摘要
宝钢1#高炉二次灰粒径主要以小于149μm为主,约为80%,粒度分布是2个正态分布曲线的组合.重力灰粒径主要以74～297μm为主,约为65%,粒度分布是3个正态分布曲线的组合.通过岩相显微分析确定了高炉炉尘中未消耗煤粉和焦炭存在的不同结构形态.根据炉尘中煤粉和焦炭中碳的消耗程度,由显微分析结果进行计算,给出了在常村煤工业试验炉尘中未消耗煤粉碳所占比例的公式.
About 80 % of particles in sludge were smaller than 149 μm in diameter at 1 ^# BF in Baosteel of China and the particle distribution was composed of two normal distribution curves. While approximately 65% of particles in dust were about 74-297 μm in diameter and the particle distribution was composed of three normal distribution curves. Different microstructures of unused pulverized coal and coke in dust were found through petrographic microscopic analysis. According to the utilized carbon degree of unused pulverized coal and coke, an equation of the ratio of unused pulverized coal to coke in Changcun industrial experiment dust was proposed by means of the microscopic analysis results.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2006年第6期559-565,共7页
Journal of University of Science and Technology Beijing
基金
国家钢铁联合基金资助项目(No.50174006)
关键词
高炉炼铁
喷煤
炉尘
含碳物质
iron-making in BF
pulverized coal injection （PCI）
dust
carbonaceous matter
