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1.发明授权
公开(公告)号：US4199551A
公开(公告)日：1980-04-22
申请号：US869338
申请日：1978-01-13
CPC分类号： C01G39/003 , C01G39/00 , C22B3/24 , Y02P10/234
摘要： Molybdenum is separated from molybdenum-containing activated charcoal or char also containing small amounts of uranium obtained as a by-product in uranium leaching processes by stripping with an alkaline solution to provide a molybdenum-containing solution containing substantially less than 500 ppm U.sub.3 O.sub.8.
摘要翻译： 钼在与铀浸出过程中作为副产物获得的含有少量铀的含钼活性炭或炭分离，通过用碱性溶液汽提以提供含有基本上小于500ppm的U3O8的含钼溶液。
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2.发明授权Membrane process for separating contaminant anions from aqueous solutions of valuable metal anions 失效从有价值金属阴离子的水溶液中分离污染物阴离子的膜工艺
公开(公告)号：US4234393A
公开(公告)日：1980-11-18
申请号：US31325
申请日：1979-04-18
摘要： An aqueous solution of at least one valuable oxyanion containing molybdenum, tungsten, vanadium, or uranium is refined to lower the content of contaminant anions such as PO.sub.4.sup.-3, SO.sub.4.sup.-2, NO.sub.3.sup.-, Cl.sup.-, ClO.sub.3.sup.-, and ClO.sub.4.sup.-, by subjecting the solution to electrolysis at a pH of from 0.5 to 4.0 between a cation-permselective membrane and an anion-permselective membrane having tertiary amine or quaternary ammonium anion exchange groups, to cause contaminant anions to pass from the solution into the anolyte. Ammonium molybdates, tungstates, vanadates, and uranates are formed from the thus-refined solution by subjecting it to a second stage of electrolysis at a pH of at least 7 between a cation-permselective membrane and an anion-permselective membrane to cause valuable oxyanions to pass from the solution into an anolyte which comprises an aqueous solution of ammonia and to form the desired ammonium compound.
摘要翻译： 精制含有钼，钨，钒或铀的至少一种有价值的含氧阴离子的水溶液以降低污染物阴离子如PO4-3，SO4-2，NO3-，Cl-，ClO3-和ClO4-的含量， 通过在阳离子 - 选择性选择性膜和具有叔胺或季铵阴离子交换基团的阴离子 - 选择性选择性膜之间，使pH为0.5〜4.0的溶液进行电解，使污染物阴离子从溶液中通入阳极电解液。 钼酸铵，钨酸盐，钒酸盐和铀酸盐由如此精制的溶液通过在阳离子 - 选择性渗透膜和阴离子 - 选择性选择性膜之间经受至少7的pH的第二阶段的电解而形成，以引起有价值的含氧阴离子 从溶液中通入包含氨水溶液并形成所需铵化合物的阳极电解液。
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公开(公告)号：US4189381A
公开(公告)日：1980-02-19
申请号：US940065
申请日：1978-09-07
CPC分类号： C02F1/76 , C02F1/465 , C22B3/42 , C02F2101/18 , C02F2101/20 , C02F2101/203 , Y02P10/234
摘要： Waste water containing over 2 ppm Mo and at least one heavy metal impurity selected from the group consisting of Fe, Mn, Cu, Zn, Pb, and Cd, and also containing cyanide ion (CN) is treated by passing waste water having an adjusted pH value ranging from about 3 to 4 through an ion-exchange resin column selective to the removal of Mo and provide an ion-exchange effluent containing at least one of said heavy metal impurities and said cyanide ion. The pH value of the effluent is then adjusted to a range of about 7 to 11 sufficient to precipitate the heavy metal impurity having the highest pH requirement for precipitation, following which the precipitate is flocculated and the effluent containing the flocculated precipitate then subjected to electrolysis using insoluble electrodes to form electrolytic oxygen and hydrogen and effect electroflotation of the flocculated precipitate and form a froth thereof which is separated from the effluent by skimming.
