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    • 1. 发明授权
    • 환원철의 제조 방법 및 제조 설비
    • 生产减少铁的方法和设备
    • KR101714995B1
    • 2017-03-09
    • KR1020167017278
    • 2015-03-10
    • 신닛테츠스미킨 카부시키카이샤
    • 구와우치유키마카베료지야마자키츠요시스즈키사토시다카하시시게키
    • C21B13/14C21B13/00C21B13/08C21B13/02C21B13/10F27B1/10F27B3/12
    • C21B13/14C21B13/0073C21B13/02C21B13/085C21B13/105C21B2300/02Y02P10/216
    • 성상변동이큰 원료나산화도가높은열질가루상태산화철원료를사용해도, 이미설치된회전노상로를대규모로개조하지않고, 저렴하면서용이한마무리환원설비의증설만으로, 안정적으로고금속화율의환원철을제조한다. 본발명제조방법은, 산화철함유원료와환원재를혼합해서괴성화한괴성물을, 2단계의환원로를사용해서환원하는환원철의제조방법이며, (i) 제1 단계의환원로로서, 회전노상식환원로를사용하고, (ii) 제2 환원로로서, CO 가스농도를소정범위로부화한환원분위기로한 회전가마식또는샤프트식의환원로를적용함으로써, 효율적으로고금속화율의환원철을제조할수 있다. 또한, (iii) 제1 단계의회전노상식환원로에의한제1 환원생성물을분급하고, 저금속화율의분체형상품만을, (iv) 회전가마식환원로에서환원, 조립함으로써, 고금속화율로일정한입경이상의환원철을효율적으로얻을수 있다.
    • 即使在使用性能变化大的原料或具有高氧化度的劣化粉末状氧化铁起始材料的情况下,也可以通过另外构建精整还原装置来稳定地制造金属化率高的还原铁 所述减光装置的成本较低且易于操作,而不会对现有的转底炉式炉进行任何大规模的改造。 一种生产还原铁的方法,所述方法包括将含有氧化铁的原料与还原材料的混合物凝聚并使用两步还原炉还原所得的附聚材料,其中:(i)旋转炉床式还原炉是 在第一步用作还原炉; 和(ii)在还原气氛中使用回转窑式或轴式还原炉作为第二还原炉,其中CO气体的浓度已经富集到预设范围,从而有效地生产具有高金属化的还原铁 比。 此外,可以通过以下方式有效地获得金属化率高的金属化率和晶粒尺寸在一定程度以上的还原铁:(ⅲ)在第一工序中分级回转炉式还原炉中得到的第一还原产物,得到粉状产物 金属化率低; 和(iv)然后在回转窑式还原炉中单独将金属化比低的粉末产品还原并造粒。
    • 6. 发明公开
    • 예비 환원철의 제조 방법
    • 生产预还原铁的工艺
    • KR1020100055539A
    • 2010-05-26
    • KR1020107008777
    • 2008-10-16
    • 신닛테츠스미킨 카부시키카이샤
    • 고후꾸히로끼구와우찌유끼나가이와따루후꾸다가즈히사사와이다까시
    • C21B13/10C22B1/16C22B1/24C22B7/02
    • C22B7/02C21B13/0046C21B13/105C21B13/143C21C5/38C22B1/245C22B1/248C22B5/10Y02P10/216
    • A process for producing a pre-reduced iron which comprises: a drying step in which a raw iron oxide material selected from the group consisting of iron industry dust resulting from a steelmaking process and iron ore is dried to a given water content; a mixing step in which the raw iron oxide material which has undergone the drying step is mixed with a reducing material having a given water content to obtain a mixture; a pulverization step in which the mixture obtained in the mixing step is pulverized to 70-500 μm in terms of 80% cumulative particle diameter in sieving; a kneading step in which the water content of the mixture obtained by the pulverization step is regulated and then the mixture is kneaded; a briquetting step in which the mixture which has undergone the kneading step is briquetted to obtain briquettes; and a production step in which the briquettes obtained in the briquetting step are reduced with a rotary hearth furnace to produce a pre-reduced iron.
    • 一种预还原铁的制造方法,其特征在于,包括:干燥工序,将从炼钢工序产生的铁工业粉末和铁矿石中选择的原料氧化铁材料干燥至给定的水含量; 将经过干燥步骤的原料氧化铁材料与具有给定水含量的还原材料混合以获得混合物的混合步骤; 粉碎步骤,其中将混合步骤中获得的混合物以80%的筛分累积粒径粉碎至70-500μm; 捏合步骤,其中通过粉碎步骤获得的混合物的含水量被调节,然后混合物被捏合; 将经过捏合步骤的混合物压块以获得压块的压块步骤; 以及生产步骤,其中在压块步骤中获得的团块用旋转炉床炉还原以产生预还原铁。
    • 7. 发明公开
    • 고온 배기 가스의 처리 방법
    • 高温废气处理方法
    • KR1020090117958A
    • 2009-11-16
    • KR1020097021053
    • 2008-04-03
    • 가부시키가이샤 고베 세이코쇼
    • 츠츠미히로후미미야카와유타카야소다다시
    • F27D17/00C21B13/10F28F25/12
    • F28C3/06B01D53/504B01D53/78B01D2258/0283C21B7/002C21B13/00C21B2100/44C21B2100/64F27D17/00F27D17/002F27D17/008Y02P10/283
    • This invention provides a method for treating a high-temperature waste gas, which can lower the temperature of the high-temperature waste gas to a proper temperature while effectively suppressing the deposition of molten components and dust contained in the high-temperature waste gas onto the inner wall of a cooling tower. This method comprises an introduction step of introducing the high-temperature waste gas into the cooling tower through a flue, and a cooling step of spraying cooling water against the high-temperature waste gas in the cooling tower to cool the high-temperature waste gas. In the introduction step, the high-temperature waste gas is introduced into the cooling tower through two flue systems so that the flow rate and flow volume in one of the system are equal to the flow rate and flow volume in the other system. The axial centerlines of the two flue systems are opposite to each other and are substantially perpendicular to the axial centerline of the cooling tower, as viewed from a direction along the axial centerline of the cooling tower.
    • 本发明提供了一种处理高温废气的方法,其可以将高温废气的温度降低到适当的温度,同时有效地抑制高温废气中所含的熔融组分和粉尘沉积到 冷却塔的内壁。 该方法包括将高温废气通过烟道引入冷却塔的引入步骤,以及将冷却水喷射到冷却塔中的高温废气以冷却高温废气的冷却步骤。 在引入步骤中,高温废气通过两个烟道系统引入冷却塔,使得系统中的一个系统中的流量和流量等于其他系统中的流量和流量。 两个烟道系统的轴向中心线彼此相对,并且从冷却塔的轴向中心线的方向观察时基本上垂直于冷却塔的轴向中心线。