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公开(公告)号：US4684401A
公开(公告)日：1987-08-04
申请号：US861884
申请日：1986-05-12
CPC分类号： C22B5/12 , B22F1/0048 , B22F9/22 , C22B23/021 , C22B34/32 , Y10S75/953
摘要： A chromium-cobalt alloy fine powder is disclosed which consists essentially of spheres with the chromium and cobalt being relatively uniformly distributed throughout the particles of the powder. The process for producing the powder is disclosed. The process involves firing a relatively uniform admixture consisting essentially of anhydrous cobalt (II) chloride and chromium (III) chloride in a furnace in a hydrogen atmosphere at a first temperature of at least about 400.degree. C. and below the sublimation temperature of chromium (III) chloride for a time sufficient to reduce essentially all of the cobalt (II) chloride to cobalt metal and to reduce essentially all of the chromium (III) chloride to chromium (II) chloride. The temperature is elevated to a second temperature of at least about 750.degree. C. and below the sublimation temperature of chromium (II) chloride. The elevation is done by raising the temperature in increments of about 100.degree. C. and holding at the elevated temperature until the evolution of HCl gas ceases. The first reduced mixture is fired at the second temperature for a time sufficient to to reduce essentially all of the chromium (II) chloride to chromium metal without causing appreciable melting of the cobalt metal, to form the alloy powder which is then cooled in a non-oxidizing atmosphere.
摘要翻译： 公开了一种铬钴合金细粉末，其基本上由具有相对均匀分布在粉末颗粒中的铬和钴的球体组成。 公开了制造粉末的方法。 该方法包括在氢气氛中的炉中，在至少约400℃的第一温度和低于铬的升华温度（1）的温度下，在熔炉中焙烧基本上由无水氯化钴（II）和氯化铬（III）组成的相对均匀的混合物 III）氯化物的时间足以将氯化钴（II）基本上全部还原成钴金属，并将氯化物基本上全部还原成氯化铬（II）。 将温度升高至至少约750℃并低于氯化铬（II）的升华温度的第二温度。 升高通过以约100℃的增量升高温度并保持在升高的温度直到HCl气体的释放停止。 将第一种还原的混合物在第二温度下烧制足以将氯化铬（II）全部还原成铬金属的时间，而不引起钴金属明显的熔化，形成合金粉末，然后将其冷却成非金属 氧化气氛。
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公开(公告)号：US4840775A
公开(公告)日：1989-06-20
申请号：US107079
申请日：1987-10-13
申请人： Eric F. Husted , Judith A. Ladd
发明人： Eric F. Husted , Judith A. Ladd
CPC分类号： C22B23/02 , C01G51/04 , C01P2006/80
摘要： A method is disclosed for purifying cobaltic hydroxide of sodium and chloride which involves firing the cobaltic hydroxide at a temperature of from about 180.degree. C. to about 850.degree. C. to remove essentially all of the water and to release sodium from the crystal matrix of the cobaltic hydroxide, slurrying the dried cobaltic hydroxide in a deionized water solution which contains a sufficient amount of an ionic compound to prevent the peptization of the cobaltic hydroxide, to solublize essentially all of the chloride and a greater portion of the sodium than would otherwise be solubilized without the firing step, and removing the purified cobaltic hydroxide from the resulting liquor.
