铁矿石竖炉磁化焙烧热工参数优化的研究与实践  

Study and Practice on Thermal Parameters Optimization of the Iron Ore Magnetized Roasting of the Shaft Furnace

作　　者：权芳民 张志刚 田开慧 魏世龙 刘长东 QUAN Fang-min;ZHANG Zhi-gang;TIAN Kai-hui;WEI Shi-long;LIU Chang-dong(Iron and Steel Research Institute of Hongxing Iron ＆ Steel Co.Ltd.,Jiuquan Iron and Steel（Group）Corporation,Jiayuguan 735100,China)

机构地区：[1]酒泉集团宏兴股份公司钢铁研究院,甘肃嘉峪关735100

出　　处：《甘肃冶金》2018年第5期1-5,共5页Gansu Metallurgy

摘　　要：针对酒钢镜铁矿矿物组成复杂及结晶粒度较细特点,通过将100 m^3鞍山式竖炉还原煤气量从2 000～2 200m^3/h降低到1 000～1 200 m^3/h、加热煤气量从3 700～3 800 m^3/h提高到4 200 m^3/h左右、助燃空气量从3 000～3200 m^3/h提高到4 200 m^3/h左右,使铁矿石还原温度由450～550℃提高到500～650℃,铁矿石焙烧质量得到提高,竖炉产能提高10%以上,竖炉排出废气中CO含量由优化前11.4%降低到优化后3.0%左右。The paper aimed at JISCO Jingtieshan ore characteristics of complex composition and fine crystalline grain size, by the way of reducing the shaft furnace reducing gas volume from 2 000- 2 200 m^3/h to 1 000- 1 200 m^3/h, increasing the heating gas volume from 3 700 - 3 800 m^3/h to about 4 200 m^3/h, combustion-supporting air volume from 3 000- 3 200 m^3/h to 4 200 m^3/h, and the iron ore reduction temperature from 450- 550 ℃ to 500 - 650℃, the roasting quality of the iron ore was improved, the capacity of the shaft furnace was improved by more than 10%, the CO content in exhaust gas was decreased from 11.4% to about 3.0% after optimization.

关 键 词：铁矿石 竖炉 磁化焙烧 参数优化 

分 类 号：TD927[矿业工程—选矿]