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    • 8. 发明授权
    • Method for manufacturing reduced iron briquettes
    • 制造还原铁团块的方法
    • US5930579A
    • 1999-07-27
    • US549205
    • 1995-10-27
    • Hiroshi NagumoYutaka InadaYoshinori KannoOsamu Tsuge
    • Hiroshi NagumoYutaka InadaYoshinori KannoOsamu Tsuge
    • C21B13/00B22F3/24C21D1/18
    • C21B13/0086
    • A method for manufacturing reduced iron briquettes, wherein reduced iron obtained by a direct reduction method is made into briquettes using a briquette machine, and whereafter the hot briquettes are subject to gradual cooling at a cooling rate in the range of 150.degree. C. to 250.degree. C. per minute using water spray. The reduced iron briquettes thus obtained are (a) less prone to breakage break during storage and transport; (b) less prone to degeneration into powder accompanying such breakages etc.; and (c) also display an excellent degree of metallization. Hence, the loss in weight during storage and transport can be reduced, and the harmful effects caused by dust to the transport vehicles, ships, loading/unloading equipment, and operators of the same can be reduced. Also, since the number of breakages is reduced, there is also a reduction in the amount of any re-oxidation of the reduced iron which tends to occur at newly exposed faces, whereby a product of more consistent quality can be obtained.
    • 制造还原铁团块的方法,其中通过直接还原法得到的还原铁使用压块机制成压块,然后将热压块以150℃至250℃的冷却速率逐渐冷却 每分钟使用水喷雾。 如此获得的还原铁团块是(a)在储存和运输期间不容易断裂; (b)不易发生变质,伴随这种破损等; 和(c)也显示优异的金属化程度。 因此,可以减少储存和运输中的重量损失,并且可以减少对运输车辆,船舶,装卸设备和操作者的灰尘造成的有害影响。 此外,由于破损次数减少,所以在新露出的面上容易发生的还原铁的任何再氧化的量也减少,由此可以获得更一致的品质的产品。