Thermodynamics and kinetics of dolomite thermal dissociation
https://doi.org/10.17073/0021-3438-2016-2-18-25
Abstract
Here we present the results of studying thermodynamic principles and kinetics of thermal dissociation of dolomites in the Urals deposits. Dolomite samples vary by fractions and grain size of calcite inclusions that determines the differences in their dissociation kinetics. It was found that dolomite dissociation occurs based on the two-stage model limited at the first stage by the reaction on a three-dimensional surface and at the second stage – by the kinetic equation with a degree close to 0,3 and 0,6.
Keywords
magnesium production,
silicothermy,
thermodynamics,
kinetics,
dolomite,
roasting,
dissociation,
modeling
About the Authors
M. V. Belousov
Ural Federal University (UrFU)
Russian Federation
Russian Federation
the Department of aluminium metallurgy
Cand. Sci. (Eng.), Associate Professor
620002, Russia, Yekaterinburg, Mira str., 19
E. N. Selivanov
Ural Branch of the Russian Academy Science (IMET)
Russian Federation
Russian Federation
Dr. Sci (Eng.), Director of the Institute of Metallurgy
620016, Russia, Yekaterinburg, Amundsen str., 101
R. I. Gulyaeva
Ural Branch of the Russian Academy Science (IMET)
Russian Federation
Russian Federation
Cand. Sci, Senior researcher
S. N. Tyushnyakov S.N.
Ural Branch of the Russian Academy Science (IMET)
Russian Federation
Russian Federation
Postgraduate
D. F. Rakipov
Ural Federal University (UrFU)
Russian Federation
Russian Federation
the Department of light metals metallurgy
Cand. Sci (Eng.), Associate Professor
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Review
For citations:
Belousov M.V., Selivanov E.N., Gulyaeva R.I., Tyushnyakov S.N. S.N., Rakipov D.F. Thermodynamics and kinetics of dolomite thermal dissociation. Izvestiya. Non-Ferrous Metallurgy. 2016;(2):18-25. (In Russ.) https://doi.org/10.17073/0021-3438-2016-2-18-25
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