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公开(公告)号：US4175160A
公开(公告)日：1979-11-20
申请号：US917825
申请日：1978-06-22
CPC分类号： C09K11/02 , H01J29/225 , Y10T428/2991 , Y10T428/2998
摘要： The disposition of an array of color phosphor dots on a color cathode ray tube faceplate by conventional photo deposition techniques is facilitated by first coating the individual phosphor particles with polyvinyl alcohol modified with an amino acid such as glutamic or aspartic acid.
摘要翻译： 通过用氨基酸（如谷氨酸或天冬氨酸）改性的聚乙烯醇首先涂覆各个荧光体颗粒，便于通过常规的光沉积技术在彩色阴极射线管面板上配置彩色磷光体阵列。
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公开(公告)号：US3947555A
公开(公告)日：1976-03-30
申请号：US408493
申请日：1973-10-23
IPC分类号： C01B32/949 , C01B31/34
CPC分类号： C01B31/34
摘要： A process suitable for recovering refractory metal carbide values from contaminated uncemented refractory metal carbides containing an iron group metal comprises heating an admixture of the powders of the contaminated refractory metal carbides and glacial acetic acid to the boiling point of the admixture for at least about 30 minutes, the weight of the powders divided by the weight of the acid is less than 5, thereafter removing the resulting carbide solids from the acid and washing the solids with sufficient water to remove the residual acid and drying the solids.
摘要翻译： 适用于从含有铁族金属的被污染的未熔化的难熔金属碳化物中回收难熔金属碳化物值的方法包括将被污染的难熔金属碳化物和冰醋酸的粉末的混合物加热到混合物的沸点至少约30分钟 ，粉末的重量除以酸的重量小于5，此后从酸中除去所得的碳化物固体，并用足够的水洗涤固体以除去残留的酸并干燥固体。
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公开(公告)号：US3947332A
公开(公告)日：1976-03-30
申请号：US477257
申请日：1974-06-07
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。
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公开(公告)号：US06623807B2
公开(公告)日：2003-09-23
申请号：US09910156
申请日：2001-07-20
IPC分类号： B05D302
CPC分类号： C09K11/612
摘要： A method of increasing the color-stability of an electroluminescent phosphor which comprises the steps of forming the phosphor and then firing the formed phosphor in a vacuum in the presence of a material selected from the group of Eu, Ce, and Sm for a time sufficient to provide said increase in color-stability.
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25.发明授权
公开(公告)号：US6113808A
公开(公告)日：2000-09-05
申请号：US215481
申请日：1998-12-18
IPC分类号： C09K11/08 , C09K11/00 , C09K11/56 , C09K11/61 , C09K11/74 , H01J29/20 , H05B33/12 , H05B33/14 , C09K11/54
CPC分类号： C09K11/7414 , C09K11/612
摘要： An electroluminescent phosphor containing an effective amount of bismuth to increase the half-life of the phosphor compared to the half-life of the phosphor without the bismuth. The phosphor is produced by the method comprising the steps of preparing the electroluminescent phosphor; adding granular, elemental bismuth to the bottom of a quartz reaction vessel; covering the bismuth with a layer of quartz wool; placing the phosphor on top of the quartz wool; evacuating the reaction vessel to about 750-760 mm Hg and sealing the vessel; and heating the vessel to between about 500 to 700.degree. C. for about 24 to 72 hours.
摘要翻译： 含有有效量的铋以增加荧光体的半衰期而不含铋的荧光体的电致发光荧光体。 通过包括以下步骤的方法制造荧光体：制备电致发光荧光体; 将颗粒状元素铋添加到石英反应容器的底部; 用一层石英棉覆盖铋; 将荧光粉置于石英棉的顶部; 将反应容器抽空至约750-760mm Hg并密封容器; 并将容器加热至约500至700℃约24至72小时。
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公开(公告)号：US5788938A
公开(公告)日：1998-08-04
申请号：US658451
申请日：1996-06-05
CPC分类号： C01G41/00
摘要： A method is provided whereby tungsten values are recovered from ferrotungsten by completely oxidizing the ferrotungsten at high temperatures in an oxygen atmosphere followed by digestion with sodium hydroxide to form soluble sodium tungstate. The sodium tungstate is then purified by conventional means. The method may be used to recover at least about 90% of the tungsten values present in the ferrotungsten.
