公开(公告)号：EP0840806B1

公开(公告)日：2001-10-04

申请号：EP96922679.4

申请日：1996-07-18

申请人： VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH ,  POHANG IRON & STEEL CO., LTD. ,  RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, INCORPORATED FOUNDATION

发明人： KEPPLINGER, Werner, Leopold ,  WALLNER, Felix ,  SCHENK, Johannes

IPC分类号： C21B13/00

CPC分类号： C21B13/002 ,  C21B13/14 ,  C21B2100/44 ,  Y02P10/136

摘要： In a process for producing liquid pig iron (24) or intermediate steel products form finely divided iron-containing material (5) in a melt gasification region of a melt gasifier (1), the iron-containing material (5) is melted on passing through the bed (27) consisting of solid carbon carriers (16', 16'') with the supply of carbon-containing material and oxygen-containing gas and with the simultaneous generation of a reducing gas. In order to be able to implement the process with a charge consisting of up to 100 % fine ore, while reliably preventing the separation of the fine ore fed, an inlet (18) for the finely divided coal (19), like coal dust and/or other carbon-containing materials with volatile components, and a line (21) supplying an oxygen-containing gas open in the vicinity of the reducing gas outlet (2, 17) of themelt gasifier (1), the finely divided coal (19) and/or other carbon-containing materials with volatile components are converted on entering the melt gasifier (1) into finely divided coke (19'), which is extracted together with the reducing gas taken from the melt gasifier (1) and separated in a separator (3).

公开(公告)号：EP0576414B1

公开(公告)日：2001-08-08

申请号：EP93890095.8

申请日：1993-05-11

申请人： VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH ,  POHANG IRON & STEEL CO., LTD. ,  RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, INCORPORATED FOUNDATION

发明人： Kepplinger, Leopold Werner, Dipl.-Ing. Dr. ,  Matzawrakos, Panajiotis, Dipl.-Ing. ,  Schenk, Johannes, Dipl.-Ing. Dr. ,  Siuka, Dieter, Dipl.-Ing.

IPC分类号： C21B13/14

CPC分类号： C21B13/14 ,  C21B13/002 ,  C21B2100/44 ,  Y10S75/961

公开(公告)号：EP1109940A1

公开(公告)日：2001-06-27

申请号：EP99926977.2

申请日：1999-06-21

申请人： POHANG IRON & STEEL CO., LTD. ,  RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY ,  VOEST-ALPINE INDUSTRIEANLAGENBAUGESELLSCHAFT m.b.H.

发明人： LEE, Il, Ock,Res. Inst. of Ind. Sci. & Tech. ,  KIM, Hang, Goo,Res. Inst. of Ind. Sci. & Tech. ,  JUNG, Uoo, Chang,Res. Inst. of Ind. Sci. & Tech. ,  CHOI, Nag, Joon,Res. Inst. of Ind. Sci. & Tech.

IPC分类号： C21B13/14

CPC分类号： C21B13/002 ,  C21B13/0033 ,  C21B13/14 ,  C21B2100/44 ,  C21B2100/66 ,  Y02P10/136 ,  Y02P10/212

摘要： A 2-Stage fluidized bed type reducing apparatus and a reducing method for fine iron ore of a wide particle size distribution with increasing the reducing gas utilization degree are disclosed. Fine iron particles dropping through the holes of a gas distributor (102, 202) can be recycled into the fluidized bed type furnace, thereby preventing an impediment of the reducing gas flow due to abnormal defluidizing or channeling. A first fluidized bed type furnace (100) dries, pre-heats and pre-reduces the fine iron ore, and a second fluidized bed type furnace (200) finally reduces the pre-reduced iron ore. Downstream of the respective fuidized beds, there are installed intermediate hoppers (500, 600) and gas/solid sealing valves (501, 503, 601, 603). Thus the fine iron ore particles which drop through the holes of gas distributors (102, 202) during the abnormal operation are recycled to the furnaces (100, 200). Accordingly the gas flow is not impeded.

公开(公告)号：EP0910672B1

公开(公告)日：2001-06-13

申请号：EP97929016.0

申请日：1997-07-09

申请人： VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH ,  POHANG IRON & STEEL CO., LTD. ,  RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, INCORPORATED FOUNDATION

