APPARATUS AND METHOD FOR HEATING A BLAST FURNACE STOVE
    1.
    发明申请
    APPARATUS AND METHOD FOR HEATING A BLAST FURNACE STOVE 有权
    用于加热烤炉的装置和方法

    公开(公告)号:US20120214116A1

    公开(公告)日:2012-08-23

    申请号:US13096161

    申请日:2011-04-28

    Abstract: A method for heating a blast furnace stove includes combusting fuel in a combustion chamber in the stove, providing combustion gases from the combustion chamber to heat refractory material in the stove, recirculating exhausted combustion gases into the combustion chamber, enriching the combustion chamber with oxygen sufficient for maintaining combustion in the combustion chamber without damaging the refractory material in the stove.

    Abstract translation: 一种用于加热高炉炉的方法包括在炉中的燃烧室中燃烧燃料,提供来自燃烧室的燃烧气体以加热炉中的耐火材料,将排出的燃烧气体再循环到燃烧室中,使氧气充满氧气 用于在燃烧室中维持燃烧而不损坏炉中的耐火材料。

    Process for producing magnesium
    2.
    发明授权
    Process for producing magnesium 失效
    生产镁的方法

    公开(公告)号:US4572736A

    公开(公告)日:1986-02-25

    申请号:US675600

    申请日:1984-11-28

    CPC classification number: C22B4/02 C22B26/22 C22B4/005 C22B5/10

    Abstract: Magnesium is produced by carbothermic conversion of magnesia in a process which comprises effecting the reaction in the presence of a liquid slag comprising oxides or mixed oxides and carbides of magnesium, calcium and aluminium in relative weight proportions, calculated as atomic metal:metal ratios, which by continued introduction of appropriate feedstock into the reactor are being kept within the following ranges(i) Mg:Ca from 0.28:1 to 1.34:1(ii) Al:Mg from 0.79:1 to 3.16:1(iii) Ca:Al from 0.48:1 to 1.50:1under the proviso that the total amount gramatom aluminium is less than 51% of the total amount gramatoms aluminium, calcium and magnesium contained in the slag.

    Abstract translation: 在包括氧化物或混合氧化物和镁,钙和铝的碳化物的液体渣的存在下进行反应的方法中,镁是由氧化镁的碳热转化而产生的,以相对重量比计,原子金属:金属比率 (i)Mg:Ca为0.28:1至1.34:1(ii)Al:Mg为0.79:1至3.16:1(iii)Ca:Al 从0.48:1至1.50:1,条件是总计量的原子铝少于渣中所含的原子数,铝和钙的总量的51%。

    Heating apparatus
    5.
    发明授权
    Heating apparatus 有权
    加热装置

    公开(公告)号:US09151492B2

    公开(公告)日:2015-10-06

    申请号:US13115184

    申请日:2011-05-25

    Abstract: An apparatus for heating a blast furnace stove having a combustion region and a combustion gas outlet associated with the combustion region includes a source of lower calorific value fuel; a first pipeline for supplying the lower calorific value fuel to the combustion region; a source of air; a second pipeline for supplying the air to the combustion region; a source of oxidant comprising at least 85% by volume of oxygen; a third pipeline to supply the oxidant to the combustion region; a fourth pipeline communicating with the combustion gas outlet for conducting combustion gas away from the stove; and a fifth pipeline operable to recirculate combustion gas to the combustion region. The apparatus may operate in different modes according to which of the pipelines are placed in communication with the combustion region.

    Abstract translation: 用于加热具有与燃烧区域相关联的燃烧区域和燃烧气体出口的高炉炉的装置包括低热值燃料源; 用于向燃烧区域供应较低热值燃料的第一管道; 空气来源 用于向燃烧区域供应空气的第二管道; 包含至少85体积%氧气的氧化剂源; 用于将氧化剂供应到燃烧区域的第三管线; 与燃烧气体出口连通的第四管道,用于使燃烧气体远离炉子; 以及可操作以将燃烧气体再循环到燃烧区域的第五管道。 该设备可以根据哪个管道与燃烧区域连通而以不同的模式操作。

    Magnesium production
    6.
    发明授权
    Magnesium production 失效
    镁生产

    公开(公告)号:US5090996A

    公开(公告)日:1992-02-25

    申请号:US460167

    申请日:1990-01-09

    CPC classification number: C22B26/22 C22B4/005 C22B5/04 C22B9/226

    Abstract: Magnesium is produced by the metallothermic reduction of MgO in a molten slag bath comprised of MgO, Al.sub.2 O.sub.3 and CaO together with oxide formed from the reducing metal. The composition of the slag is controlled during at least a first stage of the reduction so that it is wholly within the periclased region of its phase diagram and at least in the surface region, has a substantially constant liquidus temperature. The surface region of the slag is maintained by direct heating (e.g. by a plasma) at or close to the liquidus temperature.

    Abstract translation: PCT No.PCT / GB88 / 00560 Sec。 371 1990年1月9日第 102(e)日期1990年1月9日PCT提交1988年7月11日PCT公布。 出版物WO89 / 00613 日期:1989年1月26日。镁是通过在由MgO,Al 2 O 3和CaO组成的熔融熔渣中与由还原性金属形成的氧化物一起的MgO的金属热还原产生的。 炉渣的组成在还原的至少第一阶段期间被控制,使得其完全在其相图的周期区域内,并且至少在表面区域中具有基本恒定的液相线温度。 炉渣的表面区域通过在或接近液相线温度的直接加热(例如通过等离子体)来维持。

    Refining Molten Metal
    8.
    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

    CPC classification number: C21C5/32 C21C5/4606

    Abstract: 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.

    Abstract translation: 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。

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