Apparatus for electric steelmaking
    1.
    发明授权
    Apparatus for electric steelmaking 失效
    电炼炼设备

    公开(公告)号:US5714113A

    公开(公告)日:1998-02-03

    申请号:US520685

    申请日:1995-08-29

    摘要: A burner/injector for providing a localized impingement flame or multiple flames for scrap heating and melting through use of a fluid fuel and at least one oxygen rich oxidizing gas. The burner/injector includes a liquid-cooled combustor for generating an impinging flame directed toward a scrap pile and a structure for injecting a controllable amount of a solid carbonaceous fuel and a controllable flow of high velocity oxidizing gas into space that has been previously occupied by the impinging flame. The burner/injector may be equipped to inject a solid slag forming materials and/or slag deoxidizing materials, and/or to inject an additional oxidizing gas for burning a small portion of preheated scrap, post-combustion of CO and iron-carbon melt refining. The burner/injector may be arranged as a simple liquid-cooled combustor permanently mounted through the furnace wall or roof, and may be equipped with single or multiple channels for injection of solid material and high velocity oxidizing gas. Separate injecting lances for high velocity oxidizing gas and/or solid carbonaceous fuel may be mounted on the furnace. Both the lances and the combustors may be equipped with a nozzles for additional injection of the additional oxidizing gas.

    摘要翻译: 一种用于通过使用流体燃料和至少一种富氧氧化气体来提供局部冲击火焰或多个火焰用于废料加热和熔化的燃烧器/喷射器。 燃烧器/喷射器包括用于产生朝向废料桩的冲击火焰的液冷燃烧器,以及用于将可控量的固体碳质燃料和可控流动的高速氧化气体注入空间的结构,该空间先前已被 冲击火焰。 燃烧器/喷射器可以被装备以注入固体成渣材料和/或炉渣脱氧材料,和/或注入另外的氧化气体,用于燃烧一小部分预热废料,后燃烧CO和铁 - 碳熔融精炼 。 燃烧器/喷射器可以被布置为通过炉壁或屋顶永久地安装的简单的液体冷却燃烧器,并且可以配备有用于注入固体材料和高速氧化气体的单个或多个通道。 用于高速氧化气体和/或固体碳质燃料的单独喷射枪可以安装在炉子上。 喷枪和燃烧器都可以配备喷嘴,用于额外注入额外的氧化气体。

    Apparatus for electric steelmaking
    5.
    发明授权
    Apparatus for electric steelmaking 失效
    电炼炼设备

    公开(公告)号:US5843368A

    公开(公告)日:1998-12-01

    申请号:US837896

    申请日:1997-04-22

    摘要: A burner/injector for providing a localized impingement flame or multiple flames for scrap heating and melting through use of a fluid fuel and at least one oxygen rich oxidizing gas. The burner/injector includes a liquid-cooled combustor for generating an impinging flame directed toward a scrap pile and a structure for injecting a controllable amount of a solid carbonaceous fuel and a controllable flow of high velocity oxidizing gas into space that has been previously occupied by the impinging flame. The burner/injector may be equipped to inject a solid slag forming materials and/or slag deoxidizing materials, and/or to inject an additional oxidizing gas for burning a small portion of preheated scrap, post-combustion of CO and iron-carbon melt refining. The burner/injector may be arranged as a simple liquid-cooled combustor permanently mounted through the furnace wall or roof, and may be equipped with single or multiple channels for injection of solid material and high velocity oxidizing gas. Separate injecting lances for high velocity oxidizing gas and/or solid carbonaceous fuel may be mounted on the furnace. Both the lances and the combustors may be equipped with a nozzles for additional injection of the additional oxidizing gas. The burner/injector means can also be arranged as a water-cooled burner/injector lance accompanied with a water-cooled oxygen injecting lance, both movable through the slag door opening toward the furnace interior, wherein the combustor of the burner/injector lance may optionally be arranged (without the use of the combustion chamber) as an external combustion device.

