Production of carburized iron
    1.
    发明授权
    Production of carburized iron 失效
    生产渗碳铁

    公开(公告)号:US3953197A

    公开(公告)日:1976-04-27

    申请号:US472892

    申请日:1974-05-23

    IPC分类号: C21C5/56 C21C7/00

    摘要: Particulate material such as iron scrap is melted down into a melt which is received in a melt retaining zone. During the reception of the melt in this zone, liquid iron of the melt is contacted with an elongated upright body of carbon soluble in the liquid iron, or with a lining of such carbon adherent to the bottom of the melt retaining zone, below any slag which floats on the liquid iron of the melt. The liquidus point of the melt is lowered by the resulting carburization of the iron, thereby facilitating the retention of the liquid iron in the melt retaining zone.

    摘要翻译: 诸如废铁的颗粒材料熔化成熔体,熔体保持在熔体中。 在该区域中的熔体接收期间,熔体的液态铁与可溶于液态铁的细长的直立体接触,或者与粘附到熔体保持区底部的碳的衬里接触,低于任何渣 其浮在熔体的液态铁上。 熔体的液相点由于铁的渗碳而降低,从而有利于将液态铁保持在熔体保持区中。

    Process for steel production
    2.
    发明授权
    Process for steel production 失效
    钢铁生产工艺

    公开(公告)号:US4012226A

    公开(公告)日:1977-03-15

    申请号:US472891

    申请日:1974-05-23

    IPC分类号: C21B13/02 C21B13/14

    CPC分类号: C21B13/023 Y02P10/136

    摘要: A charge of ore, pellets, sinter and the like is admitted into the top of a shaft furnace. In the upper region of the furnace, there are provided inlets through which a reducing gas is introduced into the furnace. Direct reduction of the charge takes place in the upper region of the furnace and yields iron sponge. The iron sponge forms a column in the furnace which extends from the upper region of the furnace into the lower region of the latter. A burner extends into the lower region of the furnace and continuously directs a flame against the lower end of the sponge column. As the iron sponge in the lower portion of the column melts, fresh iron sponge descends through the furnace and becomes exposed to the flame so that the iron sponge is continuously melted. The molten material is continuously withdrawn from the furnace. The charge may include alloying elements so as to permit alloying of the molten material to produce a steel having a desired composition.

    摘要翻译: 矿石,颗粒,烧结矿等进入立式炉的顶部。 在炉的上部区域设置有将还原气体引入炉内的入口。 电荷的直接还原在炉的上部区域发生并产生铁海绵。 铁海绵在熔炉中形成一列,从炉的上部区域延伸到炉的下部区域。 燃烧器延伸到炉的下部区域,并且持续地将火焰引导到海绵柱的下端。 当柱的下部的铁海绵熔化时,新鲜的铁海绵通过炉子下降并暴露于火焰中,使铁海绵不断地熔化。 熔融材料从炉中连续取出。 电荷可以包括合金元素,以便允许熔融材料的合金化以产生具有所需组成的钢。

    Process for the production of steel
    3.
    发明授权
    Process for the production of steel 失效
    钢的生产工艺

    公开(公告)号:US4120696A

    公开(公告)日:1978-10-17

    申请号:US756849

    申请日:1977-01-05

    IPC分类号: C21C5/56 C21C5/52

    CPC分类号: C21C5/567 Y02P10/212

    摘要: A charge including scrap, sponge iron and ferrous metals is admitted into the top of a vertically arranged melting column and descends through the latter by gravity. The charge is melted by directing a flame against the leading end thereof and the melt flows through an outlet at the bottom of the melting column in to a chamber located beneath and communicating with the melting column. In this chamber, reduction of the slag is effected and the slag is removed from the molten metal. Alloying additions and deoxidizing agents are introduced into the chamber so that the molten metal is deoxidized and becomes alloyed to produce steel having a desired analysis. The thus-produced steel is superheated in the chamber and is then continuously cast.

    摘要翻译: 包括废料,海绵铁和黑色金属的费用进入垂直排列的熔化塔的顶部,并通过重力下降。 通过将火焰引导到其前端而使熔融物熔化,并且熔体流过熔融塔底部的出口,进入位于熔融塔下方并与熔化塔连通的室中。 在该室中,进行炉渣的还原并且从熔融金属中除去炉渣。 将合金添加剂和脱氧剂引入室中,使得熔融金属脱氧并变得合金化以产生具有所需分析的钢。 这样生产的钢在室内过热,然后连续铸造。