摘要翻译： 提供了一种方法，其中通过在氧气氛中高温下将铁钨完全氧化，然后用氢氧化钠消化形成可溶性钨酸钠，从钨铁中回收钨值。 然后通过常规方法纯化钨酸钠。 该方法可用于回收钨铁中存在的至少约90％的钨值。
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27.发明授权Process for recovering tungsten as an ammoniacal tungstate compound in which ammoniacal tungstate liquors are reclaimed 失效用于回收钨作为氨基钨酸盐化合物的方法，其中回收了氨基钨酸盐液体
公开(公告)号：US5417945A
公开(公告)日：1995-05-23
申请号：US795310
申请日：1991-11-14
申请人： Richard G. W. Gingerich , James N. Christini , Martin C. Vogt , Clarence D. Vanderpool , Michael J. Miller
发明人： Richard G. W. Gingerich , James N. Christini , Martin C. Vogt , Clarence D. Vanderpool , Michael J. Miller
IPC分类号： C01G41/00
CPC分类号： C01G41/003 , C01G41/00
摘要： A process for recovering tungsten as an ammoniacal tungstate which comprises reacting a tungsten containing material with sodium hydroxide to produce sodium tungstate and forming a first aqueous sodium tungstate solution therefrom, crystallizing sodium tungstate from the first aqueous sodium tungstate solution, dissolving the resulting sodium tungstate crystals in an aqueous medium to form a second aqueous sodium tungstate solution, extracting tungsten from the second aqueous sodium tungstate solution with an organic extracting agent wherein the extracting agent containing tungsten is capable of being stripped of the extracted tungsten by ammonia, and thereafter stripping the extracted tungsten from the organic extracting agent with ammonia to form an ammoniacal tungstate solution, crystallizing a portion of the tungsten contained in the ammoniacal tungstate solution to form a two phase system wherein an ammoniacal tungstate compound comprises the first phase and wherein the resulting mother liquor containing the balance of the contained tungsten comprises the second phase, and repeating the process using the mother liquor as at least a portion of the aqueous medium to dissolve the sodium tungstate crystals.
摘要翻译： 一种用于回收钨作为钨酸钨的方法，其包括使含钨材料与氢氧化钠反应以产生钨酸钠并从其中形成第一含水钨酸钠溶液，从第一钨酸钠水溶液中使钨酸钠结晶，将所得的钨酸钠晶体 在水性介质中形成第二钨酸钠水溶液，用有机萃取剂从第二钨酸钠水溶液中提取钨，其中含有钨的萃取剂能够用氨除去提取的钨，然后将提取的 钨从有机萃取剂中与氨反应形成一种氨基钨酸盐溶液，使一部分钨酸铵溶液中所含的钨结晶形成两相体系，其中氨基钨酸盐化合物包含第一相，其中所得的 含有所含钨的余量的母液包括第二相，并且重复使用母液作为至少一部分水性介质以溶解钨酸钠晶体的方法。
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公开(公告)号：US5015458A
公开(公告)日：1991-05-14
申请号：US504479
申请日：1990-04-04
CPC分类号： C01B17/902 , B01D61/52 , Y10S210/912 , Y10S423/02
摘要： A method is disclosed for removing iron from iron-contaminated sulfuric acid to render the sulfuric acid suitable for ion membrane processing which comprises contacting the iron-contaminated sulfuric acid with an oxidizing agent to oxidize essentially all of the iron to the +3 oxidation state, contacting the resulting iron-contaminated sulfuric acid containing oxidized iron with a complexing agent which can be citric acid, oxalic acid, and tartaric acid, with the amount of the complexing agent being sufficient to complex essentially all of the oxidized iron, and contacting the resulting iron-contaminated sulfuric acid containing the complexed iron with activated carbon to remove essentially all of the iron and produce a purified sulfuric acid solution.