    摘要翻译: 一种用于通过使用流体燃料和至少一种富氧氧化气体来提供局部冲击火焰或多个火焰用于废料加热和熔化的燃烧器/喷射器。 燃烧器/喷射器包括用于产生朝向废料桩的冲击火焰的液冷燃烧器,以及用于将可控量的固体碳质燃料和可控流动的高速氧化气体注入空间的结构,该空间先前已被 冲击火焰。 燃烧器/喷射器可以被装备以注入固体成渣材料和/或炉渣脱氧材料,和/或注入另外的氧化气体,用于燃烧一小部分预热废料,后燃烧CO和铁 - 碳熔融精炼 。 燃烧器/喷射器可以被布置为通过炉壁或屋顶永久地安装的简单的液体冷却燃烧器,并且可以配备有用于注入固体材料和高速氧化气体的单个或多个通道。 用于高速氧化气体和/或固体碳质燃料的单独喷射枪可以安装在炉子上。 喷枪和燃烧器都可以配备喷嘴,用于额外注入额外的氧化气体。 燃烧器/喷射器装置还可以被布置为水冷燃烧器/喷射器喷枪,其伴随着水冷的氧气喷射喷枪,两者均可通过炉渣门向炉内部移动,其中燃烧器/喷射器喷枪的燃烧器可以 可选地布置(不使用燃烧室)作为外部燃烧装置。

    Apparatus for electric steelmaking
    6.
    发明授权
    Apparatus for electric steelmaking 失效
    电炼炼设备

    公开(公告)号:US5858302A

    公开(公告)日:1999-01-12

    申请号:US746206

    申请日:1996-11-06

    摘要: A burner/injector for providing a localized impingement flame or multiple flames for scrap heating and melting through use of a fluid fuel and at least one oxygen rich oxidizing gas. The burner/injector includes a liquid-cooled combustor for generating an impinging flame directed toward a scrap pile and a structure for injecting a controllable amount of a solid carbonaceous fuel and a controllable flow of high velocity oxidizing gas into space that has been previously occupied by the impinging flame. The burner/injector may be equipped to inject a solid slag forming materials and/or slag deoxidizing materials and/or to inject an additional oxidizing gas for burning a small portion of preheated scrap, post-combustion of CO and iron-carbon melt refining. The burner/injector may be arranged as a simple liquid-cooled combustor permanently mounted through the furnace wall or roof, and may be equipped with single or multiple channels for injection of solid material and high velocity oxidizing gas. Separate injecting lances for high velocity oxidizing gas and/or solid carbonaceous fuel may be mounted on the furnace. Both the lances and the combustors may be equipped with a nozzles for additional injection of the additional oxidizing gas.

    摘要翻译: 一种用于通过使用流体燃料和至少一种富氧氧化气体来提供局部冲击火焰或多个火焰用于废料加热和熔化的燃烧器/喷射器。 燃烧器/喷射器包括用于产生朝向废料桩的冲击火焰的液冷燃烧器,以及用于将可控量的固体碳质燃料和可控流动的高速氧化气体注入空间的结构,该空间先前已被 冲击火焰。 燃烧器/喷射器可以被装备以注入固体成渣材料和/或炉渣脱氧材料和/或注入额外的氧化气体,以燃烧少量的预热废料,后燃烧CO和铁 - 碳熔融精炼。 燃烧器/喷射器可以被布置为通过炉壁或屋顶永久地安装的简单的液体冷却燃烧器,并且可以配备有用于注入固体材料和高速氧化气体的单个或多个通道。 用于高速氧化气体和/或固体碳质燃料的单独喷射枪可以安装在炉子上。 喷枪和燃烧器都可以配备喷嘴,用于额外注入额外的氧化气体。

    Method and apparatus for flame gunning
    7.
    发明授权
    Method and apparatus for flame gunning 失效
    火焰喷枪的方法和装置

