公开(公告)号：US20130338421A1

公开(公告)日：2013-12-19

申请号：US13974302

申请日：2013-08-23

Applicant: SGL CARBON SE

Inventor： ALFRED EDLINGER ,  JOHANN DAIMER

IPC: A62D3/38

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。