Desulfurizing iron
    2.
    发明授权
    Desulfurizing iron 失效
    脱硫铁

    公开(公告)号:US4915732A

    公开(公告)日:1990-04-10

    申请号:US349481

    申请日:1989-05-09

    CPC classification number: C21C1/025

    Abstract: The efficiency of the use of desulfurizing agents, particularly calcium carbide- and calcium oxide-based desulfurizing agents, to decrease the sulfur content of molten iron is improved by adding a pulse of magnesium, aluminum or calcium metal at a critical concentration of sulfur and oxygen in the molten metal. The improved efficiency enables less desulfurization agent to be employed for the same residual sulfur concentration, with consequently decreased reaction time and costs.

    Abstract translation: 通过在硫和氧的临界浓度下加入脉冲的镁,铝或钙金属,可以提高使用脱硫剂,特别是碳化钙和氧化钙基脱硫剂降低铁水含硫量的效率 在熔融金属中。 提高的效率使得较少的脱硫剂可用于相同的残留硫浓度,从而降低反应时间和成本。

    Powdered desulfurizing reagent and process of use
    4.
    发明授权
    Powdered desulfurizing reagent and process of use 失效
    粉状脱硫剂及使用方法

    公开(公告)号:US5284504A

    公开(公告)日:1994-02-08

    申请号:US966223

    申请日:1992-10-26

    CPC classification number: C21C1/025

    Abstract: A reagent for desulfurizing molten iron comprising calcium carbide and/or lime and an asphaltite. The reagent may contain, in addition, magnesium which is either uniformly distributed within the reagent mixture, or stored separately and added to the mixture during fluidized transport of the reagent just prior to injection to vary the addition of magnesium for any given injection.

    Abstract translation: 一种用于将包含碳化钙和/或石灰和沥青质的铁水脱硫的试剂。 另外,试剂可以另外含有均匀分布在试剂混合物中的镁,或者单独存储的镁,并且在注入之前流动转移试剂期间加入到混合物中,以改变任何给定注射剂中镁的添加量。

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