发明人： GENNARI, Udo ,  SCHENK, Johannes-Leopold

IPC分类号： C21B13/14 ,  C21B13/00

CPC分类号： C21B13/002 ,  C21B13/0026 ,  C21B13/14 ,  C21B2100/44 ,  Y02P10/136

摘要： The invention relates to a process for charging of metal carrying materials containing a fine proportion and at least partially reduced, in a melt gasifier in which a melt gasification zone formed by a bed is maintained. Said metal carrying materials and the carbon carrying materials are introduced into the melt gasifier above the melt gasification zone. The metal carrying materials sink down to the melt gasification zone and migrate therethrough forming a molten metal and producing a reduction gas by coal gasification. To prevent partial withdrawal of the metal carrying materials from the melt gasifier while said metal carrying materials are being charged, in particular the fine particles thereof, they are introduced into the melt gasifier at a vertical distance below a dome (30) closing the melt gasifier at the top, by gravitational means and forming a strand (44), and the strand (44) is surrounded by a gas jacket (45) which surrounds and accompanies the free falling strand (44) from the formation point (at 40) thereof across a partial region (46) of the fall height, said strand (44) being supported in the partial region (46) thereof by the gas jacket (45) to prevent expansion.

公开(公告)号：EP1060273A1

公开(公告)日：2000-12-20

申请号：EP98961657.8

申请日：1998-12-22

申请人： POHANG IRON & STEEL CO., LTD. ,  RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY ,  VOEST-ALPINE INDUSTRIEANLAGENBAUGESELLSCHAFT m.b.H.

发明人： Kim, Hang Goo,Res. Inst. of Ind. Science & Techn. ,  Lee, Il Ock,Res. Inst. of Ind. Science & Techn. ,  Kang, Heung Won,Res. Inst. Ind. Science & Techn. ,  Jeong, Sun Kwang,Res. Inst. Ind. Science & Tech.

IPC分类号： C21B13/00

CPC分类号： C21B13/0033 ,  Y02P10/136

摘要： A complex fluidized bed type apparatus for reducing a fine iron ore, and a method therefor, are disclosed in which the reactivity of the fine iron ore particles, the gas utilization degree and the gas consumption rate are most efficiently, thereby reducing a fine iron ore of a wide particle size distribution in an optimal manner. The apparatus includes first (100) and second (200) fluidized bed furnaces and a cyclone (300), with a gas distributor being installed in the lower portion of each of the furnaces (102, 202). The fine iron ore is separated into coarse and medium/fine iron ore particles within the first fluidized bed furnace (100) which is installed within a freeboard zone within the second fluidized bed furnace (200). A second iron ore discharging hole (105) is connected through a conduit (106) into a lower portion of the second fluidized bed furnace (200). The cyclone (300) is connected from its bottom through a conduit (305) into the lower portion of the second fluidized bed furnace (200).

公开(公告)号：EP0741801B1

公开(公告)日：2000-04-12

申请号：EP95941919.3

申请日：1995-12-28

申请人： POHANG IRON & STEEL CO., LTD. ,  RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY ,  VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH

发明人： LEE, Il, Ock, Research Institute of Industrial ,  KIM, Yong Ha, Research Institute of Industrial ,  KIM, Hang Goo Research Institute of Industrial ,  JUNG, Bong Jin, Research Institute of Industrial ,  CHUNG, Uoo Chang, Research Institute of Industrial ,  KEPPLINGER, Werner L. ,  WALLNER, Felix ,  SCHENK, Johannes L.

IPC分类号： C21B13/14 ,  C22B5/14

CPC分类号： C21B13/002 ,  C21B13/0033 ,  C21B13/14 ,  C21B2100/66 ,  Y02P10/136 ,  Y02P10/216

摘要： A three-stage, fluidized-bed-type reduction apparatus and a method for using it for reducing fine iron ores of wide size ranges, improving the gas utilization and reduction degree, reducing the residence time of iron ores, and increasing the prereduction rate of reduced iron. The apparatus includes serially arranged a drying/preheating furnace with a first cyclone connected to it, a primary prereduction furnace with a second cyclone connected to it, a secondary high-gas-velocity reduction furnace for finally reducing only a coarse ore portion of the prereduced iron ores at a bubbling fluidized state while carrying over the medium/fine ore portion of the iron ores, a secondary low-gas-velocity reduction furnace for finally reducing the medium/fine ores forming a bubbling fluidized bed thereof, an inner cyclone installed in the secondary low-gas-velocity reduction furnace, and a third cyclone for capturing dusty ores not captured byt the inner cyclone.

