Process for injecting a reducing agent including ash-bearing bituminous
coal into the hearth of a blast furnace
    1.
    发明授权
    Process for injecting a reducing agent including ash-bearing bituminous coal into the hearth of a blast furnace 失效
    将包含灰灰烟煤的还原剂注入高炉炉床的方法

    公开(公告)号:US4428769A

    公开(公告)日:1984-01-31

    申请号:US299005

    申请日:1981-09-03

    IPC分类号: C21B5/00 C21B5/04

    CPC分类号: C21B5/003

    摘要: In a process for injecting a fine-grain carbon carrier including ash-bearing bituminous or hard coal into a blast furnace hearth, use is made of a mix of fine-grain bituminous coal and at least one other solid fine-grain ash-bearing carbon carrier. The composition of the mix is so selected that the degree of basicity of the overall resulting ash of the mixture is adapted to the degree of basicity of the furnace slag.

    摘要翻译: 在将含有灰分的沥青或硬煤的细粒碳载体注入高炉炉床的过程中,使用细粒度的烟煤和至少一种其它固体细粒含灰碳的混合物 载体 混合物的组成如此选择,使得混合物的总体灰分的碱度适应于炉渣的碱度。

    Method of operating a blast furnace using coal auxiliary combustible
    4.
    发明授权
    Method of operating a blast furnace using coal auxiliary combustible 失效
    使用煤辅助燃烧器操作高炉的方法

    公开(公告)号:US3966457A

    公开(公告)日:1976-06-29

    申请号:US638159

    申请日:1975-12-05

    IPC分类号: C21B5/00

    CPC分类号: C21B5/003

    摘要: Coal of a granulometry of 0.1 to 20 mm is injected into the blast-pipe manifold surrounding an iron-smelting blast furnace. The temperature of between 900.degree.C and 1300.degree.C in this manifold thermally disintegrates the coal by vaporizing volatile components such as water in the coal and reduces the coal to a mesh size of at most 1 mm. The fine particles of coal so produced are blown into the blast furnace through the tuyeres.

    摘要翻译: 将0.1〜20mm的粒度的煤注入围绕铁冶炼高炉的鼓风管内。 在该歧管中,900℃至1300℃之间的温度通过汽化煤中的挥发性成分如水分而使煤分解,并将煤减少到至多1mm的筛目尺寸。 这样生产的煤颗粒通过风嘴吹入高炉。