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A mathematical model of calcination of limestone in rotary kiln
Author(s) -
Lee Manseung,
Lee Sihyung
Publication year - 1999
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.199905595
Subject(s) - calcination , rotary kiln , kiln , combustion , boundary value problem , mechanics , mathematical model , energy balance , thermodynamics , materials science , chemistry , mineralogy , metallurgy , mathematics , physics , mathematical analysis , organic chemistry , statistics , biochemistry , catalysis
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.