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公开(公告)号：US5538532A
公开(公告)日：1996-07-23
申请号：US397409
申请日：1995-03-02
CPC分类号： C21B3/04 , C22B17/00 , C22B19/24 , C22B19/30 , C22B5/16 , C22B7/02 , Y02P10/216 , Y02P10/234 , Y02W30/542 , Y10S75/961
摘要： A method for the separation and recovery of metals selected from the group consisting of iron, cadmium, zinc, and lead, from raw material comprising a mixture of metals, which comprises the steps of heating the raw material to a temperature sufficient to substantially vaporize cadmium, zinc, and lead, and insufficient to substantially vaporize iron; separating secondary dust and vapors produced during the first step from the residual sinter mass, which mass comprises iron; slurrying the secondary dust in an aqueous solution of ammonia ammonium carbonate to dissolve zinc and cadmium; separating a zinc/cadmium bearing leach liquor from substantially insoluble lead containing particles by filtration; treating the zinc/cadmium bearing leach liquor to recover cadmium by adding metallic zinc to the leachate to produce a cadmium containing cement; separating the cement from the leach liquor; and removing ammonia from the leach liquor to precipitate basic zinc carbonate. The methods of the invention are especially suitable for treating electric arc furnace dusts.
摘要翻译： 一种从包含金属混合物的原料中分离和回收选自铁，镉，锌和铅的金属的方法，包括以下步骤：将原料加热到足以使镉基本蒸发的温度 ，锌和铅，不足以使铁完全蒸发; 分离第一步中产生的二次灰尘和蒸气，剩下的烧结块包含铁; 将二次粉尘在氨水碳酸铵水溶液中制浆以溶解锌和镉; 通过过滤将含锌/镉的浸出液与基本上不溶的含铅颗粒分离; 处理含锌/镉浸出液，通过向浸出液中加入金属锌来生产含镉水泥来回收镉; 将水泥与浸出液分离; 并从浸出液中除去氨以沉淀碱式碳酸锌。 本发明的方法特别适用于处理电弧炉粉尘。
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2.发明申请公开(公告)号：US20070028334A1
公开(公告)日：2007-02-01
申请号：US11437882
申请日：2006-05-22
申请人： Yin-Ming Li , Rufus Chaney , Roger Reeves , J. Angle , Alan Baker
发明人： Yin-Ming Li , Rufus Chaney , Roger Reeves , J. Angle , Alan Baker
IPC分类号： C01G13/00
CPC分类号： B09C1/105 , C22B3/18 , C22B17/00 , C22B19/00 , Y02P10/234
摘要： A cadmium- and zinc-hyperaccumulating subspecies from Thlaspi caerulescens and methods for removing and optionally recovering cadmium and zinc from soil using phytoextracting techniques wherein the subspecies is cultivated on soil containing cadmium and zinc.
摘要翻译： 来自Thlaspi caerulescens的镉和锌超积累亚种以及使用植物提取技术从土壤中去除和任选地回收镉和锌的方法，其中亚种在含有镉和锌的土壤上培养。
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3.发明授权
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4.发明授权公开(公告)号：US07049492B1
公开(公告)日：2006-05-23
申请号：US09856561
申请日：1999-11-23
CPC分类号： B09C1/105 , C22B3/18 , C22B17/00 , C22B19/00 , Y02P10/234
摘要： A cadmium and zinc hyperaccumulating subspecies from Thlaspi caerulescense and methods for removing or recovering cadmium and zinc from soils by cultivating the Thlaspi caerulescense subspecies on soils containing cadmium and zinc.
摘要翻译： 铊和锌超累积亚种从Thlaspi caerulescense和从土壤中去除或回收镉和锌的方法，通过培养含有镉和锌的土壤上的Thlaspi caerulescense亚种。
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公开(公告)号：US06838504B1
公开(公告)日：2005-01-04
申请号：US09646544
申请日：1999-05-06
申请人： William C Webster , Peter Hurley
发明人： William C Webster , Peter Hurley
IPC分类号： A62D3/00 , A62D3/33 , A62D3/37 , A62D3/38 , A62D101/24 , A62D101/43 , B01J20/00 , B01J20/28 , C02F1/62 , C08K3/32 , C22B7/00 , C22B17/00 , C22B43/00 , H01J61/02 , H01J61/72 , H01M6/50 , H01M10/06 , H01M10/30 , H01M10/42 , H01M10/54
CPC分类号： A62D3/33 , A62D3/37 , A62D3/38 , A62D2101/24 , A62D2101/43 , A62D2203/04 , A62D2203/10 , C22B3/24 , C22B7/00 , C22B17/00 , C22B43/00 , H01J61/02 , H01J61/72 , H01M10/06 , H01M10/30 , H01M10/4235 , H01M10/54 , H01M2200/00 , H01M2200/10 , Y02P10/234 , Y02W10/37 , Y02W30/84
摘要： The invention provides polymeric matrices and films comprising fixation reagents that are capable of reacting with solubilized metals to form less soluble metal compounds. The fixation reagenst may include inorganic sulfides and phosphates, as well as adsorbents. The polymeric matrices may be comprised of polyvinyl alcohols and polyvinyl acetates. In some embodiments, the polymeric matrix is selected to be at least as soluble as the selected fixation reagent, particularly under the conditions in which the matrix is expected to come into contact with the solublized metal.
