摘要
为研究装料模式对并罐高炉料面炉料分布的影响,建立了国内某5 500 m3实际高炉并罐式无钟炉顶系统全模型,利用离散单元法分别对矿(A)-矿(B)-焦和矿-焦两种装料模式下炉料从矿焦槽运动至料面全过程进行数值计算,对比分析了装料模式对料面炉料分布的影响。结果表明,由于A矿与B矿布入料面时落点轨迹不重合,导致两种装料模式下料面炉料分布不同。在料面径向上,装料模式对料面矿石体积分布和矿焦比分布影响较小。在料面周向上,矿-矿-焦装料模式和矿-焦装料模式下料面矿石体积分布标准差分别为0.133和0.147,矿-矿-焦装料模式和矿-焦装料模式下料面矿焦比分布标准差分别为0.074和0.086,矿-矿-焦装料模式下矿石体积分布和矿焦比分布更均匀。
In order to investigate the influence of charging patterns on the burden distribution of the stock surface in blast furnace with two parallel hoppers,the full model of bell-less top system with two parallel hoppers in actual 5 500 m^3 blast furnace was established,and the motions of burden materials in the cases of the ore（A）-ore（B）-coke charging pattern and the ore-coke charging pattern were calculated by Discrete Element Method,respectively. The effects of charging patterns on the burden distribution of the stock surface were comparative and analyzed. The results show that the burden distribution of the stock surface is different in two different charging patterns,because the burden falling trajectory is not coincident while the ore-A and ore-B are charged into the stock surface. In the radial direction of the stock surface,the influence of charging patterns on the ore volume distribution and the ore/coke ratio distribution of the stock surface is negligible. In the circumferential direction of the stock surface,the standard deviation of the ore volume distribution of the stock surface in the ore-ore-coke charging pattern and the ore-coke charging pattern is 0.133 and 0.147,respectively,and the standard deviation of the ore/coke ratio distribution of the stock surface in the ore-ore-coke charging pattern and the ore-coke charging pattern is 0.074 and 0.086,respectively. The ore volume distribution and the ore/coke ratio distribution of the stock surface is more uniform in the ore-ore-coke charging pattern.
出处
《钢铁》
CAS
CSCD
北大核心
2017年第12期8-15,共8页
Iron and Steel
基金
国家自然科学基金资助项目(61333002)
关键词
并罐
装料模式
炉料分布
离散单元法
parallel hoppers
charging pattern
burden distribution
discrete element method
