oxalate stripping solution. The oxalate stripping solution is an aqueous solution of an alkali metal or ammonium oxalate. The barren extractant is recycled for contacting with fresh wet-process acid. The uranium is oxidized and then precipitated in the oxalate stripping solution. The precipitated solids are separated from the solution, and the uranium is dried to a UO.sub.3 product.
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3.发明授权
公开(公告)号：US4652431A
公开(公告)日：1987-03-24
申请号：US238555
申请日：1981-02-26
申请人： Ralph E. Worthington , Alex Magdics
发明人： Ralph E. Worthington , Alex Magdics
CPC分类号： C22B60/026 , Y02P10/212
摘要： A process is described for the recovery of uranium from wet-process phosphoric acid utilizing an alkyl pyrophosphoric extractant. The extractant also contains a modifier for retaining the alkyl pyrophosphoric acid in solution in an essentially water-immiscible organic diluent during stripping. After extracting the uranium from wet-process acid, the APPA extractant is treated with an oxidizing agent such as hydrogen peroxide and the uranium stripped into an alkaline stripping solution. The alkaline stripping solution is an aqueous solution of an alkali metal or ammonium carbonate or hydroxide. The barren extractant is recycled for contacting with fresh wet-process acid. The uranium and any ferric iron present is precipitated in the stripping solution. The uranium is dissolved in an aqueous solution such as an aqueous solution of ammonium uranyl tricarbonate (AUT), any precipitated ferric solids are separated from the solution, and the uranium is reprecipitated, separated, dried and calcined to a U.sub.3 O.sub.8 product.
摘要翻译： 描述了使用烷基焦磷酸提取剂从湿法磷酸回收铀的方法。 萃取剂还含有一种改性剂，用于在汽提期间将烷基焦磷酸在溶液中保持在基本上与水不混溶的有机稀释剂中。 从湿法酸提取铀后，用氧化剂如过氧化氢处理APPA萃取剂，将铀汽提到碱性汽提溶液中。 碱性剥离溶液是碱金属或碳酸铵或氢氧化物的水溶液。 贫瘠的萃取剂被再循环用于与新鲜的湿法酸接触。 铀和任何存在的三价铁在汽提溶液中沉淀。 将铀溶解在诸如碳酸铀铵（AUT）的水溶液的水溶液中，将任何沉淀的铁固体与溶液分离，并将铀再沉淀，分离，干燥并煅烧成U3O8产物。
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公开(公告)号：US4325918A
公开(公告)日：1982-04-20
申请号：US071657
申请日：1979-08-31
IPC分类号： C22B60/02 , C01G43/00 , C01B25/237
CPC分类号： C22B60/026 , C22B60/0265
摘要： Uranium in wet-process phosphoric acid in the tetravalent state is extracted with an alkylphenyl acid phosphate extractant. The uranium in the pregnant extractant is then oxidized to the hexavalent state and stripped with a phosphoric acid stripping solution. Hydrolysis of the extractant is decreased by decreasing the proton concentration of the extractant which results from acidic impurities, e.g., sulfuric acid and fluorosilicic acid, originally present in the wet-process phosphoric acid. The proton concentration of the extractant is reduced indirectly by treating the phosphoric acid strip solution (1) with reagents which react with the acidic impurities to form water and an insoluble precipitate which is removed from the stripping solution; (2) with reagents to neutralize the acidic impurities in the stripping solution; or (3) by passing the stripping solution through a suitable ion exchange column.