摘要翻译： 公开了一种用于纯化钠和氯化钴的氢氧化钴的方法，该方法包括在约180℃至约850℃的温度下焙烧氢氧化钴，以除去基本上所有的水并将钠从晶体基质中释放出来 将氢氧化钴，将干燥的氢氧化钴在含有足够量的离子化合物的去离子水溶液中制浆，以防止氢氧化钴的胶溶，从而使碱性物质基本上全部溶解，否则将比其它方式 在没有烧制步骤的情况下溶解，并从所得到的液体中除去纯化的氢氧化钴。
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3.发明授权Process for recovering chromium and other metal values from chromium bearing material 失效从铬轴承材料回收铬和其他金属值的工艺
公开(公告)号：US4798708A
公开(公告)日：1989-01-17
申请号：US157756
申请日：1988-02-16
申请人： Judith A. Ladd , Michael J. Miller
发明人： Judith A. Ladd , Michael J. Miller
IPC分类号： C01G1/00 , C01G37/00 , C01G39/00 , C01G41/00 , C22B7/00 , C22B21/00 , C22B23/00 , C22B25/06 , C22B34/32 , C22B34/34 , C22B34/36
CPC分类号： C01G39/003 , C01G37/00 , C01G41/003 , C22B21/0023 , C22B23/005 , C22B23/0407 , C22B25/06 , C22B3/24 , C22B34/32 , C22B34/34 , C22B34/36 , C22B7/006 , Y02P10/228 , Y02P10/234 , Y10S210/913
摘要： A process is disclosed for recovering metals from chromium bearing material comprising one or more or the metals of cobalt, nickel, molybdenum, tungsten, iron, tin, aluminum. The process comprises atomizing the material to produce a flowable powder which is then fused in an oxidizing atmosphere with sufficient alkali metal hydroxide at a temperature sufficient to form a nonmagnetic fused material in which the chromium, tungsten and molybdenum are present as water soluble salts. The resulting fused material is then slurried with a sufficient amount of water to dissolve the water soluble compounds. The pH is adjusted to from about 9.2 to about 9.6 with an acid to allow insolubles to form which contain any cobalt, and nickel and the major portion of any iron, tin and aluminum followed by separating the insolubles from the resulting first liquor. The pH of the first liquor is adjusted to 0 to 2 with an acid and methyl alcohol is then added to it in an amount sufficient to reduce the chromium to the trivalent state. Activated carbon is then added in an amount sufficient to form a carbon-containing suspension wherein essentially all of any tungsten and molybdenum contained therein are adsorbed by the carbon, followed by separating the carbon-tungsten-molybdenum from the resulting second liquor, the pH of which is adjusted to about 5.0 to 8.5 with a base to form a precipitate containing essentially all of the chromium, followed by separating this precipitate from the resulting spent liquor.
摘要翻译： 公开了一种用于从包含一种或多种或含有钴，镍，钼，钨，铁，锡，铝的金属的铬轴承材料中回收金属的方法。 该方法包括使材料雾化以产生可流动的粉末，然后将其在足够的碱金属氢氧化物的氧化气氛中熔融，该温度足以形成非磁性熔融材料，其中铬，钨和钼作为水溶性盐存在。 然后将所得的熔融材料用足量的水浆化以溶解水溶性化合物。 用酸将pH调节至约9.2至约9.6以允许不溶物形成，其含有任何钴，镍和任何铁，锡和铝的主要部分，随后将不溶物与所得第一液体分离。 用酸将第一液体的pH调节至0至2，然后以足以将铬还原成三价态的量加入甲醇。 然后以足以形成含碳悬浮液的量加入活性炭，其中其中所含的任何钨和钼基本上全部被碳吸附，然后从所得第二液体中分离碳 - 钨 - 钼，pH 其用碱调节至约5.0至8.5，以形成基本上含有所有铬的沉淀，然后将该沉淀物与所得的废液分离。
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公开(公告)号：US4966760A
公开(公告)日：1990-10-30
申请号：US403078
申请日：1989-09-05
申请人： Judith A. Ladd , Joseph E. Ritsko
发明人： Judith A. Ladd , Joseph E. Ritsko
摘要： A method for recovering chromium from chromium-bearing material which comprises heating the material which can contain any one or combination of Co, Ni, Fe, Mo, and W with solid alkali metal hydroxide in an oxidizing atmosphere at 600.degree. C.-1000.degree. C. to form a fused material containing water soluble compounds of Cr, Mo, and W contained therein. The fused material is cooled and contacted with water to form a leach solution and a residue. The leach solution is adjusted to a pH of from about 5-8 with sulfuric acid, and a water soluble calcium salt is added. The chromium-rich liquor is then adjusted to a pH of 1-3 with sulfuric acid. Sodium metabisulfite is added to the chromium-rich liquor to reduce the chromium to the trivalent state after which the pH is adjusted to 5-8 with a base to form a precipitate of essentially all of the chromium.
