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1. 发明公开

EP1253207A4 METHOD AND FACILITIES FOR METAL SMELTING 审中-公开
标题翻译：方法和设备用于熔化金属
公开(公告)号：EP1253207A4
公开(公告)日：2003-05-28
申请号：EP00956840
申请日：2000-08-31
申请人： NIPPON KOKAN KK
发明人： IWASAKI KATSUHIRO , ISOZAKI SHINICHI , SEKIGUCHI TAKESHI , TAGUCHI NORIHIKO
IPC分类号： C21B13/10 , C21B13/14 , C22B1/245 , C22B5/10 , C21B11/00 , C21B13/00 , C22B1/16
CPC分类号： C21B13/10 , C21B13/105 , C21B13/14 , C22B1/245 , C22B5/10 , Y02P10/136 , Y02P10/143
摘要： A method for metal smelting, which comprises a step of pre-reducing a mixed raw material provided by mixing in advance or mixing-granulating or mixing-molding at least a metal oxide and/or hydroxide and a carbonaceous material in a pre-reduction furnace such as a rotary hearth type or rotary kiln type furnace so that 5 to 55 % of the metal oxide and/or hydroxide is reduced to metallic state on average, and a step of charging the pre-reduced mixed material to a smelting furnace for use in metal smelting and melting and finally reducing the material in the smelting furnace by using a carbonaceous material as a reducing agent and utilizing the combustion heat of the carbonaceous material and that of the carbon monoxide generated in the furnace as main heat sources. The method allows the production of a molten metal with good energy balance and high efficiency in production, and thus enables the production of a molten metal by the smelting reduction of a metal oxide and/or hydroxide such as an iron ore with high productivity and at a low cost.

2. 发明专利

AU751764B2 Structure of metallurgical furnace and operating method using the same metallurgical furnace 未知
公开(公告)号：AU751764B2
公开(公告)日：2002-08-29
申请号：AU9462998
申请日：1998-10-19
申请人： NIPPON KOKAN KK
发明人： YAMANAKA MITSUHIRO , WATANABE MASAYUKI , SEKIGUCHI TAKESHI , TAGUCHI NORIHIKO , IWASAKI KATSUHIRO , ISOZAKI SHINICHI , KAWAKAMI MASAHIRO , SAWADA TERUTOSHI , KIMURA AKISHI
IPC分类号： C21B11/00 , C21C5/42 , C21C5/52 , F27B3/12 , F27D1/12 , F27D99/00 , F27D3/14 , F27B3/16 , C21C5/46 , C21C7/00
摘要： A metallurgical furnace which comprises a furnace body shell, a bottom wall comprising lining bricks provided on an inner side of the furnace body shell, and a side wall comprising water-cooled metal panels provided on the inner side of the furnace body shell, wherein metal partitions are provided among the water-cooled metal panels, a furnace body comprises upper and lower vessels, which can be separated from each other, and which are provided therebetween with a seal means, a hot metal as a seed molten metal is introduced from a pan to a tap hole via an introduction passage, and a residual molten metal is discharged from an enlarged bottom-blown nozzle port.

3. 发明专利

DE69119623D1 未知
公开(公告)号：DE69119623D1
公开(公告)日：1996-06-27
申请号：DE69119623
申请日：1991-02-27
申请人： NIPPON KOKAN KK
发明人： MATSUO MASAHIRO , KANATANI GENJI , KAWATA HITOSHI , ARIYAMA TATUROU , MASE JIROU , KITANO YOSHIYUKI , TSUBOI HARUHITO , ISOZAKI SHINICHI
IPC分类号： C21B13/14
摘要： The invention relates to a prereduction furnace of a smelting reduction facility of iron ore consisting of a fluidizing prereduction chamber (15) installed at the upper part of the prereduction furnace (2) in which iron ores are fed and prereduced, a gas blowing chamber (14) installed at the lower part of the prereduction furnace (2) into which a reducing gas is fed, a ceramic main body (30) of a distributor (12) installed between the fluidizing prereduction chamber (15) and the gas blowing chamber (14), a metal box (31) attached to the bottom side of the main body (30), in which a cooling fluid flows, which prevents adhesion of dust in the reducing gas, nozzles (13) passing through the main body (30) and the metal box (31) for injecting the reducing gas in the blowing chamber (14) into the prereduction chamber (15) and a discharge pipe (19) for discharging prereduced iron ores installed at a bottom center of the prereduction chamber (15) extending through the ceramic main body (30), the metal box (31), and a bottom of the gas blowing chamber (14).

4. 发明专利

CA2044638A1 PREREDUCTION FURNACE OF A SMELTING REDUCTION FACILITY OF IRON ORE 未知
公开(公告)号：CA2044638A1
公开(公告)日：1991-12-17
申请号：CA2044638
申请日：1991-06-14
申请人： NIPPON KOKAN KK
发明人： ARIYAMA TATSURO , MASE JIRO , KITANO YOSHIYUKI , ARAKAWA SAKAE , TSUBOI HARUHITO , ISOZAKI SHINICHI , KAWATA HITOSHI , KANATANI GENJI
IPC分类号： C21B13/00 , C21B13/14
摘要： A prereduction furnace of a smelting reduction facility comprises a fluidizing prereduction chamber in the upper part of the prereduction furnace wherein iron ores are fed and prereduced, a gas blowing chamber installed in the lower part of the prereduction furnace wherein a reducing gas is fed, a distributor for separating the fluidizing prereduction chamber from the blowing chamber, and a discharge pipe for discharging the prereduced ore from the fluidizing prereduction chamber. The distributor includes a body of refractory material, a metal plate installed on the bottom of the body, nozzles passing through the body and the metal plate, metallic pipes inserted in the nozzles, and cooling pipes connected to the metal plate. A metallic box may be installed below the metal plate for providing passages for letting a gas flow. A bottom plate may be installed spacedly below the metal plate, with nozzles passing therethrough. The distributor may comprise a rigid thick plate and a refractory layer thereon.