摘要翻译： 在四价态的湿法磷酸中的铀用烷基苯基酸式磷酸盐提取剂萃取。 然后将妊娠提取剂中的铀氧化至六价状态，并用磷酸剥离溶液剥离。 萃取剂的水解通过降低最初存在于湿法磷酸中的酸性杂质（例如硫酸和氟硅酸）产生的萃取剂的质子浓度而降低。 通过用与酸性杂质反应形成水的试剂和从剥离溶液中除去的不溶性沉淀物处理磷酸带状溶液（1）间接地降低了萃取剂的质子浓度; （2）用试剂中和脱溶液中的酸性杂质; 或（3）通过使汽提溶液通过合适的离子交换柱。
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公开(公告)号：US20090221417A1
公开(公告)日：2009-09-03
申请号：US12156919
申请日：2008-06-05
申请人： Alex Magdics , Anna Michalski
发明人： Alex Magdics , Anna Michalski
IPC分类号： B01J38/64
CPC分类号： C01G53/10 , C01G1/00 , Y02P20/584
摘要： A process is provided for recycling a catalyst slurry comprising an organic material and a solid catalyst having a metal component disposed on a support. The process comprises contacting the catalyst slurry with an inorganic acid, reacting the inorganic acid with the metal component to form an aqueous metal salt solution phase, and an organic material phase, and separating the support from at least one of the organic material phase and the aqueous metal salt solution phase.
摘要翻译： 提供了一种方法，用于循环包含有机材料和固定催化剂的催化剂浆料，所述催化剂浆料具有设置在载体上的金属组分。 该方法包括使催化剂浆料与无机酸接触，使无机酸与金属组分反应形成金属盐水溶液相和有机物相，并将载体与有机物相和 金属盐水溶液相。
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公开(公告)号：US4554139A
公开(公告)日：1985-11-19
申请号：US618142
申请日：1984-06-07
申请人： Ralph E. Worthington , Alex Magdics
发明人： Ralph E. Worthington , Alex Magdics
摘要： A process for producing K.sub.2 SO.sub.4 from potassium chloride salts, calcium sulfate salts and another sulfate source wherein syngenite is formed and then decomposed with mineral acid to produce crystalline K.sub.3 H(SO.sub.4).sub.2. The K.sub.3 H(SO.sub.4).sub.2 crystals are recrystallized to produce K.sub.2 SO.sub.4 crystals.
摘要翻译： 一种从氯化钾盐，硫酸钙盐和另一种硫酸盐源生产K 2 SO 4的方法，其中形成顺式元素，然后用无机酸分解以产生结晶K 3 H（SO 4）2。 将K3H（SO4）2晶体重结晶以产生K 2 SO 4晶体。
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7.发明授权Selective removal of chromium, nickel, cobalt, copper and lead cations from aqueous effluent solutions 失效从含水流出液中选择性去除铬，镍，钴，铜和铅阳离子
公开(公告)号：US4956154A
公开(公告)日：1990-09-11
申请号：US166079
申请日：1988-03-09
申请人： Alex Magdics , Donald B. Stain
发明人： Alex Magdics , Donald B. Stain
IPC分类号： C01G3/00 , C01G21/00 , C01G37/00 , C01G51/00 , C01G53/00 , C02F1/26 , C02F9/00 , C22B3/28 , C22B3/40
CPC分类号： C02F9/00 , C01G21/003 , C01G3/003 , C01G37/003 , C01G51/003 , C01G53/003 , C02F1/26 , C22B3/0012 , C22B3/0095 , C02F2101/20 , Y02P10/234 , Y10S423/14
摘要： Aqueous effluent solutions containing metal cations may be treated with an extractant comprising an organophosphinic acid, a di-2-ethylhexyl phosphoric acid and/or an aliphatic amine to selectively separate chromium, nickel, cobalt, copper and lead cations from the aqueous solution. Typical extraction techniques include liquid-liquid extraction employing either mixer settlers or columns, liquid membrane extraction and selective supported membrane extraction.
