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    Refining Molten Metal
    2.
    发明申请
    Refining Molten Metal 审中-公开
    精炼熔融金属

    公开(公告)号：US20090229416A1

    公开(公告)日：2009-09-17

    申请号：US11596500

    申请日：2005-05-12

    申请人： Andrew M. Cameron ,  Michael James Strelbisky ,  Andrew Peter Richardson ,  John Batham ,  Mark Alan Wilkinson

    发明人： Andrew M. Cameron ,  Michael James Strelbisky ,  Andrew Peter Richardson ,  John Batham ,  Mark Alan Wilkinson

    IPC分类号： C22B9/05 ,  C22B5/00 ,  C21B7/16

    CPC分类号： C21C5/32 ,  C21C5/4606

    摘要： A method of refining molten metal in a vessel by the reaction of oxygen with impurities in the molten metal comprises the steps of: a) ejecting at least one primary jet of oxygen from a lance positioned above the molten metal into the molten metal to react with impurities therein and to form a layer of molten slag; b) continuing to eject the primary jet of oxygen from the lance and thereby causing the primary bet of oxygen to pass through the slag layer into the molten metal; c) ejecting a plurality of secondary jets of oxygen from the lance, the secondary jet of oxygen travelling for a distance separately from the primary jet of oxygen; and d) entraining the secondary jets of oxygen into the primary jet of oxygen upstream of the entry of the primary jet of oxygen into the molten metal. A lance head for use in the method has at least one primary oxygen port and a plurality of secondary oxygen ports, the axis of the second oxygen port diverging in the direction of flow from the primary oxygen port at an angle of up to 45°. The method and lance head are particularly of use in the Basic Oxygen Steelmaking (BOS) process. If desired, a stirring gas such as argon may be mixed with the primary oxygen.

    摘要翻译： 通过氧气与熔融金属中的杂质的反应来在容器中精炼熔融金属的方法包括以下步骤：a）从位于熔融金属上方的喷枪将至少一个主要的一次射流喷射到熔融金属中以与 并且形成一层熔渣; b）继续从喷枪喷出主喷射的氧气，从而使氧的初始注入通过熔渣层进入熔融金属; c）从所述喷枪喷射多个次要喷射的氧气，所述次要喷射的氧气与所述主喷射流分开运动一段距离; 以及d）将二次喷射的氧气引入氧气初级射流进入熔融金属的上游的主要喷射流中。 用于该方法的喷枪头具有至少一个主氧气端口和多个次级氧气端口，第二氧气端口的轴线以最多45°的角度从主氧气端口沿着流动方向发散。 方法和喷枪头特别适用于基本氧气炼钢（BOS）工艺。 如果需要，可以将诸如氩的搅拌气体与初级氧混合。

    Apparatus for injecting gas into a vessel
    3.
    发明授权
    Apparatus for injecting gas into a vessel 有权
    用于将气体注入容器的装置

    公开(公告)号：US07588718B2

    公开(公告)日：2009-09-15

    申请号：US11249503

    申请日：2005-10-14

    申请人： Trevor Williams ,  Barry Alan Cady

    发明人： Trevor Williams ,  Barry Alan Cady

    IPC分类号： C21C7/00

    CPC分类号： F27D3/16 ,  C21B13/0013 ,  C21C5/32 ,  C21C5/4606 ,  C21C5/4613 ,  C21C5/462 ,  C21C5/567 ,  C21C2005/4626 ,  C22B9/05 ,  F27B3/10 ,  F27B3/22 ,  F27D7/02 ,  F27D2003/164 ,  F27D2003/169 ,  Y02P10/136

    摘要： An apparatus for injecting gas into a vessel includes a gas flow duct which receives hot gas through a gas inlet structure at a rear end of the duct. The forward end of the duct has an annular duct with an internal cooling water passage. Cooling water supply and return passages are formed within the wall of the duct such that water flows to and from a tip through the supply and return passages. The tip includes a hollow shell and a partitioning structure that has a ring and a plurality of circumferential flanges that project outwardly from the ring to the shell to form a series of water flow galleries, each extending circumferentially around the tip and interconnected for flow of cooling water sequentially through the galleries from the water supply passages to the water return passage. The circumferential flanges also serve as buttress supports for the shell.

