A finite element thermal-conducting model of 80 t ladle has been established and stable state temperature field of the ladle with different conditions was calculated by means of software ANSYS to get distribution cloud pattern of temperature as each layer of ladle being up to heat saturation and outside surface temperature distribution curves of ladle wall. As well as the effect of materials and thickness of ladle wall
bottom and shielding agent on heat loss was analyzed. Results showed that the heat loss of ladle was mainly through wall of ladle and the thermal conductivity of adiabatic layer should less than 0.10 W/(m · ℃)
and as shielding agent thickness was about 40 mm
the thermal conductivity should be controlled below 0.05W/(m · ℃).