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公开(公告)号：US20090136887A1
公开(公告)日：2009-05-28
申请号：US12067422
申请日：2006-10-10
IPC分类号： F27B9/16
摘要： PROBLEM TO BE SOLVED: To provide a rotary hearth furnace which has a simple furnace structure in which the furnace is not damaged even if the furnace is operated for a long term while presenting general equations capable of adequately determining a thermal expansion margin in the rotary hearth furnace.SOLUTION: Between the corner refractory of the outer circumference side or the inner circumference side and the refractory, or between the refractories, a radius direction thermal expansion margin X defined by the following equation 2 is set, and if a width of the outer circumference side corner refractory 7 is given as A and a height of the hearth curb casting 11 of the corner refractory 7 is given as B, the following equation 1 is satisfied: X+A
摘要翻译： 要解决的问题：提供一种具有简单的炉结构的转底炉，即使炉长期运行也不会损坏炉子，同时具有能够适当地确定转炉的热膨胀裕度的一般方程式 炉。 解决方案：在外周侧或内周侧的角部耐火材料与耐火材料之间或在耐火材料之间设定由以下等式2限定的半径方向热膨胀裕度X，如果外周侧的宽度 拐角耐火材料7为A，角耐火材料7的炉底边缘铸件11的高度为B，满足以下等式1：＆lt;线内公式描述=“在线公式”结束= “lead”？> X + A <√（A2 + B2）等式1 <？in-line-formula description =“In-line Formulas”end =“tail”？> <？in-line-formula description =“In X =（[X 0 =]外周侧炉底边缘铸件11的外端部与内周侧炉底边缘铸件12的内端部之间的距离，线状公式“end =”lead“ 操作温度） - （[X1 =]多个耐火材料6和拐角耐火材料7和8在室温下的半径方向上的总长度） 公式2 <？in-line-formula description =“In-line Formulas”end =“tail”？>
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公开(公告)号：US07922484B2
公开(公告)日：2011-04-12
申请号：US12067422
申请日：2006-10-10
摘要： To provide a rotary hearth furnace which has a simple furnace structure in which the furnace is not damaged even if the furnace is operated for a long term while presenting general equations capable of adequately determining a thermal expansion margin in the rotary hearth furnace.
摘要翻译： 为了提供一种具有简单的炉结构的转炉式炉，即使炉长期运行也不会损坏炉子，同时具有能够适当地确定转底炉的热膨胀裕度的一般方程式。
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公开(公告)号：US07032526B2
公开(公告)日：2006-04-25
申请号：US10223367
申请日：2002-08-20
CPC分类号： F23G5/12 , F23G5/02 , F23G5/26 , F23G5/46 , F23G5/50 , F23G2203/805 , F23G2207/30 , F23L7/007 , F23L9/02 , Y02E20/344
摘要： The present invention can provide a method for combustion treatment capable of efficiently treating combustible waste, and a combustion treatment apparatus capable of realizing such a method. The present invention can further provide a method for combustion treatment capable of efficiently treating even combustible waste containing a generation source of a volatile hazardous component, and a combustion treatment apparatus capable of realizing this. Furthermore, the present invention can provide a method for combustion treatment capable of efficiently recovering and making effective use of the heat of an exhaust gas discharged during a treatment of combustible waste, and a combustion treatment apparatus capable of realizing this. The aforementioned method for combustion treatment is a method for treating combustible waste, in which the combustible waste is subjected to combustion treatment in a rotary hearth furnace.
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公开(公告)号：US06918947B2
公开(公告)日：2005-07-19
申请号：US10395340
申请日：2003-03-25
申请人： Takeshi Maki , Yoshiyuki Matsui , Takeshi Sugiyama , Takao Harada , Masahiko Tetsumoto , Hiroshi Tamazawa , Tadashi Ueda , Koichi Morioka , Nobuyuki Iwasaki , Hidetoshi Tanaka , Kojiro Fuji , Hiroshi Sugitatsu
发明人： Takeshi Maki , Yoshiyuki Matsui , Takeshi Sugiyama , Takao Harada , Masahiko Tetsumoto , Hiroshi Tamazawa , Tadashi Ueda , Koichi Morioka , Nobuyuki Iwasaki , Hidetoshi Tanaka , Kojiro Fuji , Hiroshi Sugitatsu
CPC分类号： C22B19/30 , C21B13/0046 , C21B13/105 , C22B1/245 , C22B5/10 , C22B5/16 , Y02P10/216
摘要： A method for making reduced iron using blast-furnace sludge is provided. The method includes a mixing step of mixing the blast-furnace sludge and an iron-oxide-containing powder to prepare a mixed material, an agglomerating step of agglomerating the mixed material to form agglomerates, a feeding step of feeding the agglomerates onto a continuously moving hearth, and a reducing step of heating the agglomerates to remove zinc and reduce the agglomerates.
