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The three dimensional heat transfer and thermal stresses of a steel cooling stave in
a blast furnace are modeled and analyzed. The temperature in a thermal stress field of cooling
stave is calculated by using the finite element method software ANSYS. The radiation heat
transmitted from solid materials (coke, ore, and flux) to inner surface of the cooling stave is
neglected in the computational analysis. In this analysis two different types of lining materials
are taken. These are the silicon carbide brick and high alumina brick. These lining materials
are used at different loads, i.e., gas temperature from 773 K to 1573 K, as well as stave with
skull is used at this gas temperature. Different assumptions and boundary conditions are taken
in modeling as well as in analysis. Kinds of parameters are taken for the heat transfer analysis
of cast steel cooling stave in a blast furnace. The water temperature is chosen as 303 K. The
results indicate that the maximum temperature and thermal stress of hot face are highest in
silicon carbide brick and lowest in high alumina brick. The peel stress and von Mises stress
are calculated. The result indicates that the silicon carbide brick is better, so that it can
withstand various circumstances which affect the life of the cooling stave and the blast
furnace. Therefore the suitable lining for the stave is the silicon carbide brick.
Keywords: stave; ANSYS; lining; loads; peel stress; von Mises stress |
full paper (pdf, 1280 Kb)