摘要翻译： 公开了一种用于从铁污染的硫酸中除去铁以使硫酸适合于离子膜处理的方法，其包括将铁污染的硫酸与氧化剂接触以将基本上所有的铁氧化为+3氧化态， 使所得到的含铁氧化铁的硫酸与可以是柠檬酸，草酸和酒石酸的络合剂接触，其中络合剂的量足以使基本上所有的氧化铁络合，并使所得的 铁络合的硫酸含有复合铁与活性炭，以去除基本上所有的铁，并产生纯化的硫酸溶液。
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公开(公告)号：US4816069A
公开(公告)日：1989-03-28
申请号：US197560
申请日：1988-05-23
CPC分类号： C22C1/0433 , B22F9/02 , B22F9/04
摘要： A method for converting cobalt to cobalt powder is disclosed which comprises heating a starting mixture of cobalt and zinc in a non-reacting atomosphere at a first temperature of below the boiling point of zinc up to about 900.degree. C. in a non-reacting atmosphere for a length of time sufficient to cause the alloying of a portion of the zinc and cobalt, with the weight ratio of zinc to cobalt being less than about 10. The temperature of the resulting partially alloyed mixture is slowly raised to a second temperature of from about 900.degree. C. to about 960.degree. and is maintained for a time sufficient only to form a reaction product in which essentially all of the cobalt is alloyed with zinc and to keep the evaporation of zinc to a minimum. The reaction product is then heated at a pressure below atmospheric pressure at a third temperature of no greater than about 950.degree. C. for a time sufficient to evaporate essentially all of the zinc and produce a cobalt ingot which is pulverizable when cooled to room temperature.
摘要翻译： 公开了一种将钴转化为钴粉末的方法，该方法包括在非反应性气氛中，在低于沸点至少约900℃的第一温度下，在非反应性大气中加热钴和锌的起始混合物 一段时间足以引起一部分锌和钴的合金化，锌与钴的重量比小于约10.所得到的部分合金化混合物的温度缓慢升至第二温度 约900℃至约960℃，并保持足以仅形成反应产物的时间，其中基本上所有的钴与锌合金化并使锌的蒸发保持最小。 然后将反应产物在不大于约950℃的第三温度下在低于大气压的压力下加热足以蒸发基本上所有锌的时间，并产生当冷却至室温时可粉化的钴锭。
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公开(公告)号：US4690710A
公开(公告)日：1987-09-01
申请号：US793079
申请日：1985-10-31
CPC分类号： B22F9/22 , C22B23/0423 , C22B23/0461
摘要： A process is disclosed for producing pure cobalt metal powder. The process involves contacting a cobaltous salt with a sufficient amount of an alkaline earth halide in an aqueous solution at a sufficient temperature for a sufficient time to form a solution which is essentially cobaltous halide and a solid which consists essentially of a salt of the alkaline earth and the anion of the cobaltous salt. The cobaltous halide solution is removed from the solid and the ions in the solution are complexed with ammonia in the presence of a catalyst to form a cobaltic hexammine ion. The resulting solution is treated with an acid in the presence of halide ions to form a cobaltic hexammine halide precipitate which is removed from the resulting mother liquor and dissolved in an aqueous solution to form a relatively pure solution which is treated with a sufficient amount of a metallic hydroxide to form a cobalt containing precipitate which is reduced to cobalt metal.
摘要翻译： 公开了用于生产纯钴金属粉末的方法。 该方法包括将钴盐与足量的碱土卤化物在水溶液中在足够的温度下接触足够的时间以形成基本上为卤化钴和基本上由碱土金属盐组成的固体的溶液 和钴耳盐的阴离子。 将卤化钴溶液从固体中除去，并且在催化剂存在下，溶液中的离子与氨络合以形成钴六胺离子。 所得溶液在卤离子存在下用酸处理以形成钴六卤化物沉淀物，其从所得母液中除去并溶解在水溶液中以形成相对纯的溶液，该溶液用足量的 金属氢氧化物以形成还原成钴金属的含钴沉淀物。
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