Premium
Kinetic parameters for decomposition of calcium carbonate
Author(s) -
Rajeswara Rao T.
Publication year - 1993
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450710322
Subject(s) - calcium carbonate , decomposition , kinetic energy , carbonate , calcium , environmental science , mineralogy , geology , chemistry , materials science , metallurgy , physics , organic chemistry , quantum mechanics
The intrinsic reaction rate constant for calcium carbonate decomposition was determined based on a structural model (grain model). Experiments were conducted with thin slab type pellets (thickness 0.044 ‐ 0.086 cm) in the temperature range of 670‐740°C under isothermal conditions for determining the rate constant. The effective diffusivity, effective thermal conductivity, and heat and mass transfer coefficients were determined from experimental data obtained from cylindrical pellets (L/D ≈ 1) at 840 and 875°C, taking into consideration the temperature variations in the solid. The results obtained are in good agreement with the values reported in literature.