    公开(公告)号:US5401003A

    公开(公告)日:1995-03-28

    申请号:US55423

    申请日:1993-04-29

    IPC分类号: F27D1/16

    CPC分类号: F27D1/1652 F27D1/1678

    摘要: A method of applying a hot composite on top of the refractory lining of steel making and processing vessels is disclosed. The composite may be applied to the refractory wall in more than one layer, including a dense intermediate layer for adhesion, and a less dense layer on top that is designed to be consumed as a slag-forming component during steel making and refining. The composite is applied by discharging a carrier gas containing a mixture of small particles, including particles of silica, particles of at least one high-temperature oxide based material and particles of solid carbonaceous fuel, through a carrier gas discharge nozzle. Additional substances may be added to the mixture to enhance the slag-forming process. A controllable flow of oxidizing gas is charged at high and preferably supersonic speed through an essentially crescent-shaped nozzle partially surrounding the carrier gas discharge nozzle. The carbonaceous fuel is ignited and rapidly burned, causing silica based material to become fluid and to coat the high-temperature oxide particles, thereby enhancing the adhering properties of said hot particles and facilitating the reaction of high-temperature oxide with the silica. The resulting hot gaseous mixture and hot particles are impacted on the refractory wall, where at least some of the hot particles adhere. By controlling the flow of oxidizable gas, the supply of fuel, or both, the amount of solid carbon in the composite applied to the refractory wall, and hence, the porosity of the deposit, is controlled.

    摘要翻译: 公开了一种将热复合材料应用于炼钢和加工容器的耐火衬里顶部的方法。 复合材料可以在多于一个层中施加到耐火壁上,包括用于粘合的致密中间层,以及设计成在炼钢和精炼期间作为炉渣形成部件消耗的较不致密的层。 通过载气排出喷嘴将包含二氧化硅颗粒,至少一种高温氧化物基材料颗粒和固体碳质燃料颗粒的小颗粒混合物的载气排出,从而施加复合材料。 可以向混合物中加入另外的物质以增强成渣过程。 氧化气体的可控流动以高且优选超音速的速度通过部分地围绕载气排出喷嘴的基本上月牙形的喷嘴进行充电。 碳质燃料被点燃并迅速燃烧,导致二氧化硅基材料变成流体并涂覆高温氧化物颗粒,从而提高所述热颗粒的粘附性能,并促进高温氧化物与二氧化硅的反应。 所得到的热气体混合物和热颗粒被撞击在耐火壁上,其中至少一些热颗粒粘附。 通过控制可氧化气体的流动,控制燃料或二者的供应,施加到耐火壁上的复合材料中的固体碳量以及沉积物的孔隙率。

    Method for producing steel
    8.
    发明授权
    Method for producing steel 失效
    生产钢的方法

    公开(公告)号:US5286277A

    公开(公告)日:1994-02-15

    申请号:US889018

    申请日:1992-05-26

    摘要: A steelmaking process is disclosed utilizes solid ferrous metallic material as a substantial part of the metallic charge and uses heat released by combustion of two different types of carbonaceous materials and steel scrap that have been strategically charged inside of at least a partially refractory lined steelmaking vessel. One of the carbonaceous materials contains a high content of volatile hydrocarbons and is primarily responsible for early preheating and partial melting of the solid ferrous material. The second carbonaceous material contains a low content of volatile hydrocarbons and is primarily responsible for providing a reducing capability to the slag, for carburizing the melt and for providing additional heat generated by combustion which is used to enhance heating and melting of solid ferrous materials. This method of steelmaking also consists of the controllable introduction of oxygen rich oxidizing gas which initially is used for combustion of said hydrocarbons in the carbonaceous materials to melt solid ferrous metallic material and further is used for refining the resultant molten pool of ferrous material before tapping. Slag forming material is used at the bottom of the furnace to provide for continuous refining of molten ferrous material throughout entire steelmaking process. Molten blast furnace ("hot") iron also can be charged in an embodiment of this method of steel production. Electrical energy may be used as an additional heat source to increase the metallic yield.

    摘要翻译: 公开了一种炼钢工艺,其使用固体黑色金属材料作为金属装料的主要部分,并且使用两种不同类型的含碳材料和废钢(4)的燃烧释放的热量,该废钢已经在至少部分地 耐火钢衬炼钢船(1)。 其中一种碳质材料含有高含量的挥发性烃类,主要负责固体亚铁材料的早期预热和部分熔融。 第二碳质材料含有低含量的挥发性烃,主要负责提供炉渣的还原能力,用于渗碳熔体,并提供用于增强固体黑色金属材料的加热和熔化的燃烧产生的额外热量。