Method and apparatus for recovering metal values from liquid slag and baghouse dust of an electric arc furnace
    1.
    发明申请
    Method and apparatus for recovering metal values from liquid slag and baghouse dust of an electric arc furnace 失效
    从电炉的液渣和袋式除尘器回收金属值的方法和装置

    公开(公告)号:US20010046251A1

    公开(公告)日:2001-11-29

    申请号:US09785819

    申请日:2001-02-16

    发明人: John A. Vallomy

    IPC分类号: F27D017/00 F27B014/02

    摘要: An apparatus and method for processing liquid slag and baghouse dust from a steelmaking furnace such as an EAF to recover valuable metals from the slag and dust includes a treatment vessel having a movable lower shell portion for receiving liquid slag and an upper shell portion that couples with the movable lower shell portion during heat activation of the treatment vessel. The slag is combined with silicon dioxide, a reducing agent, baghouse dust, and an inert gas before being heated to between approximately 1400null C. and 3000null C. The heat treatment results in a molten reduced iron and manganese metallic material, a treated slag layer, and an off-gas containing lead, zinc, and carbon monoxide. The off-gas is combusted, cooled, and solidified, resulting in lead oxide and zinc oxide. The slag layer is tapped, cooled, and solidified. The metallic layer is tapped for recycle in the steel making process.

    摘要翻译: 用于处理来自炼铁炉(EAF)的炼钢炉中的液渣和袋尘的装置和方法,用于从炉渣和灰尘中回收有价值的金属,包括一个处理容器,该处理容器具有用于接收液态炉渣的可动下壳体部分, 在处理容器的热激活期间可移动的下壳体部分。 在加热至约1400℃至3000℃之前,该炉渣与二氧化硅,还原剂,袋式除尘器和惰性气体组合。热处理产生熔融还原的铁和锰金属材料,经处理 渣层和含铅,锌和一氧化碳的废气。 废气燃烧,冷却和固化,产生氧化铅和氧化锌。 炉渣层被攻丝,冷却和固化。 在制钢过程中将金属层轻敲回收再循环。

    Electric arc furnace with scrap diverting panel and associated methods
    2.
    发明授权
    Electric arc furnace with scrap diverting panel and associated methods 失效
    电弧炉与废料转向面板及相关方法

    公开(公告)号:US5936995A

    公开(公告)日:1999-08-10

    申请号:US969853

    申请日:1997-11-14

    摘要: An electric arc furnace includes a melting vessel having a top opening and an inside wall surface. A removable roof is positioned over the top opening and can be removed for permitting the charging of scrap into the melting vessel. An electrode extends through the roof into the melting vessel. A slag door portion defines a slag discharge opening discharged from the melting furnace. An arcuate configured water-cooled panel includes opposing upper and lower ends and opposing side ends. This water-cooled panel is mounted in the melting vessel above the slag door portion so that the lower end is angled inwardly away from an adjacent inside surface of the melting vessel. The side ends curve toward the adjacent inside surface of the melting vessel to minimize any arcing between the opposing side ends and the electrodes, and to avoid damage from scrap charging. The water-cooled panel forms a scrap free area adjacent to slag door portion.

    摘要翻译: 电弧炉包括具有顶部开口和内壁表面的熔化容器。 可拆卸的屋顶位于顶部开口上方并且可以被移除,以允许将废料装入熔化容器。 电极延伸穿过屋顶进入熔化容器。 渣门部分限定从熔炉排出的排渣口。 弧形配置的水冷面板包括相对的上端和下端以及相对的侧端。 该水冷面板安装在炉渣门部分上方的熔化容器中,使得下端与熔化容器的相邻内表面向内倾斜。 侧端部朝向熔融容器的相邻内表面弯曲,以使相对侧端和电极之间的任何电弧放电最小化,并避免废料充电损坏。 水冷面板形成与炉渣门部分相邻的无废料区域。

    Method and an apparatus for subdivision of and heat recovery from a
liquid slag
    3.
    发明授权
    Method and an apparatus for subdivision of and heat recovery from a liquid slag 失效
    从液体渣中分离和热回收的方法和装置

    公开(公告)号:US4604136A

    公开(公告)日:1986-08-05

    申请号:US615879

    申请日:1984-05-30

    摘要: The method in accordance with the invention comprises a rolling of the liquid slag between at least two cooling rolls of metal, preferably steel, the temperature of and the distance between the rolls being controlled such that a cohesive slag slab is obtained having a solidified surface layer and a melted central layer, the slab still being sufficiently plastic to be shapable, a shaping in conjunction with the rolling or after the same, of the slab into briquettes and a recovery of heat at least from the shaped briquettes, preferably after these have been separated from each other, via any suitable cooling means or medium.The apparatus in accordance with the invention comprises at least two cooling rolls (1) arranged to roll out the liquid slag into a cohesive, shapable slab, means (4) for briquetting the slab and means (5,7) for recovering heat from the shaped briquettes.

