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1.发明申请公开(公告)号：US20110226092A1
公开(公告)日：2011-09-22
申请号：US13117231
申请日：2011-05-27
IPC分类号： C21B15/00
CPC分类号： C22B5/10 , C21B13/0046 , C21B13/0086 , C21B13/105 , C21B13/143 , C21B2100/44 , C21B2100/60 , C21B2100/66 , C21C2100/06 , C22B1/2406 , C22B1/245 , F27B3/22 , F27B7/00 , F27B19/04 , Y02P10/136 , Y02P10/216
摘要： A process for producing molten iron with a combination of a moving-hearth reducing furnace and an iron bath-type melting furnace includes a step of charging a bedding carbonaceous material having an average particle diameter of 1 to 5 mm on a hearth of the moving-hearth reducing furnace and placing carbonaceous material-containing agglomerates containing a powdery iron oxide source and a powdery carbonaceous reductant on the bedding carbonaceous material; a step of thermally reducing the carbonaceous material-containing agglomerates while moving the hearth in the moving-hearth reducing furnace to generate solid reduced iron and simultaneously thermally carbonizing the bedding carbonaceous material to generate char; a step of continuously charging the solid reduced iron and the char into the iron bath-type melting furnace from thereabove without substantial cooling; and a step of blowing oxygen-containing gas into the iron bath-type melting furnace to melt the solid reduced iron and to thereby generate molten iron. According to this method, the amount of carbonaceous materials scattered into discharge gas can be significantly reduced and the yield of carbonaceous materials of the whole process can be improved.
摘要翻译： 通过移动底板还原炉和铁浴式熔融炉的组合生产铁水的方法包括将平均粒径为1至5mm的床上含碳材料装入移动炉底炉的炉床上的步骤， 炉底还原炉，将含有粉状氧化铁源和粉状碳质还原剂的含碳材料的聚集体放置在上层碳质材料上; 同时在移动炉床还原炉中移动炉床的同时热还原含碳质材料的附聚物的步骤以产生固体还原铁，同时热处理含碳质材料以产生炭; 将固体还原铁和焦炭从上方连续充入铁浴型熔炉中而不实质冷却的步骤; 以及将含氧气体吹入铁浴式熔融炉中以熔化固体还原铁并由此产生铁水的步骤。 根据该方法，可以显着降低散逸到放电气体中的碳质材料的量，并且可以提高整个过程中碳质材料的产率。
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公开(公告)号：US20070295165A1
公开(公告)日：2007-12-27
申请号：US11666830
申请日：2005-10-26
申请人： Hidetoshi Tanaka , Tsuyoshi Mimura , Takao Harada , Kiminori Hajika , Tadashi Yaso , Toshiyuki Kurakake
发明人： Hidetoshi Tanaka , Tsuyoshi Mimura , Takao Harada , Kiminori Hajika , Tadashi Yaso , Toshiyuki Kurakake
IPC分类号： C21B13/10
CPC分类号： C21B13/0066 , C21B13/0086 , C21B13/105 , C21B13/143 , C21B2100/44 , C21B2100/66 , C22B1/245 , C22B5/10 , Y02P10/136 , Y02P10/216
摘要： A bedding carbonaceous material is charged onto a hearth of a rotary hearth furnace, carbonaceous-material containing pellets containing powdery iron ore and powdery coal are placed on the bedding carbonaceous material, and the hearth is caused to pass inside the rotary hearth furnace to heat and reduce the carbonaceous-material containing pellets to solid reduced iron and to heat and dry the bedding carbonaceous material by distillation into char. Subsequently, the solid reduced iron and the char are charged into an iron-melting furnace without being substantially cooled, and an oxygen gas is blown into the iron-melting furnace to melt the solid reduced iron, thereby obtaining molten iron. At least a part of an exhaust gas from the iron-melting furnace is used as a fuel gas for the rotary hearth furnace after being cooled and having dust removed.
