Abstract
A mathematical model of the rotary kiln for the calcination of limestone was developed by considering calcination kinetics, mass and energy balance of solid and gas. A system of strongly nonlinear equations with two point boundary conditions were numerically solved. The measured outlet temperature of gas and calculated combustion temperature were used as boundary conditions. By applying this developed model, the axial temperature profiles of gas, solid and wall and the axial concentration profiles of solid and gas were calculated from operating conditions. The temperature of outer wall and limestone conversion calculated by model were in good agreement with those measured from running rotary kiln at Kwangyang Steel Works.
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