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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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13.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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14.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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公开(公告)号：US4624844A
公开(公告)日：1986-11-25
申请号：US697662
申请日：1985-02-04
IPC分类号： C01G41/00
CPC分类号： C01G41/00
摘要： A process is disclosed for producing ammonium paratungstate which involves adding hexamethylenetetramine to a first solution of ammonium tungstate, adjusting the pH to about 2 with an acid to form a precipitate which contains the major portion of the tungsten and the hexamethylenetetramine and separating the precipitate from the resulting mother liquor. The tungsten hexamethylenetetramine precipitate is then dissolved in aqueous ammonia to form a second ammonium tungstate solution which is then heated at from about 90.degree. C. to about 100.degree. C. to form a precipitate essentially all of which is ammonium paratungstate and a mother liquor which contains essentially all of the hexamethylenetetramine. The ammonium paratungstate precipitate is then separated from the mother liquor.
摘要翻译： 公开了一种用于生产仲钨酸铵的方法，其涉及将六亚甲基四胺加入到钨酸铵的第一溶液中，用酸将pH调节至约2以形成含有主要部分的钨和六亚甲基四胺的沉淀物，并将沉淀物与 产生母液。 然后将六亚甲基四胺钨沉淀物溶解在氨水中形成第二钨酸铵溶液，然后将其加热至约90℃至约100℃，以形成基本上全部为仲钨酸铵的母液和母液， 含有基本上所有的六亚甲基四胺。 然后将仲钨酸铵沉淀物与母液分离。
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公开(公告)号：US4608084A
公开(公告)日：1986-08-26
申请号：US718257
申请日：1985-04-01
CPC分类号： C22B23/0484 , C22B23/0423 , C22B3/0025 , C22B34/32 , C22B7/007 , Y02P10/234
摘要： A process is disclosed for recovering cobalt and chromium from a cobalt and chromium containing alloy. The process involves first digesting the alloy in concentrated hydrochloric acid at a sufficient temperature for a sufficient time to form a first solution containing the major portion of the cobalt, chromium, and any iron and nickel present in the alloy and a first solid and separating the first solution from the first solid. Oxalic acid is then added to the first solution in an amount sufficient to subsequently precipitate the major portion of the cobalt and any iron and nickel contained in the first solution followed by adjustment of the ph to from about 1 to about 2 with a base and maintaining the temperature below about 20.degree. for a sufficient time to form a second solid containing the major portion of the cobalt and the major portion of any iron and nickel which is present in the first solution and a second solution containing the major portion of the chromium which is present in the first solution and separation of the second solid from the second solution. The second solid is then washed with sufficient water to remove any water soluble impurities and separated from the resulting wash water. The resulting washed second solid is then contacted with a calcium chloride solution of sufficient calcium chloride concentration, at a sufficient temperature, for a sufficient time to form a third solution containing the major portion of the cobalt which was present in the second solid, and a third solid. The third solution is then separated from the third solid.
摘要翻译： 公开了从含钴和铬的合金中回收钴和铬的方法。 该方法包括首先在足够的温度下将浓缩的合金中的合金消化足够的时间以形成含有合金中存在的钴，铬和任何铁和镍的主要部分的第一溶液和第一固体， 从第一个固体的第一个解决方案。 然后将草酸以足以随后沉淀出主要部分的钴和第一溶液中所含的任何铁和镍的量，然后用碱将ph调节至约1至约2，并保持 温度低于约20°足够的时间以形成第二固体，其含有钴的主要部分和存在于第一溶液中的任何铁和镍的主要部分和含有主要部分铬的第二溶液， 存在于第一溶液中并且将第二固体与第二溶液分离。 然后用足够的水洗涤第二固体以除去任何水溶性杂质并从得到的洗涤水中分离。 然后将所得洗涤后的第二固体在足够的温度下与足够氯化钙浓度的氯化钙溶液接触足够的时间以形成含有存在于第二固体中的钴的主要部分的第三溶液， 第三个固体。 然后将第三溶液与第三固体分离。
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公开(公告)号：US4447404A
公开(公告)日：1984-05-08
申请号：US451120
申请日：1982-12-20
IPC分类号： C01G39/00
CPC分类号： C01G39/00
摘要： Ammonium molybdate is produced from molybdenum disulfide concentrate by contacting the concentrate with an aqueous solution of ammonium chloride and chlorine at suitable concentrations and for a sufficient period of time to solubilize molybdenum disulfide present in said concentrate as molybdate ions and form a solution of ammonium molybdate.
