低含碳球团配加MgO试验研究  

Experiment Study on Low Carbon Bearing Pellet With MgO

作　　者：李金莲[1] 刘万山[1] 任伟[1] 李艳茹[1] 

机构地区：[1]鞍钢股份有限公司技术中心,辽宁鞍山114009

出　　处：《钢铁》2011年第2期18-21,共4页Iron and Steel

摘　　要：为得到优质高强度的高炉金属化球团,研究了不同MgO/SiO2比值和焙烧温度对煤粉添加量为5%的含碳球团性能的影响。结果表明：当含碳球团中的煤粉配比为5%、膨润土配比1.5%、MgO/SiO2一定时,随着焙烧温度（1 200-1 350℃）的升高,成品球团抗压强度呈先增加后降低的趋势,且在1 300℃时强度最大（2 138 N/球）。焙烧温度过低,球团抗压强度较低,但焙烧温度过高,球团内部过熔化,产生大量孔洞,强度也较低。An investigation on iron-coal pellet with MgO was carried out in order to improve its compression strength.It shows that iron-coal composite pellet＇s strength increase first and then decrease with an assembling roasting temperature（1 200-1 350 ℃） in the condition 5% coal and 1.5% dolominite,and got its maximum at 1 300 ℃,while the temperature is higher than that value,the compression strength will be decreased due to the inner pore,and lower than it,the strength was detoreated.

关 键 词：含碳球团 MGO 抗压强度 

分 类 号：TF046.6[冶金工程—冶金物理化学]