铁精矿氧化球团回转窑直接还原试验研究  

Experimental Study on Direct Reduction of Iron Concentrate Oxidized Pellets in Rotary Kiln

作　　者：吴振中[1] 贺明 陈得贵[1] WU Zhenzhong;HE Ming;CHEN Degui(Gansu Jiu Steel Group Hongxing Iron and Steel Co.Ltd.,Jiayuguan 735100,China)

机构地区：[1]甘肃酒钢集团宏兴钢铁股份有限公司,甘肃嘉峪关735100

出　　处：《甘肃冶金》2024年第2期64-66,70,共4页Gansu Metallurgy

摘　　要：采用新疆某地生产的铁精矿氧化球团,在Φ2.8 m×48 m回转窑中试装置开展煤基直接还原试验,研究外配碳量、投料量、还原时间、供风结构等因素对铁精矿氧化球团还原效果的影响。试验结果表明,在投料量4 t/h、外配碳比40%、还原时间266 min、采用窑背风机多点供风模式下,金属化球团的金属化率可以达到87.55%。Using iron concentrate oxidized pellets produced in a certain area of Xinjiang,Q2.8 m×48 m rotary kiln pilot plant was used to conduct coal based direct reduction experiments,studying the effects of factors such as external carbon content,feeding amount,reduction time,and air supply structure on the reduction effect of iron concentrate oxidized pel-lets.The experimental results show that under the feeding amount of 4 Vh,external carbon ratio of 40%,reduction time of 266 minutes,and the use of multi-point air supply mode with kiln back fan,the metallization rate of metalized pellets can reach87.55%.

关 键 词：铁精矿氧化球团 回转窑 煤基直接还原 金属化球团 金属化率 

分 类 号：TF548[冶金工程—钢铁冶金]