摘要翻译： 一种从含铬材料中回收铬的方法，包括在600℃-1000℃的氧化气氛中加热可以含有Co，Ni，Fe，Mo和W中的任何一种或组合的固体碱金属氢氧化物的材料 以形成含有其中所含的Cr，Mo和W的水溶性化合物的熔融材料。 将熔融材料冷却并与水接触以形成浸出溶液和残余物。 用硫酸将浸出溶液调节至约5-8的pH，并加入水溶性钙盐。 然后用硫酸将富铬液体调至1-3。 将偏亚硫酸氢钠加入富铬液中以将铬还原成三价状态，之后用碱将pH调节至5-8，以形成基本上所有的铬的沉淀物。
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5.发明授权
公开(公告)号：US4718996A
公开(公告)日：1988-01-12
申请号：US903804
申请日：1986-09-04
CPC分类号： C25C5/02 , C01F17/0006 , C01G45/02 , C22B3/0068 , C22B3/08 , C22B34/36 , C22B47/00 , C22B59/00 , C01P2006/80 , Y02P10/234
摘要： A process is disclosed for recovering tungsten, scandium, iron, and manganese from tungsten bearing material. The process involves digesting the material in sufficient sulfuric acid at a sufficient temperature for a sufficient time in the presence of a reducing agent to form a digestion solution containing the major portion of the scandium, iron, and manganese, and a digestion residue containing the major portion of the tungsten, separating the digestion solution from the digestion residue and extracting essentially all of the scandium from the solution with an organic consisting essentially of an extracting agent which is a dialkyl phosphoric acid which is present in an amount sufficient to extract essentially all of the scandium without extracting appreciable amounts of iron and manganese, and the balance an essentially aromatic solvent. The scandium containing organic is removed from the raffinate and stripped of the scandium with an aqueous ammonium carbonate solution which is separated from the stripped organic. The pH of the raffinate is adjusted to at least about 2 with a base and electrolyzed to remove the major portion of the iron as iron powder, which is separated from the resulting electrolyzed solution which contains the major portion of the manganese.
摘要翻译： 公开了从含钨材料中回收钨，钪，铁和锰的方法。 该方法包括在足够的温度下在足够的温度下将物质在还原剂存在下消化足够的时间以形成含有主要部分钪，铁和锰的消化溶液，以及含有主要部分的消化残余物 将消解溶液与消化残余物分离，并用基本上由萃取剂组成的有机物萃取基本上所有的钪，所述萃取剂是二烷基磷酸，其存在量足以提取基本上所有的 钪没有提取可观量的铁和锰，余量基本上是芳族溶剂。 将含有有机物的钪从残液中除去，并用与汽提的有机物分离的碳酸铵水溶液汽提钪。 使用碱将萃余液的pH调节至至少约2，并进行电解以除去作为铁粉末的铁的主要部分，其与含有主要部分锰的所得电解溶液分离。
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6.发明授权
公开(公告)号：US4624703A
公开(公告)日：1986-11-25
申请号：US821932
申请日：1986-01-24
IPC分类号： C01F17/00 , C01G45/02 , C22B3/08 , C22B3/38 , C22B34/36 , C22B47/00 , C22B59/00 , C25C5/02 , C22B3/00
CPC分类号： C01F17/0006 , C01G45/02 , C22B3/0068 , C22B3/08 , C22B34/36 , C22B47/00 , C22B59/00 , C25C5/02 , C01P2006/80 , Y02P10/234
摘要： A process is disclosed for recovering tungsten, scandium, iron, and manganese from tungsten bearing material. The process involves digesting the material in sufficient sulfuric acid at a sufficient temperature for a sufficient time in the presence of a reducing agent to form a digestion solution containing the major portion of the scandium, iron, and manganese, and a digestion residue containing the major portion of the tungsten, separating the digestion solution from the digestion residue and extracting essentially all of the scandium from the solution with an organic consisting essentially of an extracting agent which is a dialkyl phosphoric acid which is present in an amount sufficient to extract essentially all of the scandium without extracting appreciable amounts of iron and manganese, and the balance an essentially aromatic solvent. The scandium containing organic is removed from the raffinate and stripped of the scandium with an aqueous ammonium carbonate solution which is separated from the stripped organic. The pH of the raffinate is adjusted to at least about 2 with a base and electrolyzed to remove the major portion of the iron as iron powder, which is separated from the resulting electrolyzed solution which contains the major portion of the manganese.
