A COMPARISON OF THE KINETICS OF FLASH CALCINATION OF KAOLINITE IN DIFFERENT CALCINERS

Authors
MEINHOLD RH SALVADOR S DAVIES TW SLADE RCT
Citation
Rh. Meinhold et al., A COMPARISON OF THE KINETICS OF FLASH CALCINATION OF KAOLINITE IN DIFFERENT CALCINERS, Chemical engineering research & design, 72(A1), 1994, pp. 105-113
Citations number
25
Categorie Soggetti
Engineering, Chemical
Journal title
Chemical engineering research & design → ACNP
ISSN journal
02638762
Volume
72
Issue
A1
Year of publication
1994
Pages
105 - 113
Database
ISI
SICI code
0263-8762(1994)72:A1<105:ACOTKO>2.0.ZU;2-T
Abstract
We have determined reaction rates and activation energies for the dehy droxylation of kaolinite by flash calcination using two laboratory and two industrial pilot flash calciners under various conditions. The ki netics of dehydroxylation/water loss can be fitted to a 3-dimensional diffusion model, but changes in mechanism occur at high dehydroxylatio n levels and lead to deviations from that model. The effects of furnac e gas and particle size are discussed.