    摘要翻译： 用于将气体注入容器的装置包括气流管道，其通过管道后端处的气体入口结构接收热气体。 管道的前端具有带有内部冷却水通道的环形管道。 冷却水供应和返回通道形成在管道的壁内，使得水从尖端流过供应和返回通道。 尖端包括中空壳体和分隔结构，该分隔结构具有环和多个圆周凸缘，其从环向外突出到壳体以形成一系列水流画廊，每个水流画廊围绕尖端周向延伸并且互连用于冷却流动 水依次通过从供水通道到水回流通道的画廊。 周向凸缘还用作外壳的支撑支撑。

    Apparatus for injecting gas into a vessel
    4.
    发明授权
    Apparatus for injecting gas into a vessel 有权
    用于将气体注入容器的装置

    公开(公告)号：US07481965B2

    公开(公告)日：2009-01-27

    申请号：US11249504

    申请日：2005-10-14

    申请人： Trevor Williams ,  John Adrian Calvi

    发明人： Trevor Williams ,  John Adrian Calvi

    IPC分类号： C21C7/00

    CPC分类号： C21B13/0013 ,  C21C5/32 ,  C21C5/4606 ,  C21C5/4613 ,  C21C5/462 ,  C21C5/567 ,  C21C2005/4626 ,  C22B9/05 ,  F27B3/10 ,  F27B3/22 ,  F27D3/16 ,  Y02P10/136

    摘要： Apparatus for injecting gas into a vessel including a gas flow duct 31 which receives hot gas through a gas inlet structure 32 at a rear end of the duct. An elongate central structure 33 extends throughout the length of duct 31 and carries a series of vanes 34 for imparting swirl to the gas flow exiting the forward end of the duct. The forward end of the duct 31 has an internally water cooled tip 36 and water flows to and from tip 36 through annular passages 43, 44 in the wall of duct 31. Vanes 34 are mounted on central structure 33 so as to extend to forward ends disposed within the duct tip 36 and are dimensioned such that during operation of the apparatus their forward ends are engaged and supported by the internally water cooled duct tip 36.

    摘要翻译： 用于将气体注入到容器中的装置，包括气流管道31，其通过管道后端处的气体入口结构32接收热气体。 细长的中心结构33延伸穿过管道31的整个长度，并且承载一系列的叶片34，用于向离开管道前端的气流提供涡流。 管道31的前端具有内部水冷却的尖端36，并且水从尖端36流过管道31的壁中的环形通道43,44。通道34安装在中心结构33上，以便延伸到前端 设置在管道尖端36内并且其尺寸使得在设备的操作期间，它们的前端接合并由内部水冷管道尖端36支撑。

    Metallurgical lance with annular gas flow control
    5.
    发明申请
    Metallurgical lance with annular gas flow control 审中-公开
    具有环形气流控制的冶金喷枪

    公开(公告)号：US20070057417A1

    公开(公告)日：2007-03-15

    申请号：US11222567

    申请日：2005-09-09

    申请人： Michael Strelbisky ,  Andrew Richardson ,  Mark Wilkinson ,  Andrew Cameron ,  John Batham

    发明人： Michael Strelbisky ,  Andrew Richardson ,  Mark Wilkinson ,  Andrew Cameron ,  John Batham

    IPC分类号： C21C5/32

    CPC分类号： C21C5/4606 ,  C21C5/32

    摘要： A method of controlling total jet pressure from the head of a metallurgical lance for introducing gas into a volume of metal in a vessel. The lance head has at least one ejector, which has a nozzle located in a bore of the lance head and has an annular gas passage between at least one nozzle and the wall of the bore. The method proceeds by adjusting the annular gas velocity from a first Mach number to a second mach number to effect change of the total jet pressure.

    摘要翻译： 控制来自冶金喷枪头部的总喷射压力的方法，用于将气体引入容器中的一定体积的金属。 喷枪头具有至少一个喷射器，其具有位于喷枪头的孔中的喷嘴，并且在至少一个喷嘴和孔的壁之间具有环形气体通道。 该方法通过调节从第一马赫数到第二马赫数的环形气体速度来实现总喷射压力的改变。

    Controlled foamy slag process
    6.
    发明授权
    Controlled foamy slag process 失效
    控制泡沫渣工艺

    公开(公告)号：US5584909A

    公开(公告)日：1996-12-17

    申请号：US375343

    申请日：1995-01-19

    申请人： Chung S. Kim

    发明人： Chung S. Kim

    IPC分类号： C21C5/30 ,  C21C5/32 ,  C21C5/36

    CPC分类号： C21C5/32 ,  C21C2005/366

    摘要： A method of improving the post-combustion heat recovery in a basic oxygen furnace by controllably forming a foamy slag. The foamy slag is generated by increasing the lance height and reducing the rate of lance height reduction during the oxygen blowing cycle. The foamy slag is controlled to prevent slopping by calculating the approximate starting point of the peak decarburization period for the charge and then adjusting the oxygen flow rate to be at a minimum at the commencement of the peak decarburization period.

