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公开(公告)号：US08888909B2
公开(公告)日：2014-11-18
申请号：US13513158
申请日：2010-12-02
Applicant: Klaus H. Oehr , Gary A. Cyr , Travis Janke , Claudio I. Arato , Roderick O. McElroy
Inventor： Klaus H. Oehr , Gary A. Cyr , Travis Janke , Claudio I. Arato , Roderick O. McElroy
CPC classification number: C22B43/00 , B03D1/006 , B03D1/008 , B03D2201/007 , B03D2201/02 , B03D2201/04 , B03D2203/08 , C04B18/08 , C22B7/02 , Y02P10/212 , Y02W30/92 , Y10S106/01 , C04B20/023 , C04B20/026
Abstract: A method of producing enhanced coal combustion ash for use in pozzolanic applications or cement manufacture, in which the enhanced combustion ash has lower mercury content. A slurry is formed of the combustion ash and water and is subjected to froth flotation to form a mercury-enriched ash slurry and a mercury-depleted ash slurry. The product mercury-depleted ash slurry is isolated and may optionally be dried. The combustion ash may be pulverized prior to being used to form the slurry, reducing its mean particle size. The mercury-depleted combustion ash product has reduced levels of mercury and ammonia, and reduced particle size.
Abstract translation: 一种生产用于火山灰应用或水泥制造的增强型煤燃烧灰的方法，其中增强的燃烧灰具有较低的汞含量。 浆料由燃烧灰和水形成，并进行泡沫浮选以形成富含汞的灰浆和贫汞灰浆。 分离产物汞贫灰浆，并可任选地干燥。 燃烧灰可以在用于形成浆料之前粉碎，降低其平均粒度。 汞消耗的燃烧灰产品具有降低的汞和氨的水平，并且减小粒径。
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公开(公告)号：US5336297A
公开(公告)日：1994-08-09
申请号：US18032
申请日：1993-02-16
Applicant: Roderick O. McElroy
Inventor： Roderick O. McElroy
CPC classification number: C22B19/26 , C22B13/10 , C22B3/0005 , C22B3/10 , C22B7/02 , Y02P10/234 , Y10S75/961
Abstract: In a process for the treatment of electric arc furnace (EAF) dust, the dust is first subjected to atmospheric leaching with a ferric chloride solution and thereafter subjected to treatment in an autoclave at an elevated temperature and pressure for conversion of low temperature stable goethite (FeO.OH) to a filterable crystalline hematite (Fe.sub.2 O.sub.3) in an acidic chloride solution. Zinc is recovered from the solution by solvent extraction using a solvating extractant followed by stripping and zinc recovery by electrolysis of zinc chloride solution. Lead is separated from the solution by cooling to precipitate lead chloride.
Abstract translation: 在电弧炉（EAF）粉尘的处理过程中，首先用氯化铁溶液进行大气浸出，然后在高压釜中在高温高压下进行处理，以转化低温稳定的针铁矿（ FeO.OH）在酸性氯化物溶液中的可过滤的结晶赤铁矿（Fe 2 O 3）。 使用溶剂萃取剂通过溶剂萃取从溶液中回收锌，然后通过电解氯化锌溶液进行汽提和锌回收。 通过冷却将铅与溶液分离以沉淀氯化铅。
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公开(公告)号：US20120234211A1
公开(公告)日：2012-09-20
申请号：US13513158
申请日：2010-12-02
Applicant: Klaus H. Oehr , Gary A. Cyr , Travis Janke , Claudio I. Arato , Roderick O. McElroy
Inventor： Klaus H. Oehr , Gary A. Cyr , Travis Janke , Claudio I. Arato , Roderick O. McElroy
CPC classification number: C22B43/00 , B03D1/006 , B03D1/008 , B03D2201/007 , B03D2201/02 , B03D2201/04 , B03D2203/08 , C04B18/08 , C22B7/02 , Y02P10/212 , Y02W30/92 , Y10S106/01 , C04B20/023 , C04B20/026
Abstract: A method of producing enhanced coal combustion ash for use in pozzolanic applications or cement manufacture, in which the enhanced combustion ash has lower mercury content. A slurry is formed of the combustion ash and water and is subjected to froth flotation to form a mercury-enriched ash slurry and a mercury-depleted ash slurry. The product mercury-depleted ash slurry is isolated and may optionally be dried. The combustion ash may be pulverized prior to being used to form the slurry, reducing its mean particle size. The mercury-depleted combustion ash product has reduced levels of mercury and ammonia, and reduced particle size.
Abstract translation: 一种生产用于火山灰应用或水泥制造的增强型煤燃烧灰的方法，其中增强的燃烧灰具有较低的汞含量。 浆料由燃烧灰和水形成，并进行泡沫浮选以形成富含汞的灰浆和贫汞灰浆。 分离产物汞贫灰浆，并可任选地干燥。 燃烧灰可以在用于形成浆料之前粉碎，降低其平均粒度。 汞消耗的燃烧灰产品具有降低的汞和氨的水平，并且减小粒径。
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