摘要翻译： 通过使浓缩物与氯化铵和氯的水溶液以合适的浓度接触并持续足够的时间以溶解存在于所述浓缩物中的二硫化钼作为钼酸根离子并形成钼酸铵溶液，由钼酸二铵制备钼酸铵。
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公开(公告)号：US4381937A
公开(公告)日：1983-05-03
申请号：US304400
申请日：1981-09-21
CPC分类号： C22B23/0423 , C01G51/12 , C22B23/0461 , Y02P10/212
摘要： In a process for producing fine cobalt metal powder from scrap material containing brazing compositions, the scrap is digested with hydrochloric acid to form a cobalt chloride solution which the silver is removed by precipitation with a suitable alkali metal halide at a pH of about 7 to result in a cobalt amine chloride solution which is further processed to fine cobalt powder.
摘要翻译： 在由含有钎焊组合物的废料制造精细钴金属粉末的方法中，废料用盐酸消化以形成氯化钴溶液，通过在约7的pH下用合适的碱金属卤化物沉淀除去银，得到 在钴胺氯化物溶液中，其进一步加工成细小的钴粉末。
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公开(公告)号：US4278463A
公开(公告)日：1981-07-14
申请号：US135050
申请日：1980-03-28
CPC分类号： C22B23/0469
摘要： Cobalt is recovered from byproduct streams from a basic process by contacting the byproduct streams with aluminum metal for a sufficient period of time to produce cobalt metal as a precipitate. The basic process is the type wherein cobalt ions in solution are complexed with ammonia in the presence of halide ions to form an ammine halide solution from which a cobalt containing precipitate is separated. The precipitate is subsequently reduced to form a cobalt metal powder.
摘要翻译： 通过使副产物流与铝金属接触足够的时间以产生作为沉淀物的钴金属，从碱性方法从副产物流中回收钴。 基本方法是其中在卤化物离子存在下，溶液中的钴离子与氨络合的形式，以形成分离有钴的沉淀物的卤化铵溶液。 随后将沉淀物还原形成钴金属粉末。
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20.发明授权Electrolytic method for producing ammonium paratungstate from cemented tungsten carbide 失效从硬质合金碳化钨生产仲钨酸铵的电解方法
公开(公告)号：US5021133A
公开(公告)日：1991-06-04
申请号：US504480
申请日：1990-04-04
申请人： Clarence D. Vanderpool , Tai K. Kim
发明人： Clarence D. Vanderpool , Tai K. Kim
摘要： A method is disclosed for producing ammonium paratungstate from cemented tungsten carbide which comprises subjecting the cemented tungsten carbide to electrolysis by passing about 0.5 to about 20 volts through an ammoniacal solution selected from the group consisting of ammonium hydroxide-ammonium chloride solution, ammonium hydroxide-ammonium carbonate solution, and ammonium hydroxide-ammonium sulfate solution, wherein platinum and the cemented tungsten carbide serve as the anode and wherein the anode is immersed in the solution, to decompose the cemented tungsten carbide and form a solution of ammonium tungstate from which is crystallized ammonium paratungstate.
摘要翻译： 公开了一种用于从硬质合金碳化钨生产仲钨酸铵的方法，该方法包括使固结的碳化钨经过约0.5至约20伏的电解，通过选自氢氧化铵 - 氯化铵溶液，氢氧化铵 - 铵的氨溶液 碳酸盐溶液和氢氧化铵 - 硫酸铵溶液，其中铂和硬质合金碳化钨用作阳极，并且其中阳极浸入溶液中，以分解粘结碳化钨并形成钨酸铵溶液，其中结晶的铵 副州
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