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8.发明授权
公开(公告)号：US4652432A
公开(公告)日：1987-03-24
申请号：US267672
申请日：1981-05-27
申请人： Ralph E. Worthington , Alex Magdics
发明人： Ralph E. Worthington , Alex Magdics
CPC分类号： C22B60/026 , Y02P10/212
摘要： A process is described for the recovery or uranium from wet-process phosphoric acid utilizing an alkyl pyrophosphoric extractant. The extractant also contains a modifier for retaining the alkyl pyrophosphoric acid ester in solution in an essentially water-immiscible organic diluent during stripping. After extracting the uranium from wet-process acid, the APPA extractant is treated with an oxidizing agent such as hydrogen peroxide and the uranium stripped into an alkaline stripping solution. The alkaline stripping solution is an aqueous solution of an alkali metal or ammonium carbonate unsaturated in uranium. The barren extractant is recycled for contacting with fresh wet-process acid. Any ferric iron present is precipitated in the stripping solution and then separated from the solution. The uranium is precipitated, separated, dried and calcined to a U.sub.3 O.sub.8 product.
摘要翻译： 描述了使用烷基焦磷酸提取剂从湿法磷酸回收或铀的方法。 萃取剂还含有一种改性剂，用于在汽提期间将烷基焦磷酸酯保留在基本上与水不混溶的有机稀释剂中的溶液中。 从湿法酸提取铀后，用氧化剂如过氧化氢处理APPA萃取剂，将铀汽提到碱性汽提溶液中。 碱性剥离溶液是在铀中不饱和的碱金属或碳酸铵的水溶液。 贫瘠的萃取剂被再循环用于与新鲜的湿法酸接触。 存在的任何三价铁沉淀在剥离溶液中，然后与溶液分离。 铀沉淀，分离，干燥并煅烧成U3O8产物。
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9.发明授权Process for producing K.sub.3 H(SO.sub.4).sub.2 crystals and potassium sulfate crystals 失效生产K3H（SO4）2晶体和硫酸钾晶体的方法
公开(公告)号：US4554151A
公开(公告)日：1985-11-19
申请号：US536378
申请日：1983-09-27
摘要： A process for producing K.sub.2 SO.sub.4 from potassium chloride salts, calcium sulfate salts and another sulfate source wherein syngenite is formed and then decomposed with mineral acid to produce crystalline K.sub.3 H(SO.sub.4).sub.2. The K.sub.3 H(SO.sub.4).sub.2 crystals are recrystallized to produce K.sub.2 SO.sub.4 crystals.
摘要翻译： 一种从氯化钾盐，硫酸钙盐和另一种硫酸盐源生产K 2 SO 4的方法，其中形成顺式元素，然后用无机酸分解以产生结晶K 3 H（SO 4）2。 将K3H（SO4）2晶体重结晶以产生K 2 SO 4晶体。
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10.发明授权Concentrated sulphuric acid treatment of an alkylphenyl acid phosphate extractant 失效浓硫酸处理烷基苯基酸式磷酸盐萃取剂
公开(公告)号：US4385037A
公开(公告)日：1983-05-24
申请号：US150683
申请日：1980-05-16
CPC分类号： C22B60/026 , C22B3/0087 , Y02P10/234
摘要： Uranium in wet-process phosphoric acid in the tetravalent state is extracted with an alkylphenyl acid phosphate extractant comprising a mixture of mono- and di(alkylphenyl) esters of orthophosphoric acid. The pregnant extractant is stripped with a suitable stripping solution, and the barren extractant recycled to the extractant step. At least a portion of the recycled extractant is treated with concentrated sulphuric acid to remove organic and inorganic impurities including alkylphenol present in the barren extractant as a result of hydrolysis from the mixture of mono- and di-(alkylphenyl) esters of orthophosphoric acid to regenerate the extractant.
摘要翻译： 在四价态的湿法磷酸中的铀用包含正磷酸的单 - 和二（烷基苯基）酯的混合物的烷基苯基酸式磷酸盐提取剂萃取。 将怀孕的萃取剂用合适的汽提溶液剥离，并将贫瘠萃取剂再循环至萃取剂步骤。 至少一部分循环的萃取剂用浓硫酸处理以除去存在于贫瘠萃取剂中的有机和无机杂质，这些杂质是由正磷酸的单 - 和二 - （烷基苯基）酯的混合物水解而再生的 萃取剂。
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