A mathematical model for the flash calcination of dispersed CaCO/sub 3/ and Ca(OH)/sub 2/ particles

Journal Article · Tue Jan 31 23:00:00 EST 1989 · Ind. Eng. Chem. Res.; (United States)

DOI:https://doi.org/10.1021/ie00086a005· OSTI ID:6049684

Silcox, G D; Kramlich, J C; Pershing, D W

A mathematical model for the flash calcination of Ca(OH)/sub 2/ and CaCO/sub 3/ is presented. The model describes the decomposition of the parent material at the reactant-product interface, the diffusion of CO/sub 2/ or H/sub 2/O through the growing CaO layer, and the sintering of the CaO layer. The model is qualitative, but it provides useful estimates of peak CO/sub 2/ pressures on the CaO layer, relative rates of surface area development and loss for Ca(OH)/sub 2/ and CaCO/sub 3/, the effect of particle size, and the effects of time and temperature.

• Research Organization: Dept. of Chemical Engineering, Univ. of Utah, Salt Lake City, UT (US); Energy and Environmental Research Corp., Irvine, CA (US)
• OSTI ID: 6049684
• Journal Information: Ind. Eng. Chem. Res.; (United States), Journal Name: Ind. Eng. Chem. Res.; (United States) Vol. 28:2; ISSN IECRE
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
99 GENERAL AND MISCELLANEOUS
990230 -- Mathematics & Mathematical Models-- (1987-1989)
ALKALINE EARTH METAL COMPOUNDS
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CALCIUM HYDROXIDES
CALCIUM OXIDES
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CARBONATES
CHALCOGENIDES
CHEMICAL REACTION KINETICS
DIFFUSION
FABRICATION
HYDROGEN COMPOUNDS
HYDROXIDES
KINETICS
MATHEMATICAL MODELS
OXIDES
OXYGEN COMPOUNDS
PARTICLE SIZE
REACTION KINETICS
SINTERING
SIZE
TEMPERATURE DEPENDENCE
TIME DEPENDENCE
WATER