Effect of heating rate on the kinetics of limestone calcination

Analysis of the Variable Influence and Energy Storage Performance in Preparation of Solar Energy Storage Materials via Modification of Carbide Slag Using MnO2 through Wet Doping

“…The shrinking core model is determined by parameters at different reaction stages, which must be calculated for the absorbent according to the experimental data. G ( X N ) and P ( X N ) are two functions related to carbonation conversion. , G false( X N false) = 1 − false( 1 − X N ) 1 / 3 P false( X N false) = 1 − 3 false( 1 − X N ) 2 / 3 + 2 false( 1 − X N false) k and E a can be calculated according to the Arrhenius equation: k = k 0 .25em exp ( prefix− E a R T ) where k 0 is the pre-exponential factor (cm/s), E a is the activation energy of the chemical reaction (kJ/mol), R is the gas constant (8.314 J/(mol·K)), and T is the carbonation temperature (K).…”

“…G(X N ) and P(X N ) are two functions related to carbonation conversion. 46,47 G X X ( ) 1 ( 1) 1) 2( 1)…”

Impact of Limestone Surface Impurities on Quicklime Product Quality

“…The thermal decomposition, or calcination, of calcite has been extensively studied. Ratelimiting processes have been defined [1], and the effects of steam [2], pressure [3], CO 2 partial pressure [4], heating rate [5], and impurities [6][7][8], among other parameters, have been identified. Of the proposed calcination mechanisms, a mechanism involving intermediate "activated lime" CaO*(s), originally proposed by Hyatt et al in 1958 [9], has received support in more recent studies [4,10].…”