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公开(公告)号：US2286017A
公开(公告)日：1942-06-09
申请号：US38060141
申请日：1941-02-26
申请人： NAT LEAD CO
发明人： HENRY SMITH CARLETON
IPC分类号： C22B17/00
CPC分类号： C22B17/00
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公开(公告)号：US5667553A
公开(公告)日：1997-09-16
申请号：US644836
申请日：1996-05-10
CPC分类号： C21B3/04 , C22B17/00 , C22B19/24 , C22B19/30 , C22B5/16 , C22B7/02 , Y02P10/216 , Y02P10/234 , Y02W30/542 , Y10S75/961
摘要： A method for the separation and recovery of metals selected from the group consisting of iron, cadmium, zinc, and lead, from raw material comprising a mixture of metals, which comprises the steps of heating the raw material to a temperature sufficient to substantially vaporize cadmium, zinc, and lead, and insufficient to substantially vaporize iron; separating secondary dust and vapors produced during the first step from the residual sinter mass, which mass comprises iron; slurrying the secondary dust in an aqueous solution of ammonia ammonium carbonate to dissolve zinc and cadmium; separating a zinc/cadmium bearing leach liquor from substantially insoluble lead containing particles by filtration; treating the zinc/cadmium bearing leach liquor to recover cadmium by adding metallic zinc to the leachate to produce a cadmium containing cement; separating the cement from the leach liquor; and removing ammonia from the leach liquor to precipitate basic zinc carbonate. The methods of the invention are especially suitable for treating electric arc furnace dusts.
摘要翻译： 一种从包含金属混合物的原料中分离和回收选自铁，镉，锌和铅的金属的方法，包括以下步骤：将原料加热到足以使镉基本蒸发的温度 ，锌和铅，不足以使铁完全蒸发; 分离第一步中产生的二次灰尘和蒸气，剩下的烧结块包含铁; 将二次粉尘在氨水碳酸铵水溶液中制浆以溶解锌和镉; 通过过滤将含锌/镉的浸出液与基本上不溶的含铅颗粒分离; 处理含锌/镉浸出液，通过向浸出液中加入金属锌来生产含镉水泥来回收镉; 将水泥与浸出液分离; 并从浸出液中除去氨以沉淀碱式碳酸锌。 本发明的方法特别适用于处理电弧炉粉尘。
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公开(公告)号：US5556447A
公开(公告)日：1996-09-17
申请号：US256552
申请日：1995-01-23
IPC分类号： A62D3/00 , B09C1/06 , B09C1/08 , C22B1/08 , C22B1/242 , C22B5/16 , C22B7/02 , C22B13/00 , C22B17/00 , C22B30/00 , C22B43/00
CPC分类号： C22B43/00 , B09C1/06 , B09C1/08 , C22B1/08 , C22B1/242 , C22B13/00 , C22B17/00 , C22B30/00 , C22B5/16 , C22B7/02 , F23G2201/50 , F23G2209/24 , F23G2900/50206
摘要： A process for treating wastes contaminated by toxic metals and/or organic materials is disclosed. The process involves heating the metal-contaminated wastes to a temperature sufficient to volatilize the metals. This temperature is also high enough to destroy or volatilize organic contaminants. The metal vapors are contacted with a sorbent which is reactive with the metals and sequesters them, thereby forming a non-leachable complex which can be disposed as non-hazardous conventional waste.
摘要翻译： 公开了一种处理被有毒金属和/或有机材料污染的废物的方法。 该方法包括将金属污染的废物加热到足以使金属挥发的温度。 该温度也足够高以破坏或挥发有机污染物。 金属蒸气与与金属反应并将其螯合的吸附剂接触，从而形成不可浸出的络合物，其可以作为非危险的常规废物处理。
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