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公开(公告)号：EP0946849A1
公开(公告)日：1999-10-06
申请号：EP97911047.0
申请日：1997-11-07
CPC分类号： B65G65/46 , C21B13/02 , F27B1/20 , F27D3/0033
摘要： A device for discharging or mixing lump materials from a shaft furnace with a hollow body for discharging the reaction materials open at the bottom and/or at least to one side, has screws arranged in a star-shape in the hollow body. These screws have shafts of different lengths in a plane and/or one screw is a continuous screw. In one of the possible combinations of floating shafts (2) of three different lengths, the shafts are arranged in the shaft furnace (1) so as to form an eight-pointed star, the opposite floating shafts (2) having the same length. The 'dead' or non-stirred area at the centre of the shaft furnace is extremely reduced in this combination.
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2.发明公开
公开(公告)号：EP0809713A1
公开(公告)日：1997-12-03
申请号：EP96925588.0
申请日：1996-08-01
发明人： DIEHL, Jörg , ROSENFELLNER, Gerald
CPC分类号： C21B13/0033 , C21B13/002 , C21B13/14 , C21B2100/282 , C21B2100/66 , Y02P10/122 , Y02P10/126 , Y02P10/128 , Y02P10/136
摘要： In a process for producing liquid raw iron or liquid steel base products and iron sponge from iron ore, the latter is directly reduced to iron sponge in a first reduction region (4), said iron sponge is melted in a melt-down gasification region (10) with the addition of carbon carriers and oxygen-containing gas and a reduction gas containing CO and H2 is generated which is taken into the first reduction region (4), reacted therein and drawn off as an export gas, from which CO2 is eliminated and which is heated and taken in the form of at least a largely CO2-free reduction gas to at least one further reduction region (29) for the direct reduction of iron ore. In order to make the fullest possible use of the export gas drawn off from the further reduction region (29), heat from the export gas leaving the further reduction region (29) is used to heat the export gas from the first reduction region (4).
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3.发明授权VERFAHREN UND EINRICHTUNG ZUM AUFBEREITEN VON REDUKTIONSGAS ZUR REDUKTION VON ERZEN 失效方法和装置用于治疗气体减排减少矿石
公开(公告)号：EP0966546B1
公开(公告)日：2001-10-17
申请号：EP98909204.4
申请日：1998-03-11
发明人： ROSENFELLNER, Gerald
IPC分类号： C21B13/00
CPC分类号： C21B13/0073 , Y02P10/136
摘要： The aim of the invention is to provide a method which optimizes the reduction process at a given ore quality. The reducing gas (7) is analyzed by the gas sensor (1) and divided into two split streams. The mass flow of the split stream to be oxidized is controlled by means of the control valve (3) and then reaches the burner (4) where oxidation takes place. The other reducing gas (7) split stream is controlled at the shaft by means of the control valve (2) in line with the quantity of gas required, raised to the required temperature in the heat exchanger (11) and combined with the oxidized split stream of reducing gas. The gas components are determined by means of the gas sensor (13) and, if necessary, the gas supply (14) is defined on the basis of mathematical formulae. The invention makes it possible to guide the reduction process towards its stoichiometric optimum at a given ore quality. A further advantage is that the reducing gas can be heated to the desired temperature with a very low oxidant component, so that the gas analysis can be adjusted in wide ranges.
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4.发明授权
公开(公告)号：EP0809713B1
公开(公告)日：2000-10-04
申请号：EP96925588.4
申请日：1996-08-01
发明人： DIEHL, Jörg , ROSENFELLNER, Gerald
IPC分类号： C21B13/14
CPC分类号： C21B13/0033 , C21B13/002 , C21B13/14 , C21B2100/282 , C21B2100/66 , Y02P10/122 , Y02P10/126 , Y02P10/128 , Y02P10/136
摘要： In a process for producing liquid raw iron or liquid steel base products and iron sponge from iron ore, the latter is directly reduced to iron sponge in a first reduction region (4), said iron sponge is melted in a melt-down gasification region (10) with the addition of carbon carriers and oxygen-containing gas and a reduction gas containing CO and H2 is generated which is taken into the first reduction region (4), reacted therein and drawn off as an export gas, from which CO2 is eliminated and which is heated and taken in the form of at least a largely CO2-free reduction gas to at least one further reduction region (29) for the direct reduction of iron ore. In order to make the fullest possible use of the export gas drawn off from the further reduction region (29), heat from the export gas leaving the further reduction region (29) is used to heat the export gas from the first reduction region (4).
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5.发明授权
公开(公告)号：EP0796349B1
公开(公告)日：1998-11-04
申请号：EP95937714.4
申请日：1995-11-28
发明人： DIEHL, Jörg , ROSENFELLNER, Gerald
CPC分类号： C21B13/0073 , C21B13/14 , C21B2100/282 , C21B2100/64 , C21B2100/66 , Y02P10/122 , Y02P10/126 , Y02P10/128 , Y02P10/136 , Y02P10/143
摘要： In a process for producing sponge iron from particulate iron oxide-containing material, iron oxide-containing material is reduced to sponge iron with a reducing gas in a reduction zone (4) and gas produced during reduction is withdrawn as top gas. In order to effectively use top gas produced during ore reduction, the CO2 contained in the top gas is removed, the thus obtained CO2-containing waste gas is mixed with an oxygen-containing waste gas is mixed with an oxygen-containing gas, is burned and the thermal energy thus produced is supplied to a consumer.
