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    • 6. 发明授权
    • Processes for the treatment of smelter flue dust
    • 冶炼烟尘处理工艺
    • US4891067A
    • 1990-01-02
    • US193873
    • 1988-05-13
    • Alkis S. RappasBrett T. Waterman
    • Alkis S. RappasBrett T. Waterman
    • C22B7/02
    • C22B7/02Y02P10/212
    • A process for the treatment of flue dust from copper and lead smelters includes the steps of subjecting a slurry (10) of water and flue dust to a first caustic leach (12) to form a first liquids soluble sulfate solution (14) and a first solids portion (15), subjecting the solids portion to a second caustic leach (16) to solubilize lead and arsenic in a second liquid portion (22) and, selectively extracting the arsenic from the second liquid portion by precipitation (23). A related process for the treatment of flue dust allows for the recovery of bismuth and includes the steps of separating (53) a slurry of water and flue dust into a first liquids (54) and first solids (63) portion, neutralizing (55) the first liquids portion to form a second liquids soluble sulfate solution (58) and a second solids portion (59), subjecting the first solids (63) portion to a first caustic leach (61) to produce a third liquids (66) and third solids portion (82), subjecting the third liquids portion (66) and the second solids portion (59) to a second caustic leach (60) to produce a fourth liquids (68) and fourth solids portion (91) and, selectively extracting arsenic from the fourth liquids portion (68) and bismuth from the third solids portion (82). A process for the recovery of soluble lead values from lead compounds includes the steps of subjecting a slurry (100) of the lead compound to a caustic leach (101) to solubilize the lead and oxidizing the lead in an electrolytic cell (38) to form lead oxide.
    • 用于处理来自铜和铅冶炼厂的烟道灰尘的方法包括以下步骤:使水和烟道灰尘的浆料(10)进行第一苛性浸出(12)以形成第一液体可溶性硫酸盐溶液(14)和第一 固体部分(15),使固体部分进行第二苛性浸出(16)以将铅和砷溶解在第二液体部分(22)中,并且通过沉淀(23)选择性地从第二液体部分提取砷。 用于处理烟道灰尘的相关方法允许回收铋,并且包括将水和烟道灰分的浆料分离(53)到第一液体(54)和第一固体(63)部分中的步骤,中和(55) 所述第一液体部分形成第二液体可溶性硫酸盐溶液(58)和第二固体部分(59),使所述第一固体(63)部分经受第一苛性浸出物(61)以产生第三液体(66)和第三液体 固体部分(82),使第三液体部分(66)和第二固体部分(59)经受第二苛性浸出(60)以产生第四液体(68)和第四固体部分(91),并且选择性地提取砷 从第四液体部分(68)和来自第三固体部分(82)的铋。 从铅化合物回收可溶性铅值的方法包括以下步骤:使铅化合物的浆料(100)进行苛性浸出(101)以溶解铅并将铅氧化成电解池(38)以形成 氧化铅
    • 7. 发明授权
    • Nickel recovery employing carbonyl ferrates
    • 使用羰基高铁酸盐的镍回收
    • US4128416A
    • 1978-12-05
    • US868054
    • 1978-01-09
    • Alkis S. RappasJ. Paul Pemsler
    • Alkis S. RappasJ. Paul Pemsler
    • C22B23/06C22B23/04
    • C22B23/065Y02P10/212
    • A novel process for recovering nickel metal from aqueous ammoniacal nickel solutions such as leach liquors at or close to ambient temperatures and pressures. The process comprises contacting the nickel solution with carbonyl ferrate ions such as HFe(CO).sub.4.sup.- or Fe(CO).sub.4.sup.-- in the presence of carbon monoxide to produce nickel carbonyl. The nickel carbonyl is collected as a gas, concentrated, and decomposed to produce nickel metal and carbon monoxide. The carbonyl ferrate ions may conveniently be produced by subjecting an iron pentacarbonyl solution to an aqueous alkaline solution containing potassium hydroxide or the like. The nickel depleted ammoniacal liquor is purged of iron resulting from the nickel carbonylation treatment by oxidizing the ferrous values to iron oxide and may thereafter be recycled to solubilize additional nickel values. The iron oxide in turn may be reduced to iron pentacarbonyl and treated with an aqueous alkaline solution for reuse in carbonylation of additional nickel values.
    • 一种从或接近环境温度和压力从含水氨溶液如浸出液中回收镍金属的新方法。 该方法包括在一氧化碳存在下使镍溶液与羰基高铁酸根离子例如HFe(CO)4-或Fe(CO)4-)接触以产生羰基镍。 将羰基镍作为气体收集,浓缩并分解以产生镍金属和一氧化碳。 羰基高铁酸盐离子可以方便地通过使铁五羰基铁溶液经受含有氢氧化钾等的碱性水溶液来制备。 将镍贫化的氨水从镍羰基化处理中清除出来,通过将亚铁值氧化成氧化铁,然后再循环以溶解额外的镍值。 氧化铁又可以还原成五羰基铁,并用碱性水溶液处理以再次用于另外的镍值的羰基化。
    • 8. 发明授权
    • Winning nickel and cobalt with mercaptide extractants and carbon
monoxide strip
    • 获得镍和钴与硫醇萃取剂和一氧化碳条
    • US4097272A
    • 1978-06-27
    • US831502
    • 1977-09-08
    • Alkis S. RappasJ. Paul Pemsler
    • Alkis S. RappasJ. Paul Pemsler
    • C01G51/00C01G53/00C22B3/34C22B23/06C22B23/04C01G51/02C01G53/02C07C149/00
    • C22B23/065C01G51/003C01G53/003C22B3/0031Y02P10/234
    • A novel process for extracting, concentrating, and isolating nickel and cobalt from aqueous solution thereof. A cobalt and/or nickel bearing solution is contacted with an extractant comprising a substantially water immiscible organic solvent containing solubilized mercaptide anion to form water insoluble cobalt and nickel mercaptides in the organic phase. The organic phase is then separated from the raffinate and contacted with an alkaline solution and carbon monoxide to produce nickel and cobalt carbonyl compounds. Typically, the nickel carbonyl produced is gaseous Ni(CO).sub.4 which may be easily isolated by known methods from other components in the off-gas stream. Pure nickel metal is then obtained from the nickel tetracarbonyl by known methods. The cobalt carbonyl compound produced is typically water soluble carbonyl cobaltate ion, Co(CO).sub.4.sup.-, which may be oxidized to form water insoluble cobalt carbonyl compounds. The stripped extractant, the cobalt and nickel-free raffinate, and the carbon monoxide from the decomposition of carbonyl may be recycled.
    • 一种从其水溶液中提取,浓缩和分离镍和钴的新方法。 将含钴和/或镍的溶液与包含基本上与水溶性的含硫醇阴离子的水不混溶的有机溶剂的萃取剂接触,以在有机相中形成不溶于水的钴和镍硫醇。 然后将有机相与萃余液分离,并与碱性溶液和一氧化碳接触以产生镍和钴羰基化合物。 通常,生产的羰基镍是气态Ni(CO)4,其可以通过已知方法从废气流中的其它组分容易地分离。 然后通过已知的方法从四羰基镍获得纯镍金属。 所生产的羰基钴化合物通常是水溶性羰基钴酸根离子Co(CO)4-,其可被氧化形成水不溶性羰基钴化合物。 剥离的萃取剂,不含钴和镍的提余液和羰基分解中的一氧化碳可以循环使用。