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    • 11. 发明授权
    • Process for the production of pig iron
    • 生铁生产工艺
    • US4673432A
    • 1987-06-16
    • US819404
    • 1986-01-16
    • Rolf Hauk
    • Rolf Hauk
    • C21B13/02C21B5/00C21B11/02C21B13/00C21B13/10C21B13/14
    • C21B13/002C21B13/14Y02P10/122Y02P10/128Y02P10/136
    • A process for the production of pig iron from iron ore is disclosed. The pig iron is firstly converted to sponge iron in a direct reduction shaft furnace (1) and then the sponge iron is converted to pig iron in a melt-down gasifier (2). The shaft furnace and melt-down gasifier are interconnected by means of downcomers (6). Apart from the sponge iron, the melt-down gasifier is supplied with a carbon carrier in the form of coke and oxygen-containing gas. The gas produced in the melt-down gasifier is supplied to the shaft furnace (1) in the form of reduction gas via downcomers (6), pipe (8), cyclone separator (12) and pipe (4). By means of pipes (10 and 11), cooled, cleaned blast furnace gas from shaft furnace (1) is admixed as cooling gas with the gas produced in the melt-down gasifier. With the aid of a screen (15), the melt-down gasifier is supplied with the fine fraction via pipe (7) and the shaft furnace is supplied via pipe (16) with the coarse fraction of the coke required for the operation of the plant. The coke introduced into the shaft furnace passes through the same and then enters the melt-down gasifier in preheated, dried form. The coke in the shaft furnace also leads to a reduction of CO.sub.2 and H.sub.2 O to CO and H.sub.2 and also reduces the sticking tendency of the sponge iron.
    • 公开了一种从铁矿石生产生铁的方法。 在直接还原竖炉(1)中首先将生铁转化为海绵铁,然后在熔融气化炉(2)中将海绵铁转化为生铁。 竖炉和熔化气化器通过降液管(6)相互连接。 除了海绵铁之外,熔化气化器还供应有焦炭和含氧气体形式的碳载体。 在熔化气化炉中产生的气体通过降液管(6),管道(8),旋风分离器(12)和管道(4)以还原气体的形式供应到竖炉(1)。 通过管道(10和11),将来自竖炉(1)的冷却,清洁的高炉煤气与作为熔化气化器中产生的气体的冷却气体混合。 借助于筛网(15),熔化气化器被供给精细馏分通过管道(7),并且竖炉通过管道(16)供应用于操作所需的焦炭的粗部分 厂。 引入竖炉的焦炭通过它,然后以预热干燥的形式进入熔化气化炉。 竖炉中的焦炭还导致CO 2和H 2 O还原成CO和H 2,并且还降低了海绵铁的粘附倾向。
    • 14. 发明授权
    • Process for producing pig iron
    • 生铁生产工艺
    • US4913733A
    • 1990-04-03
    • US788621
    • 1989-10-17
    • Rolf Hauk
    • Rolf Hauk
    • C21B11/02C21B11/00C21B13/00C21B13/02C21B13/14
    • C21B13/14C21B11/00C21B13/002Y02P10/122Y02P10/128Y02P10/136
    • A process for producing pig iron is described involving the use of a reduction shaft furnace 1 and a melt-down gasifier 2. The sponge iron produced from iron ore in the reduction shaft furnace is fed into the melt-down gasifier and converted into a pig iron melt. The gas produced in the melt-down gasifier is passed as reducing gas into the reduction shaft furnace both via a cyclone separator 11 and a line 12 and directly via a line 13. The top gas leaving the reduction shaft furnace, after passing through a scrubber 4, is largely returned via a CO.sub.2 scrubber 6, in which CO.sub.2 and H.sub.2 O are removed from the gas, in such a way that it can be used for forming the reducing gas in the melt-down gasifier and also as a cooling gas for the reducing gas produced in said gasifier.
    • 描述了生产生铁的方法,其涉及使用还原竖炉1和熔化气化器2.在还原竖炉中由铁矿石生产的海绵铁进料到熔化气化器中并转化成猪 铁熔。 在熔化气化器中产生的气体通过旋风分离器11和管线12直接通过管线13作为还原气体进入还原炉中。经过还原炉的顶部气体经过洗涤器 如图4所示,大部分通过CO 2洗涤器6返回,其中CO 2和H 2 O从气体中除去,使得其可以用于在熔化气化器中形成还原气体,并且还可以作为冷却气体 在所述气化器中产生的还原气体。
    • 16. 发明授权
    • Process for the production of pig iron from fine ore using plasma burner
    • 使用等离子体燃烧器从细矿石生产生铁的工艺
    • US4806154A
    • 1989-02-21
    • US914373
    • 1986-10-02
    • Rolf Hauk
    • Rolf Hauk
    • C21B13/00C21B13/12C21B13/14
    • C21B13/14C21B13/002C21B13/125Y02P10/136
    • A process for the production of pig iron from fine ore is produced, in which the fine ore is prereduced in one or more reduction units (1, 2). The resulting sponge iron is subsequently melted down and finally reduced in a melt-down gasifier (3) with the aid of at least one plasma burner (9) and a solid carbonaceous reducing agent. The sponge iron is fed into the lower part of the melt-down gasifier in the vicinity of the plasma burners, preferably directly over the latter, above the collecting melting bath and slag. The solid carbonaceous material, particularly low grade coal required for final reduction is fed from above (18) into the melt-down gasifier. It is converted in the latter into coke and forms in the lower part of the gasifier a fluidized bed, which is maintained by the plasma gas, additionally introduced oxygen and CO formed during final reduction.
    • 制造从细矿石生产生铁的方法,其中细矿石在一个或多个还原单元(1,2)中预还原。 随后,所形成的海绵铁在至少一个等离子体燃烧器(9)和固体碳质还原剂的帮助下熔化并最后在熔化气化器(3)中还原。 海绵铁在等离子体燃烧器附近的熔化气化器的下部进料,优选直接位于收集熔池和熔渣上方。 将最终还原所需的固体碳质材料,特别是低级煤从上面(18)进料到熔化气化器中。 其在后者中被转化为焦炭并在气化器的下部形成流化床,其由等离子体气体维持,另外在最终还原期间引入氧和CO。