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7.发明授权
公开(公告)号：US4718995A
公开(公告)日：1988-01-12
申请号：US903940
申请日：1986-09-05
CPC分类号： C22B59/00 , C01F17/0006 , C01G45/1214 , C22B3/0012 , C22B3/08 , C22B34/36 , C22B47/00 , Y02P10/234
摘要： A process is disclosed for recovering scandium from a tungsten bearing material containing tungsten, iron manganese and scandium. The process involves digesting the material in an aqueous solution selected from the group consisting of a saturated solution of sulfur dioxide and a sulfuric acid solution containing an additional reducing agent at a sufficient temperature for a sufficient time to form a digestion solution containing the major portion of the scandium, iron, and manganese, and a digestion solid containing the major portion of the tungsten which is separated from the digestion solution. The major portion of the scandium is extracted from the digestion solution with an organic consisting essentially of an extracting agent which is essentially a mixture of alkyl primary amines which are present in an amount sufficient to extract the major portion of the scandium without extracting appreciable amounts of iron and manganese, and the balance an essentially aromatic solvent. After separation of the scandium containing organic from the raffinate, the organic is stripped of the scandium with hydrochloric acid which is then separated from the stripped organic. In an optional additional steps, iron is recovered by adjusting the pH of the raffinate to precipitate the major portion of the iron and manganese which is separated from the resulting liquor. A sufficient amount of chlorine gas is contacted with an aqueous slurry of the precipitate at a sufficient temperature for a sufficient time to form a manganese containing solution containing the major portion of the manganese which was in the precipitate and a solid containing the major portion of the iron which was in the precipitate.
摘要翻译： 公开了从含有钨，铁锰和钪的含钨材料回收钪的方法。 该方法包括在足够温度下将选自二氧化硫饱和溶液和含有另外还原剂的硫酸溶液的水溶液中的材料消化足够的时间以形成含有主要部分的消化液 钪，铁和锰，以及含有与消解溶液分离的钨的主要部分的消解固体。 钪的主要部分从消解溶液中提取，其中有机物基本上由提取剂提取，所述萃取剂基本上是烷基伯胺的混合物，其以足以提取主要部分钪的量存在，而不提取可观量的 铁和锰，余量为基本芳香族溶剂。 从萃余液中分离含钪的有机物后，用盐酸汽提有机物，然后与汽提的有机物分离。 在可选的附加步骤中，通过调节萃余液的pH以回收从所得液体中分离的铁和锰的主要部分来回收铁。 在足够的温度下，将足够量的氯气与沉淀物的含水浆料接触足够的时间以形成含有主要部分在沉淀中的锰的含锰溶液和含有主要部分的固体 处于沉淀中的铁。
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公开(公告)号：US4668483A
公开(公告)日：1987-05-26
申请号：US861683
申请日：1986-05-12
CPC分类号： C22B34/32 , C01G37/006 , C22B23/005 , C22B34/34 , C22B34/36
摘要： A process is disclosed for recovering chromium from a chromium bearing material containing cobalt, molybdenum, and tungsten. The process involves roasting the material and alkali metal compound at a temperature of at least about 400.degree. C. for a sufficient time to react the alkali metal compound with the material and form a reacted mixture containing essentially all of the chromium, molybdenum, and tungsten as alkali salts. The reacted mixture is water leached to dissolve the alkali salts and form a leach solution containing essentially all of the chromium, molybdenum, and tungsten, and a leach solid containing essentially all of the cobalt. After separation of the leach solution from the leach solid, the pH of the leach solution is adjusted to from about 0.5 to about 3.0 with an acid and a sufficient amount of a reducing agent is added to reduce essentially all of the chromium to the trivalent state. A precipitating agent is added to precipitate essentially all of the molybdenum and tungsten values while leaving essentially all of the reduced chromium values in the mother liquor, while the pH is maintained at from about 0.5 to about 3.0. The precipitate is separated from the mother liquor. A sufficient amount of ammonium sulfate is added to this mother liquor to precipitate essentially all of the chromium contained therein.
