摘要
采用农作物废弃物自制炭粉与铁精矿粉制备含碳球团,对含碳球团的造球特性进行了试验研究。结果表明:含碳球团的强度与造球物料的粒度、水分含量、膨润土加入量、焙烧还原温度等有关。物料粒度细、膨润土含量增加能提高球团的强度,适宜的碳氧比为1.0,水分和黏结剂配比分别为8.0%和6.5%;随着焙烧还原温度的提高,球团强度相应提高,当温度达到1 200℃时,随着金属铁快速还原与连晶的形成,球团落下强度为15次/个,抗压强度为1 650 N/个,能满足高炉入炉料的要求。
Prepared carbon bearing pellets from the carbon powder and iron concentrate of agricultural residuals and researched their pelletizing properties. The result shows that the strength of the carbon beating pellets is related to the size of pelletizing materials, moisture content, bentonite content and the temperature of roasting and reduction, etc. The small size of raw materials and the increasing bentonite content can improve the pellet strength. The suitable carbon oxygen ratio is 1.0, and the proper proportions of moisture and binder are 8.0% and 6.5%, respectively. The pellet strength increases with the rise of the reduction temperature. When the temperature reached 1 200℃, the drop strength of pellet is 15 times/ind and the compressive strength is 1 650 N/ind with the fast reduction of iron and the formation of crystal stock. It meets with the requirements of blast furnace.
出处
《湖南工业大学学报》
2013年第6期73-77,共5页
Journal of Hunan University of Technology
基金
湖南省科技计划基金资助项目(2012FJ3037)
关键词
含碳球团
球团强度
农作物废弃物
carbon bearing pellet
pellet strength
agricultural residual
