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公开(公告)号:US09199109B2
公开(公告)日:2015-12-01
申请号:US13974302
申请日:2013-08-23
Applicant: SGL CARBON SE
Inventor: Alfred Edlinger , Johann Daimer
IPC: C10J3/20 , A62D3/38 , A62D3/40 , F23G7/00 , F23G5/027 , F23G5/10 , F23G5/16 , C10J3/18 , C10J3/22 , C10J3/26 , C10J3/42 , C10J3/57 , C10K1/00 , C10K1/10
CPC classification number: A62D3/38 , C10J3/18 , C10J3/22 , C10J3/26 , C10J3/42 , C10J3/57 , C10J2200/156 , C10J2300/0946 , C10J2300/0959 , C10J2300/0976 , C10J2300/123 , C10K1/003 , C10K1/103 , F23G5/0276 , F23G5/10 , F23G5/16 , F23G7/003 , F23G2201/301 , F23G2201/303 , F23G2201/701 , F23G2202/20 , F23G2204/204 , F23G2900/50001
Abstract: In a method for processing used cathode material containing carbon, in particular used cathode troughs from aluminum production, the cathode material is put into a shaft furnace and, in order to gasify carbon, is subjected to a thermal treatment in the shaft furnace at a temperature above the ignition temperature of the carbon and above the evaporation temperature of toxic substances contained in the used cathode material. The reaction gases are conducted co-current with the carbon in a first longitudinal section of the shaft furnace and countercurrent to the carbon in a second longitudinal section of the shaft furnace. The reaction gases are drawn from a region of the shaft furnace having an enlarged cross-section between the longitudinal sections and are preferably subjected to an after-treatment.
Abstract translation: 在用于处理使用的含有碳的阴极材料的方法中,特别是从铝生产使用的阴极槽中,将阴极材料放入竖炉中,为了气化碳,在竖炉中以温度进行热处理 高于碳的点火温度和高于所用阴极材料中所含有毒物质的蒸发温度。 反应气体与竖炉的第一纵向部分中的碳一起导通,并与竖炉第二纵向部分中的碳逆流。 反应气体从竖炉的具有在纵向截面之间的横截面扩大的区域抽出,并且优选地进行后处理。