公开(公告)号：EP1029088B1

公开(公告)日：2001-10-04

申请号：EP98961102.5

申请日：1998-10-26

申请人： Deutsche Voest-Alpine Industrieanlagenbau GmbH

发明人： SCHMIDT, Martin ,  LASSNIG, Herbert ,  WURM, Johann ,  WIEDER, Kurt ,  AICHINGER, Georg ,  ZIEGLER, Josef

IPC分类号： C21B13/02 ,  F27D3/08 ,  F27B1/21

CPC分类号： C21B13/02 ,  F27B1/21 ,  F27D3/08

摘要： The invention relates to a shaft furnace (1), especially a direct reduction shaft furnace, with a charging stock (2) of lumpy material, especially lumpy material containing iron oxide and/or sponge iron, and conveyor screws (3) for removing the lumpy material from the shaft furnace (1). Said conveyor screws intersperse the shaft furnace casing in which they are mounted and are arranged over the floor area of the shaft furnace (1).

公开(公告)号：EP0953057B1

公开(公告)日：2001-09-19

申请号：EP97945869.2

申请日：1997-10-24

申请人： Deutsche Voest-Alpine Industrieanlagenbau GmbH

发明人： STOCKINGER, Josef ,  KASTNER, Rainer, Walter ,  MAYR, Herbert ,  LASSNIG, Herbert ,  HECKMANN, Hado ,  WIEDER, Kurt ,  SCHENK, Johannes

IPC分类号： C21B13/00 ,  C21B5/02

CPC分类号： C21B13/0006 ,  C21B5/023 ,  C21B13/002 ,  C21B2100/44 ,  Y02P10/136 ,  Y02P10/216

摘要： In a process for returning finely dispersed solids discharged from a reactor vessel (1) with a carrier gas through a discharge point (2) of the reactor vessel (1) to a return point (15) of the reactor vessel (1), the solids are separated in a solid separator (4), in particular a cyclone separator, then returned with a carrier gas to the reactor vessel (1) while a differential pressure is maintained between the solid separator (4) and the return point (15). When the solids enter the reactor vessel (1), they are at least partially gasified and/or burned with oxygen supplied for that purpose. To enable the solids to be returned without moving parts which would be exposed to abrasion, in a continuous and controlled manner, the separated solids are directly and continuously aspirated by the solid separator (4) by means of a propellant gas and by an injector effect, accelerated and supplied to the reactor vessel (1).

公开(公告)号：EP0953057A1

公开(公告)日：1999-11-03

申请号：EP97945869.0

申请日：1997-10-24

申请人： Deutsche Voest-Alpine Industrieanlagenbau GmbH

发明人： STOCKINGER, Josef ,  KASTNER, Rainer, Walter ,  MAYR, Herbert ,  LASSNIG, Herbert ,  HECKMANN, Hado ,  WIEDER, Kurt ,  SCHENK, Johannes

IPC分类号： C22B5 ,  C21B5 ,  C21B13

CPC分类号： C21B13/0006 ,  C21B5/023 ,  C21B13/002 ,  C21B2100/44 ,  Y02P10/136 ,  Y02P10/216

摘要： In a process for returning finely dispersed solids discharged from a reactor vessel (1) with a carrier gas through a discharge point (2) of the reactor vessel (1) to a return point (15) of the reactor vessel (1), the solids are separated in a solid separator (4), in particular a cyclone separator, then returned with a carrier gas to the reactor vessel (1) while a differential pressure is maintained between the solid separator (4) and the return point (15). When the solids enter the reactor vessel (1), they are at least partially gasified and/or burned with oxygen supplied for that purpose. To enable the solids to be returned without moving parts which would be exposed to abrasion, in a continuous and controlled manner, the separated solids are directly and continuously aspirated by the solid separator (4) by means of a propellant gas and by an injector effect, accelerated and supplied to the reactor vessel (1).