鞍钢使用大比例赤铁矿生产氧化球团的研究  

Production of oxidized pellets in Ansteel by using a high ratio of hematite

作　　者：翟立委[1] 周明顺[1] 姜鑫[2] 刘杰[1] 张辉[1] 徐礼兵[1] 沈峰满[2] 

机构地区：[1]鞍钢股份有限公司技术中心,辽宁鞍山114009 [2]东北大学材料与冶金学院,沈阳110004

出　　处：《材料与冶金学报》2014年第1期1-5,14,共6页Journal of Materials and Metallurgy

基　　金：自然科学基金资助(51074040)

摘　　要：针对鞍山矿业大孤山球团厂生产氧化球团用磁铁矿不足的问题,进行了大比例赤铁矿生产氧化球团的实验室研究和半工业化链蓖机—回转窑生产试验.实验室研究结果表明,鞍千赤铁矿配比不超过40%时,球团矿抗压强度大于2 500 N/个,低温还原粉化指数RDI+3.15大于82.05%,还原膨胀指数RSI小于15.02%,均能满足现代化大高炉生产的要求.工业试验表明,鞍千赤铁矿配比不超过40%时,生产稳定,产品质量全面满足鞍钢炼铁原料的技术要求.2011年进行了推广应用,生产实际结果表明,2011年比基准期增长创效4.2亿元.Recently magnetite is not sufficient to produce oxidized pellets in Ansteel. So, a high ratio of hematite of pellets was investigated at a lab scale and a pilot - plant scale. The experimental results in lab showed that when the ratio of hematite is less than 40% , the compression strength of pellet is more than 2 500 N, the Reduction Disintegration Index at low temperatures （RDI＋3.15 ） is more than 82. 05% , and the Reduction Swelling Index （RSI） is less than 15.02%. The pilot - plant trial of traveling grate - rotary kiln showed that the production is stable and the pellets can meet the requirements of modem blast furnace when the ratio of hematite is less than 40%. Therefore, 40% of hematite was used in the pellet production in 2011 in Ansteel, and a profit of 420 million CNY was obtained.

关 键 词：赤铁矿 球团 高炉 链蓖机一回转窑 

分 类 号：TF556[冶金工程—钢铁冶金]