摘要
针对白云鄂博铁精矿的特殊性及包钢624 m^(2)带式焙烧工艺铁料结构,进行了配加2%EP灰及2%酸洗氧化铁皮的制备氧化球团矿试验研究,结果表明:配加2%EP灰后,可实现膨润土配比降低0.5%,为了保证球团矿抗压强度≥2 500 N,焙烧温度需提高20~30℃;配加2%氧化铁皮后,生球性能小幅改善,为了保证球团矿抗压强度≥2500 N,焙烧温度需提高50~60℃;配加少量酸洗氧化铁皮或EP灰,其化学成分及还原性能可以满足高炉生产需求。
Aiming at the particularity of the Bayan Obo iron concentrate and the iron material structure of Baotou Steel's 624m^(2) belt roasting process,a stone oxide pellet with 2%EP ash and 2%pickling iron oxide scale was developed.The result show that:After adding 2%EP ash,the ratio of bentonite can be reduced by 0.5%.In order to ensure the compressive strength of pellets≥2500 N,the roasting temperature needs to be increased by 20℃to 30℃;after adding 2%iron oxide scale,the green pellet performance is slightly reduced.Improvement,in order to ensure the compressive strength of pellets≥2500 N,the roasting temperature needs to be increased by 50~60℃;with a small amount of pickled iron oxide scale or EP ash,its chemical composition and reducing performance can meet the blast furnace production requirements.
作者
魏国良
刘曙光
付国伟
韩峰
吕志义
Wei Guoiang;Liu Shuguang;Fu Guowei;Han Feng;Lv Zhiii(Rare Earth Steel Ironmaking Plant of Inner Mongolia Baotou Steel Co.,Ltd.,Baotou 014010,China;Technical Center of Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,China)
出处
《冶金标准化与质量》
2024年第5期30-32,共3页
Metallurgical Standardization & Quality
关键词
白云鄂博铁精矿
球团
EP灰
酸洗氧化铁皮
baiyun obo iron concentrate
pellet
steel making dust
pickling iron oxide scale
