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    • 82. 发明授权
    • BLAST FURNACE OPERATION METHOD AND LANCE
    • 高炉操作方法和LANCE
    • EP2982768B1
    • 2017-05-24
    • EP14780034.6
    • 2014-03-27
    • JFE Steel Corporation
    • FUJIWARA DaikiMURAO AkinoriKAJISA TakeshiTOKUDOME Mitsushi
    • C21B7/00C21B5/00F27B1/16C21B7/16C21B5/02
    • C21B7/163C21B5/001C21B5/02F27B1/16
    • [Task] It is to propose a blast furnace operation method capable of improving the combustibility of pulverized coal blown through a tuyere and increasing the cooling ability as well as decreasing the specific consumption of the reducing material. [Solution for task] A method of operating a blast furnace by blowing a solid reducing material, a flammable gaseous reducing material and a combustible gas into a blast furnace from tuyeres through a lance into a blast furnace, wherein a parallel type lance prepared by bundling three independent blowing tubes in parallel and integrally housing them into an outer tube is used, and either one or both of the gaseous reducing material and the combustible gas and the solid reducing material are simultaneously blown through the respective blowing tubes, while the blowing tube for the solid reducing material and the blowing tube for the gaseous reducing material are positioned above the blowing tube for the combustible gas in the blowing through the parallel type lance as well as a lance structure thereof.
    • [作用]提出一种高炉操作方法,其能够改善通过风口吹送的粉煤的可燃性并增加冷却能力以及减少还原材料的比耗。 [任务的解决方案]一种使固体还原材料,可燃性气体还原材料及可燃性气体从风口经由喷枪向高炉内吹入高炉内而使高炉工作的方法,其特征在于, 使用3个独立的并列吹入管,将它们一体地收纳在外筒中,并且使气体还原材料和可燃性气体以及固体还原材料中的一方或双方同时通过各自的吹出管吹出,吹出管 用于气体还原材料的固体还原材料和吹气管位于通过平行型喷枪吹入的可燃气体吹管和吹氧管结构的上方。
    • 83. 发明公开
    • BLAST FURNACE OPERATION METHOD
    • BETRIEBSVERFAHRENFÜREINEN VERBRENNUNGSOFEN
    • EP2653565A4
    • 2017-03-15
    • EP11856543
    • 2011-07-15
    • JFE STEEL CORP
    • MURAO AKINORIFUJIWARA DAIKIWATAKABE SHIROKITAHARA MASAYUKI
    • C21B5/00C21B5/06C21B7/00C21B7/16
    • C21B5/06C21B5/003C21B7/163C21B2005/005C21B2100/26C21B2100/60Y02P10/283
    • Provided is a method for operating a blast furnace in which further improvement in combustion temperature and further reduction of the specific consumption of reducing agents are possible. By injecting all of pulverized coal (PC: solid reducing agent), a utility gas (inflammable reducing agent) and O 2 (combustion improving gas) so that each of these are separately injected thorough any one of the inner tube lance, the intermediate tube lance and the outer tube lance which constitute a triple tube lance, there is, for example, an explosive diffusion of the pulverized coal caused by the O 2 and the utility gas burning in first and, at the same time, there is a significant increase in the temperature of the pulverized coal due to the combustion heat of the utility gas, which results in an increase in the heating rate of the pulverized coal and a significant improvement in the combustion temperature, which makes it possible to decrease the specific consumption of the reducing agents. In addition, by injecting some of oxygen to be added to a injected air through the triple tube lance, the excessive supply of oxygen to be used can be avoided and the specific consumption of O 2 can be decreased while gas balance in a blast furnace is maintained.
