摘要
采用注水法并结合断层图像分析法对烧结矿床层内平均空隙率和径向空隙率分布规律进行研究,考察床层几何因子对床层平均空隙率的影响,以及在不同床层几何因子条件下,床层径向空隙率分布规律。研究结果表明:影响床层空隙率分布的主要因素为烧结矿颗粒直径和竖罐直径。其中,在较小床层几何因子(D/dp<120)条件下,烧结矿颗粒直径不变时,床层平均空隙率随床层直径的增大而减小;反之,床层平均空隙率不随颗粒直径和罐体直径的变化而变化;床层空隙率在壁面处达到最大值,并向床层中心衰减,在床层中心处达到最小值。
Water flood method and tomographic image analysis method were used to investigate sinter bed layer average voidage and radial voidage distribution. The effect of bed layer geometric factor on bed layer average voidage was studied, and the bed layer radial voidage distribution was also studied under the condition of different bed geometrical factors. The results show that the main factors that influence the bed layer voidage distribution are the sinter particle diameter and bed layer diameter of vertical tank. Among them, the bed layer average voidage decreases with the increase of bed layer geometric factor for a given sinter particle diameter under the condition of smaller bed geometrical factor（D/dp〈120）. On the contrary, the bed layer average voidage does not vary with the change of particle diameter or bed layer diameter. Bed layer voidage is the largest at the inner wall surface, then decays to the center of bed layer, and finally reaches the minimum value in the center of bed layer.
出处
《中南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2016年第1期8-13,共6页
Journal of Central South University:Science and Technology
基金
国家自然科学基金资助项目(51274065)
辽宁省科技计划项目(2015307001)~~
关键词
烧结矿
填充床
固定床
床层几何因子
空隙率
sinter mineral
packed bed
fixed bed
bed layer geometric factor
voidage
