公开(公告)号：US4298582A

公开(公告)日：1981-11-03

申请号：US140569

申请日：1980-04-15

申请人： Jameel Menashi ,  Alkis S. Rappas ,  Donald A. Douglas

发明人： Jameel Menashi ,  Alkis S. Rappas ,  Donald A. Douglas

IPC分类号： C01G31/00 ,  C22B34/22 ,  C22B34/30

CPC分类号： C01G31/00 ,  C22B34/22 ,  C22B34/30 ,  Y02P10/234

摘要： Disclosed is a process for recovering chromium, vanadium, molybdenum, and tungsten from secondary resources such as alloy scrap comprising a refractory metal and base metals such as cobalt, nickel, iron, and copper. The scrap is calcined with sodium carbonate in air to convert the refractory metal values to MoO.sub.4.sup.=, VO.sub.4.sup..ident., WO.sub.4.sup.=, and CrO.sub.4.sup.= and the base metals to water insoluble oxides. A leach of the calcined materials produces a pregnant liquor rich in refractory metals which, after separation of the vanadium, molybdenum and tungsten values, is treated with CO, CHOO.sup.-, CH.sub.3 OH, or HCHO to reduce Cr.sup.+6 to Cr.sup.+3. The carbonate and bicarbonate salts produced as a byproduct of the reduction are recycled to the calcination stage.As a result of the V, W, and Mo partition, a mixed solid comprising CaO.nV.sub.2 O.sub.5, CaMoO.sub.4, and CaWO.sub.4 is produced. This is treated with carbonated water or formic acid to selectively dissolve vanadium values which are subsequently recovered by precipitation or extraction. The remaining mixed CaWO.sub.4 and CaMoO.sub.4 solid is treated with H.sub.2 O.sub.2 and sulfuric acid to reject a Mo and W-free CaSO.sub.4 precipitate, and to produce a concentrated solution of tungsten and molybdenum. The W values are selectively precipitated from this solution by decomposing the peroxy complexes. The process has the advantages that a wide variety of different feed materials can be treated, no energy intensive pyrometallurgy is involved, reagent consumption is minimized, and no aqueous effluents are produced.

摘要翻译： 公开了从二次资源中回收铬，钒，钼和钨的方法，例如包含难熔金属和诸如钴，镍，铁和铜的贱金属的合金废料。 将废料用碳酸钠在空气中煅烧以将难熔金属值转化为MoO4 =，VO4 =，WO4 =和CrO4 =，并将贱金属转化为水不溶性氧化物。 煅烧材料的浸出产生富含难熔金属的怀孕液体，在分离钒，钼和钨的值后，用CO，CHOO-，CH 3 OH或HCHO处理以将Cr + 6还原为Cr + 3。 作为还原的副产物产生的碳酸盐和碳酸氢盐被再循环到煅烧阶段。 作为V，W和Mo分隔的结果，制备了包含CaO·nV 2 O 5，CaMoO 4和CaWO 4的混合固体。 用碳酸水或甲酸处理，以选择性地溶解钒值，随后通过沉淀或萃取回收。 剩余的混合CaWO4和CaMoO4固体用H 2 O 2和硫酸处理以排除Mo和无W的CaSO 4沉淀物，并产生钨和钼的浓溶液。 W值通过分解过氧配合物从该溶液中选择性沉淀。 该方法的优点是可以处理各种不同的饲料，不涉及能量密集的火法冶金，减少试剂消耗，不产生含水废水。

公开(公告)号：US3607236A

公开(公告)日：1971-09-21

申请号：US3607236D

申请日：1969-09-22

申请人： PARKMAN T BROOKS ,  DALE A MARTIN

发明人： BROOKS PARKMAN T ,  MARTIN DALE A

IPC分类号： C22B3/00 ,  C22B3/10 ,  C22B3/28 ,  C22B3/38 ,  C22B3/44 ,  C22B7/00 ,  C22B34/30

CPC分类号： C22B3/0068 ,  C22B3/0012 ,  C22B3/0067 ,  C22B3/10 ,  C22B3/24 ,  C22B3/44 ,  C22B7/007 ,  C22B34/30 ,  Y02P10/234

