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    • 22. 发明授权
    • Method for the pretreatment of a lumpy carbon carrier
    • 块状碳载体预处理方法
    • US4995904A
    • 1991-02-26
    • US266088
    • 1988-11-02
    • Rolf Hauk
    • Rolf Hauk
    • C21B13/00
    • C21B13/002C21B13/0066Y02P10/136
    • A method is disclosed for pretreatment of a lumpy carbon carrier suitable for forming a fluidized bed and a solid bed used in the production of pig iron from iron ore. The ore is pre-reduced in at least one reduction plant and the thus produced iron sponge is subsequently final reduced and fused in a melt-down gasifier with the help of the lumpy carbon carrier and an oxygen-containing gas and is the carbon carrier is fed into the upper part and the oxygen-containing gas is fed into the lower part of the melt-down gasifier. These materials form, together with the iron sponge, a fluidized bed in the melt-down gasifier. Below the fluidized bed, a solid bed is formed consisting of said lumpy carbon carrier. A suitable carbon carrier may be formed by pretreating available coal by one of two methods. Lumpy coal tending to burst upon subjection to a shock-like thermal load is preheated for a minimum of one hour at a temperature of at least 300.degree. C. prior to being fed into the melt-down gasifier in order to diminish its bursting tendency and to reduce the thermal load to which it is subjected. Ground fine coal is blended with a binder and granulated into lumps.
    • 公开了一种用于预处理适于形成流化床的块状碳载体和用于从铁矿石生产生铁的固体床的方法。 矿石在至少一个还原装置中预还原,随后最终还原并且在熔融气化炉中借助于块状碳载体和含氧气体将这样生产的铁海绵熔化并且是碳载体 进料到上部,并且含氧气体被进料到熔化气化器的下部。 这些材料与铁海绵一起形成在熔化气化器中的流化床。 在流化床下方形成由所述块状碳载体组成的固体床。 可以通过两种方法之一预处理可利用的煤来形成合适的碳载体。 倾向于在受到类似冲击的热负荷的冲击下的块状煤在至少300℃的温度下预热至少1小时,然后被送入熔化的气化器以便减少其破裂倾向,并且 以减少其所经受的热负荷。 研磨细煤与粘合剂混合并粒化成块状。
    • 25. 发明授权
    • Process for producing carburized sponge iron
    • 渗碳海绵铁生产工艺
    • US4854967A
    • 1989-08-08
    • US786691
    • 1985-10-11
    • Rolf Hauk
    • Rolf Hauk
    • C21B11/02C21B11/00C21B13/00C21B13/02C21B13/14
    • C21B13/02C21B11/00C21B13/002C21B13/14
    • A process for producing sponge iron from iron ore is described, which is reduced to sponge iron in a reduction shaft furnace by means of a hot reduction gas. For this purpose reduction gas at a temperature in the range 750 to 900.degree. C. is introduced into shaft furnace (1) level with bustle plane (5) having been produced in a gasifier (2) then cooled and purified in a cyclone separator (12). Reduction gas is introduced below the bustle plane (5) at a temperature below that of the reduction gas introduced in the bustle plane and is preferably introduced into the shaft furnace (1) between 650.degree. and 750.degree. C. Increased carburization of the sponge iron is obtained. Increased carbon separation also results through a volume increase, particularly by increasing the cross-section through the lower part of the shaft furnace. Carburization is also assisted in that the ratio of the reduction gas quantity supplied below the bustle plane is made as large as possible compared with the reduction gas quantity supplied in the bustle plane.
    • 描述了从铁矿石生产海绵铁的方法,其通过热还原气体在还原竖炉中还原成海绵铁。 为此,将在750-900℃的温度下的还原气体引入竖炉(1)中,在气化器(2)中已经生产的刨平面(5),然后在旋风分离器 12)。 还原气体在沸腾平面(5)的下方导入低于引入珩平面的还原气体的温度,优选在650〜750℃之间引入竖炉(1)。增加海绵铁渗碳 获得。 增加的碳分离也可以通过体积增加而产生,特别是通过增加通过竖炉下部的横截面。 还辅助渗碳,使得与珩平面中供应的还原气体量相比,供给低于b平面的还原气体量的比例尽可能大。