发明授权
EP1689895B1 METHOD USING SELECTED CARBONS TO REACT WITH AL2O AND AL VAPORS IN THE CARBOTHERMIC PRODUCTION OF ALUMINUM
有权
方法，使用选择的煤与AL2O-和Al-STEAM反应中铝含量的卡博热采
- 专利标题： METHOD USING SELECTED CARBONS TO REACT WITH AL2O AND AL VAPORS IN THE CARBOTHERMIC PRODUCTION OF ALUMINUM
- 专利标题（中）： 方法，使用选择的煤与AL2O-和Al-STEAM反应中铝含量的卡博热采
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申请号： EP04813147.8申请日： 2004-12-02
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公开(公告)号： EP1689895B1公开(公告)日： 2007-11-14
- 发明人: FRUEHAN, Richard, J. , LI, Yun , CARKIN, Gerald
- 申请人： Alcoa Inc. , Elkem ASA , CARNEGIE MELLON UNIVERSITY
- 申请人地址： Alcoa Corporate Center, 201 Isabella Street Pittsburgh, PA 15212-5858 US
- 专利权人： Alcoa Inc.,Elkem ASA,CARNEGIE MELLON UNIVERSITY
- 当前专利权人： Alcoa Inc.,Elkem ASA,CARNEGIE MELLON UNIVERSITY
- 当前专利权人地址： Alcoa Corporate Center, 201 Isabella Street Pittsburgh, PA 15212-5858 US
- 代理机构： Parry, Simon James
- 优先权： US728512 20031204
- 国际公布： WO2005056843 20050623
- 主分类号： C22B21/02
- IPC分类号： C22B21/02 ; C22B5/06
摘要：
In a method for recovering Al from an off-gas (3,4) produced during carbothermic reduction of aluminum utilizing at least one smelter (1,2), the off-gas (3,4) is directed to an enclosed reactor (5) which is fed a supply of wood charcoal (7) having a porosity of from about 50 vol.% to 85 vol.% and an average pore diameter of from about 0.05 µm to about 2.00 µm, where the wood charcoal (7) contacts the off-gas (3,4) to produce at least Al4C3 (6), which is passed back to the smelter (1,2).
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