Mathematical Model and Numerical Simulation of Temperature Field for Hearth and Hearth Bottom of Long Campaign Blast Furnace

The hearth and hearth bottom life of blast furnace is one of the key factors affecting blast furnace life. In order to make the hearth and hearth bottom have the same life-span as that of blast furnace, one of effective measures is to form a layer of slag-metal skull on the hearth and hearth bottom. In order to form a layer of slag-metal skull, the 1 150 ℃ isothermal line should be moved off the hot surface of the hearth and hearth bottom during designing blast furnace. Therefore, it is necessary to compute the temperature field of the hearth and hearth bottom. So some usual mathematical models of the temperature field for the hearth and hearth bottom of blast furnace were discussed. The calculating software of the temperature field of the hearth and hearth bottom was developed.