公开(公告)号：EP0946759A1

公开(公告)日：1999-10-06

申请号：EP97920969.0

申请日：1997-05-02

申请人： POHANG IRON & STEEL CO., LTD. ,  RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY ,  VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH

发明人： LEE, Sang, Deok, Research Institute of Industrial ,  JUNG, Young, Chae, Research Institute, Industrial ,  PARK, Yoon, Chul, Research Institute of Industrial

IPC分类号： C21B13

CPC分类号： C21B13/002 ,  C21B13/14 ,  C21B2100/44 ,  Y02P10/136

摘要： An apparatus for manufacturing molten iron by using a calcination furnace (20), and a manufacturing method therefor are disclosed. A high temperature reducing gas (1000 to 1100 °C) from a melter gasifier (5) is used as a calcination heat in a calcination furnace (20) so as to cool the high temperature reducing gas to the optimum reduction temperature (800 to 850 °C), and so as to supply the cooled reducing gas to a shaft furnace (2), whereby the manufacture of the molten iron can be efficiently carried out, and a high thermal efficiency is realized even without a separate gas cooling device (11). Therefore, a separate cooling device (11) for cooling the hot reducing gas of the melter gasifier (5) is not required. Further, the hot reducing gas is naturally cooled at the calcination furnace (20), and therefore, the thermal efficiency of the hot reducing gas of the melter gasifier (5) is maximized. Further, a separate water-using cooler (11) and a separate compressor (12) are omitted, and therefore, the molten iron manufacturing facility is simplified.

公开(公告)号：EP0708703B1

公开(公告)日：1999-09-22

申请号：EP95918205.6

申请日：1995-05-10

申请人： POHANG IRON & STEEL CO., LTD. ,  RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY

发明人： KWON, Tai Hun Research Institute of Ind. Science ,  KIM, See Jo Research Institute of Ind. Science

IPC分类号： B29C47/64

CPC分类号： B29C47/605 ,  B29C47/0011

摘要： A chaos screw for a single screw extruder is disclosed, in which the structure is simple, and a superior mixing capability is provided without much modifying the existing structure, thereby realizing an improved chaotic mixing characteristic. The chaos screw includes: a plurality of screw flights for moving forward an extrusion material; a plurality of barriers provided between said screw flights; the barriers having a periodic structure (a)(b)-(a)(b)-(a)(b).... with barrier existing zones and barrier non-existing zones periodically repeated; and the barriers being formed on the whole melt conveying region in which the screw flights are formed, whereby a chaotic mixing of the extrusion material is realized. According to the present invention, there is obtained an effect such that, with a slight modification of the structure, a superior material mixing capability is obtained.

公开(公告)号：EP0931167A1

公开(公告)日：1999-07-28

申请号：EP97912116.0

申请日：1997-10-06

申请人： VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH ,  POHANG IRON & STEEL CO., LTD. ,  RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY

发明人： GENNARI, Udo ,  KEPPLINGER, Leopold, Werner ,  WALLNER, Felix

IPC分类号： C22B5 ,  C21B13 ,  F27D3

CPC分类号： C21B13/0006 ,  C21B13/14 ,  C21B2100/64 ,  Y02P10/136

摘要： A device (29) for dosed introduction of a fine particle material into a reactor vessel (10) comprising a fluidized bed transfer canal (31) into which a material feeding device (9) opens from the top and into which a gas supply device (33) opens in its lower area, introducing a fluidization gas and presenting an overflow tube (34) to forward the fine particle material. In order to obtain dosed introduction of fine particle material into reactor vessel (10) a plurality of fluidized bed transfer canals (35) are located outside the reactor vessel (10) with overflow tubes (37) protruding inside the reactor vessel (10).

公开(公告)号：EP0896636A1

公开(公告)日：1999-02-17

申请号：EP97947980.0

申请日：1997-12-19

申请人： POHANG IRON & STEEL CO., LTD. ,  RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY ,  VOEST-ALPINE INDUSTRIEANLAGENBAU GESELLSCHAFT m.b.H.

发明人： JOO, Sang Hoon, Research Institute ,  CHO, Min Young, Research Institute ,  LEE, Il Ock, Research Institute

IPC分类号： C21B11 ,  C21B13 ,  F27B1 ,  F27D3

CPC分类号： C21B13/002 ,  C21B13/14 ,  C21B2100/44 ,  F27D3/0025 ,  F27D3/08 ,  Y02P10/136 ,  Y02P10/216

摘要： A smelting reduction apparatus and a method for producing molten pig iron are disclosed. Iron ore, sintered or pelletised iron are used, so that the discharge operation from a pre-reducing furnace (12) to a melter-gasifier (11) would not give any influence to the operation of the pre-reducing furnace (12). The apparatus consists of a pre-reducing furnace (12), a melter-gasifier (11), an ascending duct (13) for supplying the off-gas of the melter-gasifier (11) as a reducing gas to the pre-reducing furnace (12) via a cyclone (14), and a recycling duct (14a, 15a) for the fine ore separated at said cyclone (14) to be spouted through a melter-burner (16) into the melter-gasifier (11). A part of the reducing off-gas which has passed through said cyclone (14) is supplied through a ventury scrubber (17), a compressor (18) and a compressed gas circulating duct (19) into the ascending duct (13). In such an apparatus, a reduced iron discharge device (222) is installed between the pre-reducing furnace (12) and the melter-gasifier (11).