    摘要翻译: 根据本发明的方法包括在至少两个金属冷却辊(优选钢)之间滚动液体渣,控制辊的温度和距离,使得获得具有固化表面层的粘结渣渣板 和熔融的中心层,板仍然具有足够的塑性以成形,与轧制或之后相同的板坯成型成团块,并且至少从成型的团块回收热量,优选在这些已经被 通过任何合适的冷却装置或介质彼此分离。 根据本发明的装置包括至少两个冷却辊(1),其布置成将液体炉渣推出到粘性可成形板坯中,用于压块板坯的装置(4)和用于从炉内回收热量的装置(5,7) 形状的团块。

    NONCONTACT TEMPERATURE SENSING METHOD AND APPARATUS FOR LADLE PREHEATING
    4.
    发明授权
    NONCONTACT TEMPERATURE SENSING METHOD AND APPARATUS FOR LADLE PREHEATING 失效
    非接触式温度传感方法及装置预处理

    公开(公告)号:US4419022A

    公开(公告)日:1983-12-06

    申请号:US37036682

    申请日:1982-04-21

    申请人: BLOOM ENG CO INC

    发明人: ELY ROBERT T

    摘要: A ladle preheat station including a wall (16), a ladle base (14) for holding a ladle (12) juxtapositioned to the wall (16) on one side thereof, and burner means (20) extending through the wall (16) for firing into the ladle interior (22). The wall includes a sight tube (30) extending therethrough. An infra-red pyrometer (28) is mounted and spaced from the side of the wall (16) opposite the ladle (12), and is positioned to receive radiation through the sight tube (30) from the ladle bottom (24) and is arranged to produce an electrical signal representative of the temperature of the ladle bottom (24) for control purposes. The sight tube (30) includes a Pyrex (Registered Trade Mark) lens (42) for protecting the pyrometer (28) from excessive heating by radiation from the ladle interior (22), and a purge system (34, 40, 44) is provided for passing air through the sight tube (30) to prevent contamination of the lens (42) by combustion products.

    摘要翻译: 一种钢包预热站,包括一个壁(16),一个钢包底座(14),用于保持在其一侧上与壁(16)并置的浇包(12),以及延伸穿过墙壁(16)的燃烧器装置(20) 射入钢包内部(22)。 该墙壁包括延伸穿过其中的瞄准镜(30)。 红外高温计(28)安装并且与钢包(12)相对的壁(16)的侧面间隔开,并且被定位成从钢包底部(24)接收通过观察管(30)的辐射,并且是 被布置成产生代表浇包底部(24)的温度的电信号用于控制目的。 观察管(30)包括用于保护高温计(28)免受来自钢包内部(22)的辐射的过度加热的派雷克斯(注册商标)透镜(42),吹扫系统(34,40,44)是 用于使空气通过观察管(30),以防止由燃烧产物污染透镜(42)。

    Direct smelting plant
    6.
    发明授权
    Direct smelting plant 失效
    直接冶炼厂

    公开(公告)号:US06399016B2

    公开(公告)日:2002-06-04

    申请号:US09800437

    申请日:2001-03-05

    IPC分类号: C21C100

    摘要: Direct smelting plant for producing molten metal from a metalliferous feed material induces a smelting vessel 11 to hold a molten metal and slag bath beneath a hot gas space. Solids injection lances 27 extend downwardly and inwardly through side walls of the vessel and hot oxidising gas is directed downwardly into the gas space by a central vertical gas injection lance 26. The plant layout is divided into four functional zones spaced circumferentially around vessel 11 and radiating outwardly from the vessel. Zone 1 contains an overhead hot gas delivery duct 31 supplying gas to lance 26 and an offgas duct 32; Zone 2 contains a forehearth 19 and forehearth tapping launder 34; Zone 3 contains slag notches 45 and slag launders 46; and Zone 4 contains a primary slag drain taphole and launder 48. This layout minimises the potential for interference between the transport of the hot gases, the metaliferous feed material, and the molten metal and slag.

    摘要翻译: 用于从含金属进料生产熔融金属的直接冶炼厂诱导熔融容器11将熔融金属和渣槽保持在热气体空间下方。 固体注射枪27通过容器的侧壁向下并向内延伸,并且热氧化气体通过中心垂直气体喷射喷枪26向下引导到气体空间中。工厂布局被分成在容器11周围周向隔开的功能区域和辐射 从船上向外。 区域1包括向喷枪26和废气管道32供应气体的塔顶热气体输送管道31; 区域2包含前炉19和前炉排水槽34; 区域3包含炉渣槽45和炉渣洗涤器46; 而第4区包含一个主要的排渣口和流槽48.这种布局最大限度地减少了热气体,金属进料和熔融金属和渣之间的干扰。

    Dross cooling apparatus
    8.
    发明授权
    Dross cooling apparatus 失效
    浮渣冷却装置

    公开(公告)号:US4842255A

    公开(公告)日:1989-06-27

    申请号:US925741

    申请日:1986-10-30

    摘要: A system for cooling non-ferrous metal dross comprises an open-top metal pan to receive the dross which pan is divided by internal partitions into open-top compartments and has sufficient heat capacity to act as a heat sink to absorb heat from the dross, and a hood shaped to fit over the pan when filled with dross to form a substantially closed cavity round the pan. An inert gas such as argon is introduced into this cavity to displace oxygen and reduce the extent of oxidation of residual metal in the dross.

    摘要翻译: 用于冷却有色金属渣滓的系统包括开放式金属锅,以接收浮渣,其中锅被内部隔板分隔成敞开的顶部隔室,并且具有足够的热容量以充当散热器以吸收来自浮渣的热量, 以及当填充浮渣以在锅上形成基本封闭的空腔时,罩形成适合于锅上的罩。 将惰性气体如氩气引入该空腔中以置换氧气并减少浮渣中残余金属的氧化程度。

    Disposable liner
    9.
    发明授权
    Disposable liner 失效
    可拆卸内衬

    公开(公告)号:US3620522A

    公开(公告)日:1971-11-16

    申请号:US3620522D

    申请日:1970-04-10

    发明人: BRIDGES JOHN B

    IPC分类号: F27B3/12 F27D99/00 C21C5/02

    摘要: A disposable liner for accumulating deposits of alloy splashing up from the molten alloy in an induction heating furnace comprises a sleeve which fits closely within the upper portion of the furnace crucible and is supported therein by asbestos-covered chains which loop over studs about the upper end of the crucible.