摘要翻译： 公开了从含有钴，钼和钨的含铬材料中回收铬的方法。 该方法包括在至少约400℃的温度下焙烧材料和碱金属化合物足够的时间以使碱金属化合物与材料反应，并形成基本上含有所有铬，钼和钨的反应混合物 作为碱盐。 反应的混合物是水浸出以溶解碱金属盐并形成含有基本上所有的铬，钼和钨的浸提溶液，以及含有基本上所有钴的浸出固体。 在浸出溶液从浸出固体中分离后，用酸将浸出溶液的pH调节至约0.5至约3.0，并加入足量的还原剂以将基本上所有的铬还原成三价态 。 加入沉淀剂以沉淀基本上所有的钼和钨的值，同时留下母液中基本上所有的还原铬值，同时将pH保持在约0.5至约3.0。 将沉淀物与母液分离。 向该母液中加入足够量的硫酸铵以沉淀其中所含的所有铬。
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9.发明授权
公开(公告)号：US4626280A
公开(公告)日：1986-12-02
申请号：US838482
申请日：1986-01-24
CPC分类号： C22B59/00 , C01F17/0006 , C01G45/1214 , C01G49/02 , C22B3/0012 , C22B3/08 , C22B34/36 , C22B47/00 , Y02P10/234
摘要： A process is disclosed for recovering tungsten, iron, and manganese from tungsten bearing material. The process involves digesting the material in a sulfur dioxide solution at a sufficient temperature for a sufficient time to form a digestion solution containing the major portion of the scandium, iron, and manganese, and a digestion solid containing the major portion of the tungsten which is separated from the digestion solution. The major portion of the scandium is extracted from the digestion solution with an organic consisting essentially of an extracting agent which is essentially a mixture of alkyl primary amines which are present in an amount sufficient to extract the major portion of the scandium without extracting appreciable amounts of iron and manganese, and the balance an essentially aromatic solvent. After separation of the scandium containing organic from the raffinate, the organic is stripped of the scandium with hydrochloric acid which is then separated from the stripped organic. The raffinate is adjusted to a pH of at least about 3.5 with a base to precipitate the major portion of the iron and manganese which is separated from the resulting liquor. A sufficient amount of chlorine gas is contacted with an aqueous slurry of the precipitate at a sufficient temperature for a sufficient time to form a manganese containing solution containing the major portion of the manganese which was in the precipitate and a solid containing the major portion of the iron which was in the precipitate.
摘要翻译： 公开了从含钨材料中回收钨，铁和锰的方法。 该方法包括在足够的温度下将二氧化硫溶液中的材料消化足够的时间以形成含有主要部分钪，铁和锰的消解溶液，以及含有主要部分钨的消解固体， 与消化液分离。 钪的主要部分从消解溶液中提取，其中有机物基本上由提取剂提取，所述萃取剂基本上是烷基伯胺的混合物，其以足以提取主要部分钪的量存在，而不提取可观量的 铁和锰，余量为基本上为芳族溶剂。 从萃余液中分离含钪的有机物后，用盐酸汽提有机物，然后与汽提的有机物分离。 将萃余液用碱调节至至少约3.5的pH，以沉淀与所得液体分离的铁和锰的主要部分。 在足够的温度下，将足够量的氯气与沉淀物的含水浆料接触足够的时间以形成含有主要部分在沉淀中的锰的含锰溶液和含有主要部分的固体 处于沉淀中的铁。
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10.发明授权
公开(公告)号：US5196580A
公开(公告)日：1993-03-23
申请号：US259494
申请日：1988-10-17
申请人： Judith A. Ladd , Michael J. Miller
发明人： Judith A. Ladd , Michael J. Miller
IPC分类号： C07C51/42
CPC分类号： C07C51/42
摘要： A method is disclosed for recovering oxalate from oxalate containing solutions containing complexes of iron and chromium. The method involves adjusting the pH of the solution to from about 1 to 2, adding calcium chloride in an amount equal to at least about 3 moles per mole of iron, and digesting the resulting calcium chloride treated solution at at least about 50.degree. C. for a sufficient time to form a solid consisting esssentially of calcium oxalate, followed by separating the solid from the resulting mother liquor.
摘要翻译： 公开了从含有铁和铬复合物的草酸盐溶液中回收草酸盐的方法。 该方法包括将溶液的pH调节至约1至2，加入等于至少约3摩尔/摩尔铁的氯化钙，并在至少约50℃下将得到的氯化钙处理溶液消化。 足够的时间形成基本上由草酸钙构成的固体，然后从所得母液中分离出固体。
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