摘要翻译： 提供了使用高炉污泥制造还原铁的方法。 该方法包括混合高炉污泥和含铁氧化物的粉末以制备混合材料的混合步骤，使混合材料凝聚以形成附聚物的附聚步骤，将附聚物进料到连续移动的进料步骤 炉底，以及还原步骤，加热附聚物以除去锌并还原附聚物。
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公开(公告)号：US20060096420A1
公开(公告)日：2006-05-11
申请号：US10541457
申请日：2003-12-26
IPC分类号： C21B15/00
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 13.6° 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13.6℃/秒或更高。
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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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公开(公告)号：US20110011209A1
公开(公告)日：2011-01-20
申请号：US12934453
申请日：2009-03-24
CPC分类号： C21C5/35
摘要： A method for producing molten iron by melting an iron source material using an iron bath-type melting furnace comprising a top-blowing lance at an upper part of the furnace, a bottom-blowing tuyere in the bottom of the furnace and a tap hole at a lower part on the side of the furnace, the method comprising: a melting process of charging the iron source material, a carbonaceous material and a flux into the furnace and top-blowing an oxygen-containing gas through the top-blowing lance while blowing an inert gas through the bottom-blowing tuyere into melt present in the furnace to stir the melt to thereby melt the iron source material and generate the molten iron and slag using combustion heat of combusting carbon in the carbonaceous material and/or in the molten iron, wherein the melting process has at least one tapping process of discharging the molten iron and the slag through the tap hole while holding a position of the furnace in generating the molten iron, and the tapping process continues or interrupts generation of the molten iron and continues top-blowing of the oxygen-containing gas to thereby keep a temperature of the molten iron in the furnace at or above a pre-set lowest temperature of the molten iron.
摘要翻译： 一种使用铁浴式熔融炉熔化铁源材料的方法，所述铁浴型熔炉包括炉顶部的顶吹喷枪，炉底部的底吹风口， 在炉的一侧的下部，该方法包括：将铁源材料，碳质材料和助熔剂装入炉中并通过顶吹喷枪吹送含氧气体同时吹送的熔融过程 将通过底吹风口的惰性气体熔化成存在于炉中的熔体，以搅拌熔体，从而熔化铁源材料，并使用碳质材料和/或铁水中燃烧碳的燃烧热产生铁水和炉渣 其中熔融过程具有至少一个排出铁水和炉渣通过排出孔同时保持炉子产生铁水的位置的出钢过程，并且出钢过程co 指示或中断铁水的产生并继续顶吹含氧气体，从而使炉中的铁水的温度保持在铁水的预设最低温度以上。
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公开(公告)号：US20100180723A1
公开(公告)日：2010-07-22
申请号：US12678533
申请日：2008-09-18
申请人： Hideaki Fujimoto , Tsuyoshi Mimura , Itsuo Miyahara , Takao Harada , Masataka Tateishi , Hiroshi Sugitatsu
发明人： Hideaki Fujimoto , Tsuyoshi Mimura , Itsuo Miyahara , Takao Harada , Masataka Tateishi , Hiroshi Sugitatsu
IPC分类号： C21B13/12
CPC分类号： F27B3/08 , C21B11/10 , C21B13/004 , C21B13/008 , C21C7/0025 , C21C7/0087 , C21C7/072 , C21C2007/0062 , Y02P10/136
摘要： A method for manufacturing molten iron includes a step of charging a carbonaceous material, a flux, and solid reduced iron obtained by thermally reducing carbon composite iron oxide agglomerates into an arc melting furnace and melting the solid reduced iron using arc heating in the melting furnace while an inert gas is blown into a molten iron layer contained in the melting furnace from a bottom blowing tuyere disposed on a bottom of the melting furnace to stir the molten iron layer, wherein the carbonaceous material is charged so that a carbonaceous material suspending slag layer in which the carbonaceous material is suspended is formed in an upper portion of a slag layer formed on the molten iron layer by slag produced when the solid reduced iron is melted into the molten iron and so that a carbonaceous material coating layer composed of only the carbonaceous material is further formed on the carbonaceous material suspending slag layer, and the molten iron and the slag stored in the melting furnace are tapped from a tap hole formed in a lower portion of a furnace wall of the melting furnace.
摘要翻译： 一种制造铁水的方法包括：将通过将碳复合氧化铁附聚物热还原成电弧熔化炉而获得的碳质材料，助熔剂和固体还原铁的步骤，并且在熔融炉中使用电弧加热熔化固体还原铁， 将惰性气体从设置在熔炉的底部的底吹风口吹入熔融炉内所含的铁水层中，搅拌铁水层，其中将碳质材料加入到含碳材料中， 通过在固体还原铁熔融到铁水中时产生的炉渣形成在铁水层上形成的炉渣层的上部，由此，碳质材料涂层仅由碳质材料构成 进一步形成在碳质材料悬浮渣层上，并将铁水和渣储存在炉渣中 熔融炉从形成在熔炉的炉壁的下部的抽头孔中抽出。
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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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10.发明授权公开(公告)号：US06797034B2
公开(公告)日：2004-09-28
申请号：US10154962
申请日：2002-05-28
IPC分类号： C12B1314
CPC分类号： C21B13/0073 , C10B47/30 , C21B13/00 , C21B13/10 , C21B2100/44 , C21B2100/64 , Y02P10/136
摘要： A method of producing reduced metals is disclosed in which a mixture of a metal oxide and a reducing agent is heated by a burner such that the metal oxide is reduced to a reduced metal. Dry-distilled gas generated during carbonization of an organic matter-containing component is used as fuel for the burner. The sensible heat of exhaust gas evolved by the burner is utilized as heat for carbonizing the organic matter-containing component. Carbide derived by carbonizing the organic matter-containing component is used as the above reducing agent. This method yields excellent cost performance. An apparatus for reducing metal oxides is also disclosed.
摘要翻译： 公开了一种生产还原金属的方法，其中金属氧化物和还原剂的混合物通过燃烧器加热，使得金属氧化物还原成还原金属。 作为燃烧器的燃料，使用含有机物成分的碳化时产生的干蒸馏气体。 由燃烧器放出的废气的显热用作用于碳化含有机物的组分的热。 使用通过碳化含有机物成分得到的硬质合金用作上述还原剂。 这种方法可以获得出色的性价比。 还公开了还原金属氧化物的装置。
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