摘要翻译： 将床层碳质材料装入转底炉的炉床上，将含有粉状铁矿石和粉煤的颗粒的碳质材料放置在床上碳质材料上，并使炉床通过转底炉内加热和 将含碳材料的颗粒还原成固体还原铁，并通过蒸馏将床料碳质材料加热并干燥成炭。 随后，将固体还原铁和焦炭装入铁熔炉中而不被基本上冷却，并且将氧气吹入铁熔炉中以熔化固体还原铁，从而获得铁水。 来自铁熔炉的废气的至少一部分在被冷却并且除尘后被用作转底炉的燃料气体。
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3.发明授权公开(公告)号：US08277536B2
公开(公告)日：2012-10-02
申请号：US13117231
申请日：2011-05-27
CPC分类号： C22B5/10 , C21B13/0046 , C21B13/0086 , C21B13/105 , C21B13/143 , C21B2100/44 , C21B2100/60 , C21B2100/66 , C21C2100/06 , C22B1/2406 , C22B1/245 , F27B3/22 , F27B7/00 , F27B19/04 , Y02P10/136 , Y02P10/216
摘要： A process for producing molten iron with a combination of a moving-hearth reducing furnace and an iron bath-type melting furnace that includes charging a bedding carbonaceous material on a hearth of the moving-hearth reducing furnace and placing carbonaceous material-containing agglomerates containing a powdery iron oxide source and a powdery carbonaceous reductant on the bedding carbonaceous material; thermally reducing the carbonaceous material-containing agglomerates while moving the hearth in the moving-hearth reducing furnace to generate solid reduced iron and simultaneously thermally carbonizing the bedding carbonaceous material to generate char; hot-forming the solid reduced iron and the char into agglomerates without substantial cooling; continuously charging the agglomerates into the iron bath-type melting furnace from thereabove; and blowing oxygen-containing gas into the iron bath-type melting furnace to melt the solid reduced iron and to thereby generate molten iron.
摘要翻译： 一种通过移动底板还原炉和铁浴式熔融炉的组合生产铁水的方法，该方法包括在移动炉床还原炉的炉床上装入床层碳质材料，并放置含碳质的含有 粉状氧化铁源和层状碳质材料上的粉状碳质还原剂; 在移动炉床还原炉中移动炉床同时热还原含碳材料的附聚物，以产生固体还原铁，同时使含碳质材料热碳化以产生炭; 将固体还原铁和焦炭热成型为团聚体而没有实质的冷却; 将附聚物从上方连续地装入铁浴式熔融炉; 并将含氧气体吹入铁浴式熔融炉中以熔化固体还原铁并由此产生铁水。
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4.发明授权公开(公告)号：US07993430B2
公开(公告)日：2011-08-09
申请号：US12298201
申请日：2007-03-16
IPC分类号： C21B13/08
CPC分类号： C22B5/10 , C21B13/0046 , C21B13/0086 , C21B13/105 , C21B13/143 , C21B2100/44 , C21B2100/60 , C21B2100/66 , C21C2100/06 , C22B1/2406 , C22B1/245 , F27B3/22 , F27B7/00 , F27B19/04 , Y02P10/136 , Y02P10/216
摘要： The disclosure relates to improvements of technology for producing metallic iron by thermally reducing an iron source such as iron ore with a carbonaceous reductant such as coke by including efficiently reducing iron oxides into metallic iron at a lower operation temperature while conducting carburization, and efficiently separating the generated metallic iron from slag-forming components such as gangue components contained in raw material ore whereby metallic iron with controlled carbon concentrations can be produced in high yield.
摘要翻译： 本公开涉及通过在进行渗碳的同时在较低的操作温度下有效地将铁氧化物还原成金属铁，通过用碳质还原剂如焦炭热还原铁源例如铁矿石来改进生产金属铁的技术，并且有效地将 由原料矿中含有的ang石成分等成矿成分产生金属铁，从而可以高产率生产具有可控碳浓度的金属铁。
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5.发明申请公开(公告)号：US20090090216A1
公开(公告)日：2009-04-09
申请号：US12298201
申请日：2007-03-16
IPC分类号： C21B13/10
CPC分类号： C22B5/10 , C21B13/0046 , C21B13/0086 , C21B13/105 , C21B13/143 , C21B2100/44 , C21B2100/60 , C21B2100/66 , C21C2100/06 , C22B1/2406 , C22B1/245 , F27B3/22 , F27B7/00 , F27B19/04 , Y02P10/136 , Y02P10/216
摘要： A process for producing molten iron with a combination of a moving-hearth reducing furnace and an iron bath-type melting furnace includes a step of charging a bedding carbonaceous material having an average particle diameter of 1 to 5 mm on a hearth of the moving-hearth reducing furnace and placing carbonaceous material-containing agglomerates containing a powdery iron oxide source and a powdery carbonaceous reductant on the bedding carbonaceous material; a step of thermally reducing the carbonaceous material-containing agglomerates while moving the hearth in the moving-hearth reducing furnace to generate solid reduced iron and simultaneously thermally carbonizing the bedding carbonaceous material to generate char; a step of continuously charging the solid reduced iron and the char into the iron bath-type melting furnace from thereabove without substantial cooling; and a step of blowing oxygen-containing gas into the iron bath-type melting furnace to melt the solid reduced iron and to thereby generate molten iron. According to this method, the amount of carbonaceous materials scattered into discharge gas can be significantly reduced and the yield of carbonaceous materials of the whole process can be improved.
