THE STUDY OF DEHYDRATION OF COLEMANITE  IN NON-ISOTHERMAL CONDITIONS

V. Bessmertnyy; M. Bondarenko; O. Puchka; A. Cherkasov; I. Izotova; V. Bragina; Y. Platov; Lyudmila Bragina

doi:10.34031/2071-7318-2021-6-3-97-106

VAK Russia 05.17.00 UDC 66 CSCSTI 61.35 Russian Library and Bibliographic Classification 35 Russian Trade and Bibliographic Classification 5541 BISAC SCI013060

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THE STUDY OF DEHYDRATION OF COLEMANITE IN NON-ISOTHERMAL CONDITIONS

Published in Bulletin of Belgorod State Technological University named after. V. G. Shukhov · Volume 6, Issue 3 · Pages 97–106 · Rubric: Chemical technology

DOI: https://doi.org/10.34031/2071-7318-2021-6-3-97-106

Received: 25.02.2021 Accepted: 25.03.2021

Authors

V. Bessmertnyy

M. Bondarenko

O. Puchka

A. Cherkasov

et al.

I. Izotova

V. Bragina

Y. Platov

Lyudmila Bragina

V. Bessmertnyy

Academic degree: doctor of technical sciences

Belgorod State Technological University named after V.G. Shukhov professor · Belgorod

Belgorod University of Cooperation, Economics and Law Belgorod

Stary Oskol Technological Institute after A. A. Ugarov, National University of Science and Technology “MISiS” branch Stary Oskol

M. Bondarenko

Belgorodskiy gosudarstvennyy tehnologicheskiy universitet im. V.G. Shuhova tehnik · kafedra Zaschita v chrezvychaynyh situaciyah · Russian Federation · Белгород

O. Puchka

Academic degree: candidate of technical sciences

Belgorod State Technological University named after V.G. Shukhov standartizacii i upravleniya kachestvom · Belgorod

A. Cherkasov

Academic degree: candidate of technical sciences

Belgorod State Technological University named after V.G. Shukhov Russian Federation · Belgorod

I. Izotova

Belgorod State Technological University named after V.G. Shukhov Belgorod

V. Bragina

Belgorod State Technological University named after V.G. Shukhov Russian Federation · Belgorod

Y. Platov

Plekhanov Russian University of Economics Russian Federation · Moscow

Lyudmila Bragina

Academic degree: doctor of technical sciences

National Technical University «Kharkov Polytechnic Institute» professor · Kharkov

ABSTRACT

The regularities of colemanite dehydration under non-isothermal conditions are investigated. It is established that colemanite, supplied to the Russian Federation from Turkey, has calcite in its composition. The chemical composition of colemanite is determined using the X-ray fluorescence analysis method. It is shown that the processes of dehydration of colemanite under non-isothermal conditions at a heating rate of 10 °С / min are accompanied by two endothermic effects at 660,7 K and 675,7 K with a total mass loss of 17,3 %. The rate of mass loss of colemanite from the temperature at heating up to 773 K, at which colemanite dehydrates and passes into the amorphous phase, is also studied. The regularities of changes in the rate of dehydration of colemanite are established. It is shown that the maximum values of the dehydration rate of colemanite are observed in the temperature range of 653–678 K. The activation energy of colemanite dehydration is determined to be 86,000 J/mol. Based on the experimentally obtained data, the rate constant of the colemanite dehydration process is calculated. The process of dehydration of colemanite is adequately described by the formal equation of kinetics. Most of the kinetic curve is adequately described by the resulting kinetic equation. It is proposed to describe the mechanism of dehydration of colemanite by a two-stage process, accompanied at the first stage by the removal of crystallization water, and at the second stage-by the removal of hydroxyl groups

KEYWORDS

colemanite, dehydration, non-isothermal conditions, activation energy, endothermic effects, kinetic equation

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GOST

Bessmertnyy V. S., Bondarenko M. A., Puchka O. V., Cherkasov A. V., Izotova I. A., Bragina V. S., Platov Y. T., Bragina L. L. THE STUDY OF DEHYDRATION OF COLEMANITE IN NON-ISOTHERMAL CONDITIONS // Bulletin of Belgorod State Technological University named after. V. G. Shukhov. 2021. no. 3. pp. 97-106. DOI: https://doi.org/10.34031/2071-7318-2021-6-3-97-106. (Date of access 23.09.2026).

MLA

V. Bessmertnyy, Bondarenko M. A., Puchka O. V., Cherkasov A. V., Izotova I. A., Bragina V. S., Platov Y. T., Bragina L. L.. "THE STUDY OF DEHYDRATION OF COLEMANITE IN NON-ISOTHERMAL CONDITIONS." Bulletin of Belgorod State Technological University named after. V. G. Shukhov 6.3 (2021): 97-106. DOI: https://doi.org/10.34031/2071-7318-2021-6-3-97-106.

APA

Bessmertnyy V. S., Bondarenko M. A., Puchka O. V., Cherkasov A. V., Izotova I. A., Bragina V. S., Platov Y. T., Bragina L. L. (2021). THE STUDY OF DEHYDRATION OF COLEMANITE IN NON-ISOTHERMAL CONDITIONS. Bulletin of Belgorod State Technological University named after. V. G. Shukhov, 6(3), 97-106. https://doi.org/10.34031/2071-7318-2021-6-3-97-106

Chicago

V. Bessmertnyy, Bondarenko M. A., Puchka O. V., Cherkasov A. V., Izotova I. A., Bragina V. S., Platov Y. T., Bragina L. L.. "THE STUDY OF DEHYDRATION OF COLEMANITE IN NON-ISOTHERMAL CONDITIONS." Bulletin of Belgorod State Technological University named after. V. G. Shukhov 6, no. 3 (2021): 97-106. https://doi.org/10.34031/2071-7318-2021-6-3-97-106.

WIKI

{{cite journal | author = Bessmertnyy V. S., Bondarenko M. A., Puchka O. V., Cherkasov A. V., Izotova I. A., Bragina V. S., Platov Y. T., Bragina L. L. | title = THE STUDY OF DEHYDRATION OF COLEMANITE IN NON-ISOTHERMAL CONDITIONS | journal = Bulletin of Belgorod State Technological University named after. V. G. Shukhov | year = 2021 | volume = 6 | issue = 3 | pages = 97-106 | doi = 10.34031/2071-7318-2021-6-3-97-106 }}

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