钢铁钒钛2025，Vol.46Issue(5)：23-32,10.DOI:10.7513/j.issn.1004-7638.2025.05.003
高炉渣熔滴连续凝固过程的数值模拟
Numerical simulation of continuous solidification process for blast furnace slag droplets
摘要
Abstract
The crystallization behavior of granulated blast furnace slag droplets during cooling reduces their commercial value.In order to investigate the solidification characteristics of droplets under varying cooling conditions,a numerical simulation of the continuous solidification process was performed by integrating a droplet flight model with an enthalpy-based slag crystallization model.The results show that an increase in droplet size leads to a significant increase in the distance required for surface crust formation,and also res-ults in an increase in the average crystalline phase content after cooling.Droplet size becomes a key factor governing solidification behavior and crystalline phase growth by influencing internal heat conduction rates and cooling uniformity.A 5-mm molten droplet at 15 m/s initial velocity requires 16 m horizontal flight to avoid remelting during cooling;increasing the primary fluidized bed convective heat transfer coefficient from 70 W·m-2·K-1 to 150 W·m-2·K-1 shortens this distance to 12 m.Two-stage molten droplet cooling must be matched:extending flight distance during surface crust formation reduces bed cooling intensity require-ments,while increasing bed cooling intensity decreases granulation device size.关键词
高炉渣/焓/凝固/结晶/数值模拟Key words
blast furnace slag/enthalpy/solidification/crystallization/numerical simulation分类
矿业与冶金引用本文复制引用
冯鹏博,楼国锋,武新晨,肖永力..高炉渣熔滴连续凝固过程的数值模拟[J].钢铁钒钛,2025,46(5):23-32,10.基金项目
河北省重点研发计划项目(22373805D). （22373805D）