摘要翻译： 通过移动底板还原炉和铁浴式熔融炉的组合生产铁水的方法包括将平均粒径为1至5mm的床上含碳材料装入移动炉底炉的炉床上的步骤， 炉底还原炉，将含有粉状氧化铁源和粉状碳质还原剂的含碳材料的聚集体放置在上层碳质材料上; 同时在移动炉床还原炉中移动炉床的同时热还原含碳质材料的附聚物的步骤以产生固体还原铁，同时热处理含碳质材料以产生炭; 将固体还原铁和焦炭从上方连续充入铁浴型熔炉中而不实质冷却的步骤; 以及将含氧气体吹入铁浴式熔融炉中以熔化固体还原铁并由此产生铁水的步骤。 根据该方法，可以显着降低散逸到放电气体中的碳质材料的量，并且可以提高整个过程中碳质材料的产率。
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公开(公告)号：US08088195B2
公开(公告)日：2012-01-03
申请号：US11936549
申请日：2007-11-07
申请人： Hidetoshi Tanaka , Itsuo Miyahara , Hiroshi Uemura , Takao Harada , Hiroshi Sugitatsu , Isao Kobayashi
发明人： Hidetoshi Tanaka , Itsuo Miyahara , Hiroshi Uemura , Takao Harada , Hiroshi Sugitatsu , Isao Kobayashi
CPC分类号： C21B13/0006 , C21B13/006 , C21B13/008 , C21B13/105 , C21B13/14 , C21B13/143 , C21C5/54 , C22B34/1218 , C22B34/1281 , Y02P10/136 , Y02P10/216 , Y02P10/23
摘要： The present invention provides a method for efficiently manufacturing a titanium oxide-containing slag from a material including titanium oxide and iron oxide, wherein a reduction of titanium dioxide is suppressed and the electric power consumption is minimized. The method includes the steps of: heating a raw material mixture including titanium oxide, iron oxide, and a carbonaceous reductant, or the raw material mixture further including a calcium oxide source, in a reducing furnace; reducing the iron oxide in the mixture to form reduced iron; feeding the resultant mixture to a heating melting furnace; heating the resultant mixture in the heating melting furnace to melt the reduced iron and separate the reduced iron from a titanium oxide-containing slag; and discharging and recovering the titanium oxide-containing slag out of the furnace.
摘要翻译： 本发明提供了一种从包含氧化钛和氧化铁的材料有效地制造含氧化钛的炉渣的方法，其中抑制了二氧化钛的还原并使电力消耗最小化。 该方法包括以下步骤：在还原炉中加热包括氧化钛，氧化铁和碳质还原剂的原料混合物，或进一步包含氧化钙源的原料混合物; 减少混合物中的氧化铁以形成还原铁; 将所得混合物送入加热熔化炉; 在加热熔融炉中加热所得混合物以熔化还原铁并将还原铁与含氧化钛的炉渣分离; 并将含氧化钛的炉渣从炉中排出和回收。
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7.发明申请METHOD FOR PRODUCING REDUCED METAL AND SLAG CONTAINING OXIDIZED NONFERROUS METAL USING AN UPGRADED COAL 有权使用升级煤生产含有氧化非金属的还原金属和硅酸盐的方法公开(公告)号：US20100300247A1
公开(公告)日：2010-12-02
申请号：US12846425
申请日：2010-07-29
CPC分类号： C10L9/02 , C21B13/006 , C21B13/0066 , C21B13/10 , C21B13/105 , Y02P10/136
摘要： The present invention provides a method for producing a high-quality reduced metal using an upgraded coal as a carbonaceous material to be incorporated. In the method, coal is first aged by heating in an organic solvent to produce upgraded coal for metallurgy having higher thermal plasticity than that of the coal. Then, a mixture of the upgraded coal for metallurgy and a metal oxide-containing raw material is agglomerated by an agglomerator, and the resultant agglomerates are reduced by heating in a furnace and then melted by further heating to produce a reduced melt. The reduced melt is cooled and solidified in the furnace to produce a reduced solid. The reduced solid is discharged to the outside of the furnace and slag is removed using a screen to recover a metal as a reduced metal.
