公开(公告)号：EP0804621B1

公开(公告)日：1998-08-26

申请号：EP95921644.1

申请日：1995-06-20

申请人： VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH ,  Brifer International Ltd.

发明人： CIP, Gerhard ,  MILIONIS, Konstantin ,  GUSCHEH, Morteza Sadat ,  WHIPP, Roy Hubert, Jr.

IPC分类号： C21B13/02 ,  C21B13/00

CPC分类号： C21B13/0073 ,  C21B2100/22 ,  C21B2100/282 ,  C21B2100/64 ,  Y02P10/122 ,  Y02P10/136 ,  Y02P10/143

公开(公告)号：EP0804621A1

公开(公告)日：1997-11-05

申请号：EP95921644.0

申请日：1995-06-20

申请人： VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH ,  Brifer International Ltd.

发明人： CIP, Gerhard ,  MILIONIS, Konstantin ,  GUSCHEH, Morteza Sadat ,  WHIPP, Roy Hubert, Jr.

IPC分类号： C21B13

CPC分类号： C21B13/0073 ,  C21B2100/22 ,  C21B2100/282 ,  C21B2100/64 ,  Y02P10/122 ,  Y02P10/136 ,  Y02P10/143

摘要： A direct reduction process for iron oxide-containing materials is disclosed. Synthesis gas is mixed with top gas produced during direct reduction of iron-oxide-containing materials and is used as reduction gas for direct reduction. In order to avoid or reduce metal dusting caused by an increased CO content of the reduction gas by a simple and economical technique and with a simple and economical equipment, while reducing energy consumption, the H2O content of the reduction gas is set between 1 and 2 %, preferably at approximately 1.5 % by washing away the CO2 contained in a partial volume of top gas before the top gas is used as reduction gas, the washed top gas is mixed with synthesis gas, is directly brought to a predetermined temperature by irrigation and at the same time saturated with H2O, after direct irrigation it is heated up to a temperature above saturation temperature by admixture of non-washed top gas, and is then used as reduction gas.