公开(公告)号：EP1407209A1

公开(公告)日：2004-04-14

申请号：EP02760185.5

申请日：2002-06-18

申请人： MESSER GRIESHEIM GmbH

发明人： FORJAHN, Heinz-Dieter ,  VETTER, Johannes

IPC分类号： F27D3/00 ,  F27B14/08 ,  C03B3/00

CPC分类号： F27D99/0073 ,  C03B3/00 ,  C03B5/005 ,  C03B5/12 ,  F23G2202/20 ,  F23G2209/30 ,  F27B9/082 ,  F27B9/28 ,  F27B2009/124 ,  Y02P40/52 ,  Y02P40/57

摘要： According to the invention, when melting fine filter dust in a conventional pot furnace and induction oven, dust re-generated therefrom reaches a high level. Compressing the dust is highly complex and not always possible. According to the invention, the filter dust is received in a dust-tight top chamber arranged upstream from the supply opening of a melting unit thermally connected to a combustion chamber. The dust particles arranged in the top chamber fall due to the effect of gravity in the melting unit and are melted therein. The procedure can be supported by producing an additional pressure gradient along the melting unit. Withdrawal of the dust is prevented to a considerable extent. The method is also suitable for vitrifying especially contaminated dust.