ABSTRACT

During the charging process of the blast furnace, the charging sequence of the iron-bearing burden directly determines the mixing uniformity of sinter, pellet and lump ore in the throat. In this study, according to four different charging sequences commonly used in the production of a 5500 m³ blast furnace in China, the influence of the charging sequence of the iron-bearing burden on the uniformity of burden basicity distribution is analysed by Discrete Element Method simulation. The main conclusions are as follows: (1) The trend shown by the sinter, pellet and lump ore mass fractions during the hopper discharging process is determined by the hopper structure and the initial burden distribution in the hopper. (2) The trend of the iron-bearing burden mass fraction from the wall region to the centre region of the throat is consistent with the trend of the iron-bearing burden mass fraction during the hopper discharging process.

摘要

在高炉装料过程中，含铁炉料的装料顺序直接决定了烧结矿、球团矿和块矿在喉部的混合均匀度。^{在本研究中，根据生产 5500 m 3}常用的四种不同装料顺序在我国高炉中，采用离散元法模拟分析了含铁炉料的装料顺序对炉料碱度分布均匀性的影响。主要结论如下： (1) 料斗卸料过程中烧结矿、球团矿和块矿质量分数所呈现的趋势是由料斗结构和料斗内的初始装料分布决定的。(2)含铁料质量分数从壁区到喉部中心区的趋势与料斗卸料过程中含铁料质量分数的趋势一致。