摘要翻译： 含有超过2ppm的Mo和选自Fe，Mn，Cu，Zn，Pb和Cd的至少一种重金属杂质的废水以及还含有氰化物离子（CN）的废水通过经过调节的废水 选择性地去除Mo的离子交换树脂柱的pH值为约3至4，并提供含有至少一种所述重金属杂质和所述氰化物离子的离子交换流出物。 然后将流出物的pH值调节至约7至11的范围，足以沉淀具有最高pH要求的沉淀的重金属杂质，随后沉淀物絮凝，并且将含有絮凝沉淀物的流出物进行电解，使用 不溶性电极形成电解氧和氢，并影响絮凝沉淀物的电浮选并形成其泡沫，通过撇渣与流出物分离。
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公开(公告)号：US4552749A
公开(公告)日：1985-11-12
申请号：US690708
申请日：1985-01-11
CPC分类号： B01J8/388 , B01J8/10 , C01G39/02 , B01J2219/187 , B01J2219/1946 , C01P2006/80
摘要： A process is provided for converting MoS.sub.2 to MoO.sub.2 wherein, MoS.sub.2 in particulate form is fed into a reactor while flowing MoO.sub.3 vapor therein to effect reaction thereof with MoS.sub.2 to form MoO.sub.2. The temperature in the reactor is maintained at a level sufficient to cause the reaction to go forward. A portion of the MoO.sub.2 is removed from the reactor as a product and the remainder is selectively oxidized at a temperature sufficient to generate gaseous MoO.sub.3 which is recycled to the reactor relative to the flow of MoS.sub.2 therein to convert the MoS.sub.2 to MoO.sub.2.
摘要翻译： 提供了用于将MoS 2转化为MoO 2的方法，其中将颗粒形式的MoS 2进料到反应器中，同时使MoO 3蒸气流动，以使其与MoS 2反应形成MoO 2。 反应器中的温度保持在足以引起反应前进的水平。 一部分MoO 2作为产物从反应器中除去，其余部分在足以产生气态MoO 3的温度下被选择性氧化，该气态MoO 3相对于其中的MoS 2的流动再循环到反应器中以将MoS 2转化为MoO 2。
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公开(公告)号：US4450144A
公开(公告)日：1984-05-22
申请号：US400539
申请日：1982-07-21
CPC分类号： C22B3/0012 , C01G41/003 , C22B3/0032 , Y02P10/234
摘要： A process for stripping tungsten values from a tungsten-bearing acidic liquid organic phase into a basic aqueous ammoniacal stripping solution comprises mixing the organic phase and the stripping solution with a high-shear mixing device to maximize the pH gradient between the organic phase and the aqueous solution whereby growth of any precipitated ammonium paratungstate crystals is minimized and the dissolution thereof is maximized and to strip the tungsten values from the organic phase into the stripping solution.
摘要翻译： 将钨值从含钨酸性液体有机相中提取到碱性含水氨汽提溶液中的方法包括用高剪切混合装置将有机相和汽提溶液混合，以使有机相和水相之间的pH梯度最大化 任何沉淀的仲钨酸钠晶体的生长被最小化并且其溶解最大化并且将钨值从有机相剥离到剥离溶液中的溶液。
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公开(公告)号：US4444733A
公开(公告)日：1984-04-24
申请号：US470339
申请日：1983-02-28
申请人： John M. Laferty , Dale K. Huggins , John D. Bruno
发明人： John M. Laferty , Dale K. Huggins , John D. Bruno
CPC分类号： C22B34/34 , C01G3/003 , C01G39/003 , C22B3/0012 , C22B3/0017 , Y02P10/234
摘要： A hydrometallurgical process is provided for the recovery of molybdenum values from a molybdenum disulfide concentrate containing copper. The process comprises forming an aqueous slurry of finely divided molybdenum concentrate of carbonates and hydroxides of alkali metals, and pressure leaching the slurry in the presence of oxygen at an elevated temperature and pressure for a time sufficient to effect conversion of the contained molybdenum values to alkali metal molybdate and provide a residue containing copper oxide or basic copper carbonate from which copper is later recovered. The molybdenum values are recovered from solution by solvent extraction and the solvent thereafter stripped of the molybdenum as ammonium molybdenum using ammonium hydroxide. The molybdenum is recovered as crystals of ammonium molybdate by crystallization, e.g., by evaporating the stripping solution.
