Effect of temperature on products of calcium phosphate interaction with carbon in the presence of silica: Thermodynamic simulation

Effect of temperature on products of calcium phosphate interaction with carbon in the presence of... Effect of temperature on processes occurring in carbothermic reduction of phosphorus from mixtures and melts based on calcium phosphate with silica was studied. The process was thermodynamically simulated using the software package Astra. Data on parameters of the equilibrium state of the system in the temperature range 1400–2300 K were obtained. At temperatures higher than 1773 K, the reduction of phosphorus is accompanied by a silicon-reduction process. Above 2000 K, the yield of SiO becomes comparable with that of phosphorus. The optimal temperature range for performing the process used to obtain phosphorus is 1623–1773 K. For this condition to be satisfied, it is necessary to preclude appearance of an electric arc in furnace aggregates. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Applied Chemistry Springer Journals

Effect of temperature on products of calcium phosphate interaction with carbon in the presence of silica: Thermodynamic simulation

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Publisher
Springer Journals
Copyright
Copyright © 2014 by Pleiades Publishing, Ltd.
Subject
Chemistry; Chemistry/Food Science, general; Industrial Chemistry/Chemical Engineering
ISSN
1070-4272
eISSN
1608-3296
D.O.I.
10.1134/S107042721406056
Publisher site
See Article on Publisher Site

Abstract

Effect of temperature on processes occurring in carbothermic reduction of phosphorus from mixtures and melts based on calcium phosphate with silica was studied. The process was thermodynamically simulated using the software package Astra. Data on parameters of the equilibrium state of the system in the temperature range 1400–2300 K were obtained. At temperatures higher than 1773 K, the reduction of phosphorus is accompanied by a silicon-reduction process. Above 2000 K, the yield of SiO becomes comparable with that of phosphorus. The optimal temperature range for performing the process used to obtain phosphorus is 1623–1773 K. For this condition to be satisfied, it is necessary to preclude appearance of an electric arc in furnace aggregates.

Journal

Russian Journal of Applied ChemistrySpringer Journals

Published: Sep 13, 2014

References

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