    • 本发明提供一种高炉的运转方法,能够进一步提高燃烧温度,并且能够进一步降低还原剂的比耗。 通过将所有粉煤(PC:固体还原剂),商用气体(可燃性还原剂)和O 2(燃烧改善气体)全部注入,使得这些中的每一个通过内管矛杆,中间管 例如,构成三管喷枪的喷枪和外管喷枪中,首先由O 2和公用燃气引起的煤粉的爆炸性扩散,并且同时显着增加 在由煤气的燃烧热引起的粉煤温度中,导致煤粉加热速率增加和燃烧温度显着提高,这使得可以降低 还原剂。 另外,通过从三重管喷枪喷射注入的空气中的一部分氧气,能够避免所使用的氧气的过剩供给,并且能够降低高炉中的气体平衡的同时消耗O 2的比耗量 保持。
    • 84. 发明公开
    • METHOD FOR OPERATING BLAST FURNACE
    • BETREBSVERFAHRENFÜREINEN VERBRENNUNGSOFEN
    • EP2653564A4
    • 2017-03-08
    • EP11856222
    • 2011-07-15
    • JFE STEEL CORP
    • FUJIWARA DAIKIMURAO AKINORIWATAKABE SHIROMORIKAWA YASUYUKI
    • C21B5/00C21B5/06C21B7/00C21B7/16
    • C21B5/001C21B5/003C21B5/06C21B7/163C21B2100/26C21B2100/60Y02P10/283
    • Provided is a method for operating a blast furnace in which further improvement in combustion temperature and further reduction of the specific consumption of reducing agents are possible. The mixture of a solid reducing agent and an inflammable reducing agent is injected through the same tube constituting a lance 4. For example, a solid reducing agent and an inflammable reducing agent are mixed and the mixture thereof is injected through a single tube lance 4. In addition, using a double tube lance 4 as the lance, while the mixture of a solid reducing agent and an inflammable reducing agent is injected through the inner tube of the double tube lance 4, a combustion improving gas is injected through the outer tube of the double tube lance. In addition, using a double tube lance 4 as the lance, while a combustion improving gas is injected through the inner tube of the double tube lance 4, the mixture of a solid reducing agent and an inflammable reducing agent is injected through the outer tube of the double tube lance. The solid reducing agent mainly consists of pulverized coal, and a utility gas, converter gas, blast furnace gas, coke oven gas and hydrogen are used as the inflammable reducing agent. O 2 is used as the combustion improving gas.
    • 提供了一种操作高炉的方法,其中可以进一步提高燃烧温度并进一步降低还原剂的比消耗。 通过构成喷枪4的同一管道注入固体还原剂和易燃还原剂的混合物。例如,固体还原剂和可燃性还原剂混合,其混合物通过单管喷枪4注入。 此外,使用双管喷枪4作为喷枪,同时通过双管喷枪4的内管注入固体还原剂和可燃性还原剂的混合物,通过外管喷射燃烧改善气体 双管枪。 此外,使用双管喷枪4作为喷枪,同时通过双管喷枪4的内管喷射燃烧改善气体,固体还原剂和易燃还原剂的混合物通过外管 双管枪。 固体还原剂主要由粉煤组成,用作燃气,转炉煤气,高炉煤气,焦炉煤气和氢气作为易燃还原剂。 O 2用作燃烧改进气体。
    • 90. 发明公开
    • TUYERE FOR AN IRONWORKS INDUSTRIAL FURNACE
    • EENEN INDUSTRIELLEN EISENOFENDÜSEFÜR
    • EP2669388A1
    • 2013-12-04
    • EP11857092.8
    • 2011-08-02
    • Seoul Engineering Co., Ltd.
    • LEE, Hae-Yang
    • C21B7/16
    • F27B1/16C21B7/163C21C5/48F27D1/16
    • A tuyere for an iron making furnace, including a body unit having a blast passage passing through a central axis thereof, wherein the body unit includes: a frusto-conical body having a main body cooling passage; and a protruding part protruding from the body, wherein the tuyere further includes: a cover unit combined with the protruding part and defining a tip body cooling passage between the cover unit and the outer circumferential surface of the protruding part; and an outer unit combined with the cover unit while surrounding the cover unit and defining an outer cooling passage therein. When the outer unit is partially damaged, although the cooling water supply to the damaged part is cut off, the function of the tuyere can be continuously performed both by the remaining part of the outer unit and by the body unit, thereby providing a tuyere having a lengthened life span.
    • 一种用于制铁炉的风口,包括具有通过其中心轴线的鼓风通道的主体单元,其中主体单元包括:具有主体冷却通道的截头圆锥体; 以及突出部,其从所述主体突出,其中所述风口还包括:盖单元,与所述突出部结合并且在所述盖单元和所述突出部的外周表面之间限定顶端主体冷却通道; 以及与盖单元组合的外部单元,同时围绕盖单元并且在其中限定外部冷却通道。 当外部单元被部分损坏时,尽管向损坏部分供应的冷却水被切断,但是可以通过外部单元的剩余部分和主体单元连续地执行风口的功能,从而提供具有 延长使用寿命