    摘要翻译： 一种通过可控地形成泡沫状炉渣来改善碱性氧气炉中的后燃热回收的方法。 通过增加喷枪高度并降低吹氧循环期间喷枪高度降低的速率来产生泡沫状炉渣。 通过计算充电峰值脱碳期的近似起点，然后在峰值脱碳期开始时将氧气流量调节至最低，控制泡沫炉渣以防止流失。

    Method for stably refining high carbon steel
    9.
    发明授权
    Method for stably refining high carbon steel 失效
    稳定精炼高碳钢的方法

    公开(公告)号：US4398949A

    公开(公告)日：1983-08-16

    申请号：US315888

    申请日：1981-10-28

    申请人： Minoru Kitamura ,  Shinji Koyama ,  Shuzo Ito ,  Masahiko Ohgami ,  Hideaki Fujimoto

    发明人： Minoru Kitamura ,  Shinji Koyama ,  Shuzo Ito ,  Masahiko Ohgami ,  Hideaki Fujimoto

    IPC分类号： C21C5/32 ,  C21C5/35 ,  C21C5/34

    CPC分类号： C21C5/35 ,  C21C5/32

    摘要： A method for stably refining high carbon steel by top and bottom blown converter refining in which the entire quantity or part of refining pure oxygen is blown onto molten iron through a top blowing lance nozzle while blowing an inert gas into the converter through a nozzle at the bottom thereof, and wherein the bottom blown inert gas is fed at a rate less than 0.09 Nm.sup.3 /min.multidot.ton during the blowing and/or at a rate less than 0.03 Nm.sup.3 /min.multidot.ton in a controlling stage immediately after turndown.

    摘要翻译： 一种通过顶吹式和底吹式转炉精炼对高碳钢进行稳定精炼的方法，其中通过顶吹喷枪喷嘴将精炼纯氧的全部或部分吹入铁水，同时通过喷嘴将喷嘴中的惰性气体吹入转炉 底部，并且其中在吹送期间以及/或以小于0.03Nm 3 / min x的速率在低于调节后的控制阶段以低于0.09Nm 3 / min x的速率进料底吹惰性气体。

    Process for refining of a bath of metal containing cold solid substances
    10.
    发明授权
    Process for refining of a bath of metal containing cold solid substances 失效
    用于精炼含有冷固体物质的金属浴的方法

    公开(公告)号：US4349382A

    公开(公告)日：1982-09-14

    申请号：US144228

    申请日：1980-04-28

    申请人： Francois Schleimer ,  Romain Henrion ,  Ferdinand Goedert ,  Lucien Lorang

    发明人： Francois Schleimer ,  Romain Henrion ,  Ferdinand Goedert ,  Lucien Lorang

    IPC分类号： C21C5/28 ,  C21C5/30 ,  C21C5/32 ,  C21C5/35 ,  C21C5/34

    CPC分类号： C21C5/32 ,  Y02P10/212

    摘要： A process for refining a metal bath in a converter by oxygen blowing, particularly a molten metal liquid bath containing cold, solid substances, notably of scrap. Oxygen is distributed over the surface of the bath, so that there will be an after-combustion of CO released in the course of decarbonization. The thickness and consistency of a slag layer formed over the bath is actively regulated by injecting a rising inert gas through the bottom of the bath. The flow of rising gas may be regulated depending upon the oxygen content in the fumes of the converter, or upon the intensity of emission through the top of an oxygen blowing lance.

    摘要翻译： 一种通过吹氧来精炼转炉中的金属浴的方法，特别是含有冷的固体物质，特别是废料的熔融金属液体浴。 氧分布在浴的表面上，从而在脱碳过程中会释放CO的后燃。 通过在浴槽底部喷射上升的惰性气体来积极地调节在浴上形成的炉渣层的厚度和稠度。 上升气体的流动可以根据转炉的烟气中的氧含量或通过氧气喷枪顶部的排放强度来调节。