Finite Element Analysis on Temperature-Stress of Permeable Refractory Ceramic under Working Process in Ladle

摘要

According to the practical physical dimension and processing parameters of ladle with bottom gas blowing in a factory,a geometrical model was established and mesh structure was completed,Eulerian multiphase model and porous media model were adopted for the two-phase flow in ladle,which was coupled,the effect of temperature field and thermal stress in course of working process of permeablegas refractory ceramic was studied by finite element approach.The correlations between processing,structure,and high-temperature mechanical properties were discussed,and the material and structure of permeable-gas ceramic were designed to optimum.The results show that:The steady gas flow rate can avoid wearing of permeable-gas refractory ceramic from cataclysm of temperature-stress; After the material and structure of permeable-gas refractory ceramic are optimized,the effect on ceramic wearing of temperature-stress in condition of oxygen washing is weakened.It is an important guiding for preparation of permeable-gas refractory ceramic with long life,which will make for highly active refining ladle.