摘要翻译： 本发明提供一种使用升级煤作为掺入碳质材料制造高品质还原金属的方法。 在该方法中，首先通过在有机溶剂中加热来生产煤，以生产具有比煤的更高的热可塑性的用于冶金的升级煤。 然后，通过凝聚器将用于冶金的改质煤和含金属氧化物的原料的混合物凝聚，并且通过在炉中加热使所得附聚物减少，然后通过进一步加热熔融以产生还原的熔体。 将还原的熔体在炉中冷却并固化以产生还原的固体。 将还原的固体排出到炉外，并使用筛网去除渣，以回收作为还原金属的金属。
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公开(公告)号：US20100037728A1
公开(公告)日：2010-02-18
申请号：US12543798
申请日：2009-08-19
CPC分类号： C22B5/10 , C21B13/10 , C22B1/244 , C22B34/32 , Y02P10/136
摘要： An object of the present invention is to provide a method for reducing a chromium-containing material at a high chromium reduction degree. In the method of the present invention, a mixture of a feedstock containing chromium oxide and a carbonaceous reductant is heated and reduced by radiation heating in a moving hearth furnace. The average rate of raising the temperature of the mixture in the reduction is preferably 13.96° C./s or higher in the period from the initiation of the radiation heating of the mixture until the mixture reaches 1,114° C.
摘要翻译： 本发明的目的是提供一种在高铬还原度下还原含铬材料的方法。 在本发明的方法中，通过在移动的炉床炉中的辐射加热来加热和还原含有氧化铬和碳质还原剂的原料的混合物。 在从混合物的辐射加热开始到混合物达到1114℃之间的时间内，还原中混合物的温度升高的平均速率优选为13.96℃/秒或更高。
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公开(公告)号：US07572316B2
公开(公告)日：2009-08-11
申请号：US10763239
申请日：2004-01-26
IPC分类号： C21B13/08
CPC分类号： C21B13/10 , C21B13/0073 , Y02P10/136
摘要： A method for manufacturing a reduced metal includes thermally reducing a metal oxide including a carbonaceous reductant disposed on a hearth moving in a reducing furnace, wherein the reducing furnace includes a plurality of primary burners for supplying fuel and primary combustion air, and a plurality of secondary combustion burners for supplying secondary combustion air; and wherein the primary combustion air and/or the secondary combustion air is oxygen-enriched air, the oxygen concentration in the primary combustion air supplied from at least one of the plurality of primary burners being controlled to be lower than the oxygen concentration in the secondary combustion air.
摘要翻译： 还原金属的制造方法包括：热还原金属氧化物，其包括设置在还原炉中移动的炉床上的碳质还原剂，其中所述还原炉包括用于供给燃料和初级燃烧空气的多个主燃烧器，以及多个次级 用于供应二次燃烧空气的燃烧燃烧器; 并且其中所述主燃烧空气和/或所述二次燃烧空气是富氧空气，将从所述多个主燃烧器中的至少一个供给的所述一次燃烧空气中的氧浓度控制为低于所述二次燃烧器中的氧浓度 燃烧空气。
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公开(公告)号：US06811759B2
公开(公告)日：2004-11-02
申请号：US10445043
申请日：2003-05-27
申请人： Osamu Tsuchiya , Hidetoshi Tanaka , Takao Harada , Jun Jimbo , Shoichi Kikuchi , Yasuhiko Igawa
发明人： Osamu Tsuchiya , Hidetoshi Tanaka , Takao Harada , Jun Jimbo , Shoichi Kikuchi , Yasuhiko Igawa
IPC分类号： C01G4902
CPC分类号： C22B1/244 , C21B13/0046 , C21B13/105 , C22B1/2406 , C22B1/243 , C22B13/10 , Y10T428/12611 , Y10T428/24331 , Y10T428/24347
摘要： A method for producing an iron oxide pellet including the steps of adding water to a raw material mixture comprising iron oxide which serves as a primary component, a carbonaceous material in an amount sufficient for reducing the iron oxide, an organic binder in an amount sufficient for binding the iron oxide and the carbonaceous material, and an inorganic coagulant in an amount of not less than 0.05 mass % and less than 1 mass %; pelletizing the resultant mixture to thereby obtain a green pellet; and drying the green pellet until the moisture content is reduced to equal to or less than 1.0 mass %. The thus-produced iron oxide pellet is charged in a reducing furnace for reduction to thereby obtain a reduced iron pellet.
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