5. 发明专利

CA2031473A1 METHOD FOR CONTROLLING A FLOW RATE OF GAS FOR PREREDUCING ORE AND APPARATUS THEREFOR 未知
公开(公告)号：CA2031473A1
公开(公告)日：1991-06-05
申请号：CA2031473
申请日：1990-12-04
申请人： NIPPON KOKAN KK
发明人： ARIYAMA TATSURO , ISOZAKI SHINICHI , YAMADA KENZO , MATSUO MASAHIRO , KANATANI GENJI
IPC分类号： C21B13/14
摘要： The invention relates to a method for controlling a flow rate of gas for prereducing ore comprising the steps of prereducing ore in a prereduction furnace (2) having a fluidized bed (5) by use of gas generated in a smelting reduction furnace (1) and controlling a pressure of gas generated in the smelting reduction furnace and introduced into the prereduction furnace, an actual flow rate of gas introduced into the prereduction furnace being controlled. An apparatus is also described for controlling a flow rate of gas for prereducing ore, and comprises a flow passage (3) for introducing gas generated in a smelting reduction furnace (1) into a prereduction furnace (2) and a gas pressure control valve (l6) positioned in the flow passage.

6. 发明专利

CA2383860A1 METHOD AND FACILITIES FOR METAL SMELTING 未知
公开(公告)号：CA2383860A1
公开(公告)日：2001-03-15
申请号：CA2383860
申请日：2000-08-31
申请人： NIPPON KOKAN KK
发明人： TAGUCHI NORIHIKO , IWASAKI KATSUHIRO , SEKIGUCHI TAKESHI , ISOZAKI SHINICHI
IPC分类号： C21B13/10 , C21B13/14 , C22B1/245 , C22B5/10 , C21B11/00 , C22B1/16
摘要： A method for metal smelting, which comprises a step of pre-reducing a mixed raw material provided by mixing in advance or mixing-granulating or mixing- molding at least a metal oxide and/or hydroxide and a carbonaceous material in a pre-reduction furnace such as a rotary hearth type or rotary kiln type furnace so that 5 to 55 % of the metal oxide and/or hydroxide is reduced to metallic state on average, and a step of charging the pre-reduced mixed material to a smelting furnace for use in metal smelting and melting and finally reducing the material in the smelting furnace by using a carbonaceou s material as a reducing agent and utilizing the combustion heat of the carbonaceous material and that of the carbon monoxide generated in the furna ce as main heat sources. The method allows the production of a molten metal wit h good energy balance and high efficiency in production, and thus enables the production of a molten metal by the smelting reduction of a metal oxide and/ or hydroxide such as an iron ore with high productivity and at a low cost.

7. 发明专利

ES2084060T3 未知
公开(公告)号：ES2084060T3
公开(公告)日：1996-05-01
申请号：ES91109752
申请日：1991-06-14
申请人： NIPPON KOKAN KK
发明人： ARIYAMA TATSURO , MASE JIRO , KITANO YOSHIYUKI , ARAKAWA SAKAE , TSUBOI HARUHITO , ISOZAKI SHINICHI
IPC分类号： C21B13/00 , C21B13/14
摘要： A prereduction furnace of a smelting reduction facility comprises a fluidizing prereduction chamber (6) in the upper part of the prereduction furnace wherein iron ores are fed and prereduced, a gas blowing chamber (7) installed in the lower part of the prereduction furnace wherein a reducing gas is fed, a distributor (8) for separating the fluidizing prereduction chamber from the blowing chamber, and a discharge pipe (14) for discharging the prereduced ore from the fluidizing prereduction chamber. The distributor includes a body (11) of refractory material, a metal plate (12) installed on the bottom of the body, nozzles (15) passing through the body and the metal plate, metallic pipes (16) inserted in the nozzles, and cooling pipes (17) connected to the metal plate. A metallic box may be installed below the metal plate for providing passages for letting a gas flow. A bottom plate may be installed spacedly below the metalplate, with nozzles passing therethrough. The distributor may comprise a rigid thick plate and a refractory layer thereon.

8. 发明专利

CA2036972C PREREDUCTION FURNACE OF A SMELTING REDUCTION FACILITY OF IRON ORE 未知
公开(公告)号：CA2036972C
公开(公告)日：1994-12-27
申请号：CA2036972
申请日：1991-02-25
申请人： NIPPON KOKAN KK
发明人： MATSUO MASAHIRO , KANATANI GENJI , KAWATA HITOSHI , ARIYAMA TATSURO , MASE JIRO , KITANO YOSHIYUKI , TSUBOI HARUHITO , ISOZAKI SHINICHI
IPC分类号： C21B13/14 , F27B15/10 , F27B15/00
摘要： A prereduction furnace of a smelting reduction facility of iron ore consisting of a fluidizing prereduction chamber installed at the upper part of the prereduction furnace wherein iron ores are fed and prereduced, a gas blowing chamber installed at the lower part of the prereduction furnace wherein a reducing gas is fed, a ceramic main body of a distributor installed between the fluidizing prereduction chamber and the gas blowing chamber, a metal box attached to the bottom side of the main body, wherein a cooling fluid flows, which prevent adhesion of dusts in the reducing gas, nozzles passing through the main body and the metal box for injecting the reducing gas in the blowing chamber into the prereduction chamber and a discharge pipe for discharging prerduced iron ores installed at a bottom center of the prereduction chamber extending through the ceramic main body, the metal box, and a bottom of the gas blowing chamber.

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