摘要： Valuable metals are recovered from superalloy scrap by a series of process steps comprising (1) dissolution of the scrap in chlorinated acidic aqueous solution, (2) removal of tungsten and silica by adsorption on activated carbon, (3) extraction of molybdenum with a water-immiscible organic phosphate or phosphonate, (4) extraction of iron with a water-immiscible secondary amine, (5) extraction of cobalt with a water-immiscible tertiary amine, (6) precipitation of chromium as a hydrous basic sulfate, and nickel recovery.

公开(公告)号：US3480428A

公开(公告)日：1969-11-25

申请号：US3480428D

申请日：1967-02-07

申请人： GERHARD JANGG

发明人： JANGG GERHARD

IPC分类号： C22B34/30 ,  C22C1/02 ,  C22D1/24 ,  C22D1/26 ,  C22D5/00

CPC分类号： C22B34/30 ,  C22C1/02

公开(公告)号：US07589046B2

公开(公告)日：2009-09-15

申请号：US10843632

申请日：2004-05-12

申请人： Martin Dieterle ,  Wolfgang Juergen Poepel ,  Silke Berndt ,  Raimund Felder ,  Signe Unverricht ,  Klaus Joachim Mueller-Engel

发明人： Martin Dieterle ,  Wolfgang Juergen Poepel ,  Silke Berndt ,  Raimund Felder ,  Signe Unverricht ,  Klaus Joachim Mueller-Engel

IPC分类号： B01J23/00

CPC分类号： B01J23/002 ,  B01J23/885 ,  B01J37/0009 ,  B01J37/0045 ,  B01J37/0223 ,  B01J37/08 ,  B01J2523/00 ,  C07C51/252 ,  C21B13/006 ,  C21B13/0073 ,  C21B13/08 ,  C21B2100/44 ,  C22B1/216 ,  C22B34/00 ,  C22B34/30 ,  Y02P10/136 ,  C07C57/04 ,  B01J2523/17 ,  B01J2523/55 ,  B01J2523/68 ,  B01J2523/69

摘要： In a process for the thermal treatment of the precursor material of a catalytically active material in a rotary tube furnace through which a gas stream flows, at least a proportion of the gas stream flowing through the rotary tube furnace is circulated, and the associated rotary tube furnace apparatus and tube-bundle reactors for the partial gas-phase oxidation of acrolein to acrylic acid are loaded with catalysts whose catalytically active material is obtainable by the process for the thermal treatment.

摘要翻译： 在用于热处理旋转管式炉中的催化活性材料的前体材料的方法中，气流流过该方法，使流过旋转管式炉的气流的至少一部分循环，并将相关的旋转管 用于将丙烯醛部分气相氧化成丙烯酸的炉装置和管束反应器装载有催化活性物质可通过热处理方法获得的催化剂。