摘要翻译： 提供了一种用于从含铜的二硫化钼浓缩物回收钼值的湿法冶金方法。 该方法包括形成碳酸盐和碱金属的氢氧化物的精细分散的钼精矿的水浆料，并在高温和高压下在氧气存在下将浆料浸出一段时间，以使所含钼值转化为碱 并提供一种含有氧化铜或碱式碳酸铜的残余物，其后从中回收铜。 通过溶剂萃取从溶液中回收钼值，然后用氢氧化铵将钼溶解为钼的溶剂。 通过结晶例如通过蒸发汽提溶液来回收钼作为钼酸铵的晶体。
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公开(公告)号：US4504461A
公开(公告)日：1985-03-12
申请号：US528885
申请日：1983-09-02
申请人： Kent H. Carpenter , John M. Laferty
发明人： Kent H. Carpenter , John M. Laferty
IPC分类号： C01G41/00
CPC分类号： C01G41/00
摘要： A process is provided for producing ammonium metatungstate comprising fluid bed roasting ammonium paratungstate at a temperature over the range of about 275.degree. C. to 305.degree. C. for a time at least sufficient to provide a roasted product in the form of a precursor of ammonium metatungstate, forming an aqueous slurry of the precursor and digesting the precursor at a pH of about 3 to 4 for a time at least sufficient to effect substantially complete dissolution of said precursor, filtering the digested slurry to produce a clear filtrate, and further processing the clear filtrate by evaporation to provide crystals of substantially pure ammonium metatungstate.
摘要翻译： 提供了一种制备偏钨酸铵的方法，该方法包括在约275℃至305℃的温度范围内焙烧仲钨酸铵的流化床至少足以提供铵前体形式的焙烤产物 偏钨酸盐，形成前体的水性浆液并在约3至4的pH下消化前体至少足以实现所述前体的基本上完全溶解的时间，过滤消化的浆料以产生澄清的滤液，并进一步处理 通过蒸发澄清滤液以提供基本上纯的偏钨酸铵晶体。
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8.发明授权Atmospheric leach ion-exchange process for treating iron-containing nickel-copper matte 失效用于处理含铁镍铜锍的大气浸出离子交换工艺
公开(公告)号：US4100043A
公开(公告)日：1978-07-11
申请号：US724380
申请日：1976-09-17
CPC分类号： C01G3/003 , C22B15/0071 , C22B23/043 , C22B3/42 , Y02P10/234 , Y02P10/236
摘要： A method is provided for leaching comminuted nickeliferous sulfide matte containing by weight about 20 to 75% nickel, about 5 to 50% copper, non-stoichiometric sulfur in the range of over 4 to about 24%, over 0.5 to about 20% iron, the sum of the nickel, copper and sulfur contents being at least about 80% of the matte composition, with the balance gangue or slag and incidental impurities.Nickel is selectively leached from the comminuted matte using sulfuric acid or spent copper electrolyte solution at substantially atmospheric pressure while vigorously aerating the solution, wherein the pH is raised sufficiently to produce a nickel solution with an iron content of less than about 10 ppm and a copper content of over 5 ppm, the copper being thereafter selectively removed from the nickel solution by passing the solution through an ion-exchange resin selective to the absorption of copper.