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6.发明公开VERFAHREN UND EINRICHTUNG ZUM AUFBEREITEN VON REDUKTIONSGAS ZUR REDUKTION VON ERZEN 失效方法和装置用于治疗气体减排减少矿石
公开(公告)号：EP0966546A1
公开(公告)日：1999-12-29
申请号：EP98909204.0
申请日：1998-03-11
发明人： ROSENFELLNER, Gerald
IPC分类号： C21B13
CPC分类号： C21B13/0073 , Y02P10/136
摘要： The aim of the invention is to provide a method which optimizes the reduction process at a given ore quality. The reducing gas (7) is analyzed by the gas sensor (1) and divided into two split streams. The mass flow of the split stream to be oxidized is controlled by means of the control valve (3) and then reaches the burner (4) where oxidation takes place. The other reducing gas (7) split stream is controlled at the shaft by means of the control valve (2) in line with the quantity of gas required, raised to the required temperature in the heat exchanger (11) and combined with the oxidized split stream of reducing gas. The gas components are determined by means of the gas sensor (13) and, if necessary, the gas supply (14) is defined on the basis of mathematical formulae. The invention makes it possible to guide the reduction process towards its stoichiometric optimum at a given ore quality. A further advantage is that the reducing gas can be heated to the desired temperature with a very low oxidant component, so that the gas analysis can be adjusted in wide ranges.
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7.发明授权
公开(公告)号：EP0787215B1
公开(公告)日：1998-08-12
申请号：EP95944801.0
申请日：1995-10-12
发明人： DIEHL, Jörg , ROSENFELLNER, Gerald , KEPPLINGER, Leopold, Werner , MILIONIS, Konstantin , SIUKA, Dieter , WIESINGER, Horst
IPC分类号： C21B13/14
CPC分类号： C21B13/0033 , C21B13/002 , C21B13/14 , C21B2100/282 , C21B2100/44 , C21B2100/66 , Y02P10/122 , Y02P10/126 , Y02P10/128 , Y02P10/136
摘要： In a process for producing liquid raw iron or steel basic products and iron sponge from charges consisting of iron ore and possible additives, the charges are directly reduced to iron sponge in a fixed-bed reducing region (12), the iron sponge is melted in a melt gasification region (8) with the addition of carbon vehicles and oxygen-containing gas and a reduction gas containing CO and H2 is produced which is taken into the reducing region (12), reacted there and drawn off as the export gas, CO2 is extracted from the export gas drawn off and taken as an at least largely CO2-free reducing gas together with some of the reducing gas formed in the melt gasification region (8) to a further reducing region (21) for the direct reduction of iron ore. In order to reduce the investment costs of a plant for implementing this process and improve productivity, part of the reducing gas generated in the melt gasification region (8) is diverted and taken to the further reduction region (21), by-passing the CO2 elimination stage.
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8.发明公开
公开(公告)号：EP0787215A1
公开(公告)日：1997-08-06
申请号：EP95944801.0
申请日：1995-10-12
发明人： DIEHL, Jörg , ROSENFELLNER, Gerald , KEPPLINGER, Leopold, Werner , SIUKA, Dieter , WIESINGER, Horst
CPC分类号： C21B13/0033 , C21B13/002 , C21B13/14 , C21B2100/282 , C21B2100/44 , C21B2100/66 , Y02P10/122 , Y02P10/126 , Y02P10/128 , Y02P10/136
摘要： In a process for producing liquid raw iron or steel basic products and iron sponge from charges consisting of iron ore and possible additives, the charges are directly reduced to iron sponge in a fixed-bed reducing region (12), the iron sponge is melted in a melt gasification region (8) with the addition of carbon vehicles and oxygen-containing gas and a reduction gas containing CO and H2 is produced which is taken into the reducing region (12), reacted there and drawn off as the export gas, CO2 is extracted from the export gas drawn off and taken as an at least largely CO2-free reducing gas together with some of the reducing gas formed in the melt gasification region (8) to a further reducing region (21) for the direct reduction of iron ore. In order to reduce the investment costs of a plant for implementing this process and improve productivity, part of the reducing gas generated in the melt gasification region (8) is diverted and taken to the further reduction region (21), by-passing the CO2 elimination stage.
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9.发明公开
公开(公告)号：EP0796349A1
公开(公告)日：1997-09-24
申请号：EP95937714.0
申请日：1995-11-28
发明人： DIEHL, Jörg , ROSENFELLNER, Gerald
CPC分类号： C21B13/0073 , C21B13/14 , C21B2100/282 , C21B2100/64 , C21B2100/66 , Y02P10/122 , Y02P10/126 , Y02P10/128 , Y02P10/136 , Y02P10/143
摘要： In a process for producing sponge iron from particulate iron oxide-containing material, iron oxide-containing material is reduced to sponge iron with a reducing gas in a reduction zone (4) and gas produced during reduction is withdrawn as top gas. In order to effectively use top gas produced during ore reduction, the CO2 contained in the top gas is removed, the thus obtained CO2-containing waste gas is mixed with an oxygen-containing waste gas is mixed with an oxygen-containing gas, is burned and the thermal energy thus produced is supplied to a consumer.
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