公开(公告)号：US2923672A

公开(公告)日：1960-02-02

申请号：US83160559

申请日：1959-08-04

申请人： NORTON CO

发明人： ERVIN JR GUY ,  UELTZ HERBERT F G

IPC分类号： C22B34/30 ,  C25C3/30 ,  C25C3/32 ,  C25C3/34

CPC分类号： C22B34/30 ,  C25C3/30 ,  C25C3/32 ,  C25C3/34

公开(公告)号：US2240231A

公开(公告)日：1941-04-29

申请号：US2240231D

CPC分类号： C22B34/30 ,  C21C7/10 ,  C22B4/04

公开(公告)号：US1659205A

公开(公告)日：1928-02-14

申请号：US75167824

申请日：1924-11-22

申请人： WESTINGHOUSE LAMP CO

发明人： ANTON LEDERER ERNEST

IPC分类号： C22B34/30

CPC分类号： C22B34/30

公开(公告)号：US1481697A

公开(公告)日：1924-01-22

申请号：US50536221

申请日：1921-10-04

申请人： HENRY DYSON WILLIAM ,  LESLIE AITCHISON

发明人： HENRY DYSON WILLIAM ,  LESLIE AITCHISON

IPC分类号： C22B34/30

CPC分类号： C22B34/30

公开(公告)号：US4961910A

公开(公告)日：1990-10-09

申请号：US70744

申请日：1987-07-06

申请人： Clarence D. Vanderpool ,  John A. Powers

发明人： Clarence D. Vanderpool ,  John A. Powers

IPC分类号： C01G39/00 ,  C01G41/02 ,  C22B3/06 ,  C22B3/08 ,  C22B34/30

CPC分类号： C01G39/00 ,  C01G41/02 ,  C22B3/06 ,  C22B3/065 ,  C22B3/08 ,  C22B34/30 ,  Y02P10/234

摘要： Methods are disclosed for recovering one or more of the metals of tungsten and molybdenum from metal-cellulose material. One method involves digesting the material in a mineral acid selected from the group consisting of hydrochloric acid having a concentration of at least about 4 normal, and sulfuric acid having a concentration of at least about 9 normal at a temperature of at least about 50.degree. C. for a sufficient time to form a digestion solid containing the major portion of the tungsten and a digestion solution containing a portion of any molybdenum which is present in the material, and separating the solid from the solution. Another method involves having as the starting material a metal-cellulose material comprising one or more of the metals of tungsten and molybdenum and elements selected from the group consisting of arsenic, phosphorus, silicon, and combinations thereof. The digestion is carried out as described above to form a digestion solution containing the major portion of any tungsten and molybdenum which is present, and a residue, followed by separating the digestion solution from the residue.

摘要翻译： 公开了用于从金属 - 纤维素材料回收一种或多种钨和钼金属的方法。 一种方法包括在至少约50℃的温度下将选自浓度至少约为4的盐酸和浓度至少约为9的正丁酸的无机酸中的材料消化 足够的时间以形成包含钨的主要部分的消解固体和含有存在于该材料中的钼的一部分的消解溶液，并将该固体与溶液分离。 另一种方法包括将作为起始材料的金属 - 纤维素材料包含钨和钼的一种或多种金属和选自砷，磷，硅及其组合的元素。 如上所述进行消化以形成含有存在的任何钨和钼的主要部分的消化溶液和残余物，然后从残留物中分离消化溶液。

公开(公告)号：US4557906A

公开(公告)日：1985-12-10

申请号：US669125

申请日：1984-11-07

申请人： Alan D. Douglas ,  Kenneth T. Reilly ,  John E. Landmesser

发明人： Alan D. Douglas ,  Kenneth T. Reilly ,  John E. Landmesser

IPC分类号： C01G41/00 ,  C01G47/00 ,  C22B34/30 ,  C22B61/00

CPC分类号： C01G41/003 ,  C01G47/003 ,  C22B3/42 ,  C22B34/30 ,  C22B61/00 ,  Y02P10/234

摘要： In a process for recovering rhenium, a starting material containing tungsten and rhenium is reacted with sodium hydroxide and an oxidizing reactant to form a fused solid. The fused solid is dissolved in water to solubilize the tungsten and rhenium values and then pass through an anion exchange resin to remove the rhenium values and form a solution containing the tungsten values. The resin is stripped to obtain the rhenium values from the resin.

摘要翻译： 在回收铼的方法中，将含有钨和铼的原料与氢氧化钠和氧化反应物反应以形成熔融固体。 将熔融的固体溶解在水中以溶解钨和铼的值，然后通过阴离子交换树脂以除去铼值并形成含有钨值的溶液。 剥离树脂以从树脂获得铼值。