SYNTHESIS OF HYDRATED CARBOALUMINATES OF ALKALI-EARTH METALS FROM NATURAL MG-CONTAINING RAW MATERIAL IN ALUMINA PRODUCTION
https://doi.org/10.17073/0021-3438-2016-6-21-28
Abstract
The article presents the results of studying the synthesis kinetics of hydrated magnesium carboaluminates and determines the key role of preceding thermal activation of a raw magnesium component and temperature in the process rate. The study covers the mechanism and conditions of co-crystallization of hydrated calcium and magnesium carboaluminates from the pre-activated natural Mg-containing raw material. It is found that the hexagonal structures of synthesized substances exhibit high regenerative ability. The paper offers a process and instrumentation diagram for synthesizing hydrated carboaluminates of alkali-earth metals in alumina production.
About the Authors
V. M. Sizyakov
Saint Petersburg Mining University
Russian Federation
Dr. Sci. (Tech.), Professor of Metallurgy Department
Russian Federation
Dr. Sci. (Tech.), Professor of Metallurgy Department
E. V. Tikhonova
JSC «Pikalevo Sodium»
Russian Federation
Cand. Sci. (Tech.), Research Engineer
Russian Federation
Cand. Sci. (Tech.), Research Engineer
E. V. Sizyakova
Saint Petersburg Mining University
Russian Federation
Cand. Sci. (Tech.), Associate Professor of Metallurgy Department
Russian Federation
Cand. Sci. (Tech.), Associate Professor of Metallurgy Department
M. V. Cherkasova
Saint Petersburg Mining University
Russian Federation
Post-graduate Student of Metallurgy Department
Russian Federation
Post-graduate Student of Metallurgy Department
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Review
For citations:
Sizyakov V.M., Tikhonova E.V., Sizyakova E.V., Cherkasova M.V. SYNTHESIS OF HYDRATED CARBOALUMINATES OF ALKALI-EARTH METALS FROM NATURAL MG-CONTAINING RAW MATERIAL IN ALUMINA PRODUCTION. Izvestiya. Non-Ferrous Metallurgy. 2016;(6):21-28. (In Russ.) https://doi.org/10.17073/0021-3438-2016-6-21-28
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