摘要翻译： 提供了一种用于浸出粉碎的含镍硫化物锍的方法，其含有约20至75％的镍，约5至50％的铜，超过4至约24％范围内的非化学计量的硫，超过0.5至约20％的铁， 镍，铜和硫含量的总和至少为锍组合物的约80％，余量为ang石或矿渣和附带杂质。
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9.发明授权Recovery of molybdenum from spent catalyst solutions obtained from hydroperoxide epoxidations 失效从由氢过氧化物环氧化物获得的废催化剂溶液中回收钼
公开(公告)号：US4547345A
公开(公告)日：1985-10-15
申请号：US589387
申请日：1984-03-14
CPC分类号： C22B34/34 , C22B7/009 , Y02P10/214 , Y02P10/234
摘要： Molybdenum is recovered from an organic material, such as a spent epoxidation catalyst, by heating the material in a stream of non-oxidizing gas at a temperature of at least about 400.degree. C. to evolve the organic in the gas stream from which it is recovered and to leave a powdery residue containing essentially all of the molybdenum.
摘要翻译： 通过在至少约400℃的温度下将非氧化性气体流中的材料加热，从有机材料如废环氧化催化剂中回收钼，以从其中逸出气流中的有机物 回收并留下含有基本上所有钼的粉末状残余物。
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公开(公告)号：US4495157A
公开(公告)日：1985-01-22
申请号：US528884
申请日：1983-09-02
IPC分类号： C01F7/02 , C01G31/00 , C01G39/00 , C01G51/04 , C01G53/04 , C22B3/28 , C22B7/00 , C22B34/22 , C22B34/34
CPC分类号： C01G39/003 , C01F7/02 , C01G31/003 , C01G51/04 , C01G53/04 , C22B3/0012 , C22B3/0016 , C22B34/22 , C22B34/34 , C22B7/008 , C01P2006/80 , Y02P10/234
摘要： A process is provided for recovering metal values from spent hydrodesulfurization catalyst, the process comprising forming in a pressure reactor an aqueous slurry of finely divided spent catalyst and sodium carbonate, the spent catalyst containing by weight about 2 to 10% Mo, up to about 12% V (e.g., about 2 to 10%), about 0.5 to 4% Co, up to about 10% Ni (e.g., about 0.5 to 5%), occluded oil, coke, sulfide sulfur and the balance essentially alumina. The amount of sodium carbonate employed is at least sufficient under oxidizing conditions to convert molybdenum and any vanadium present to soluble Na.sub.2 MoO.sub.4 and NaVO.sub.3 and to neutralize SO.sub.3 produced during oxidation, the amount of sodium carbonate being at least that required stoichiometrically. The slurry is heated to a temperature of about 200.degree. C. to 350.degree. C. (e.g., 275.degree. C. to 325.degree. C.) and a pressure of about 800 psig to 2500 psig (e.g., about 1500 psig to 2500 psig) for a time at least sufficient to solubilize the molybdenum and vanadium present, the amount of oxygen employed being over about 1.1 times the stoichiometric amount sufficient to oxidize the metal values and sulfur to the maximum oxidized state, and to oxidize the oil and free carbon to CO.sub.2 and H.sub.2 O. The solubilized Mo and V are thereafter separated from each other.
摘要翻译： 提供了用于从废加氢脱硫催化剂中回收金属值的方法，该方法包括在压力反应器中形成细分散的废催化剂和碳酸钠的含水浆料，废催化剂含有约2至10％Mo至多约12 ％V（例如约2至10％），约0.5至4％Co，至多约10％Ni（例如约0.5至5％），封闭油，焦炭，硫化物硫和余量基本为氧化铝。 使用的碳酸钠的量在氧化条件下至少足以将存在的钼和任何钒转化成可溶性Na 2 MoO 4和NaVO 3，并中和氧化期间产生的SO 3，碳酸钠的量至少为化学计量所需的量。 将浆料加热至约200℃至350℃（例如275℃至325℃）和约800psig至2500psig（例如约1500psig至2500psig）的压力 ）至少足以溶解存在的钼和钒，使用的氧气的量超过足以将金属值和硫氧化成最大氧化态的化学计量量的约1.1倍，并且使油和游离碳氧化 到CO2和H2O。 然后将溶解的Mo和V彼此分离。
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