THERMODYNAMIC ANALYSIS OF PHASE-CHEMICAL INTERACTIONS IN THE SI – O – C SYSTEM
Abstract
The possibility of quantitative assessment of the equilibrium states in the Si – O – C system during heating of solid charge mixtures (silicon dioxide + carbon) is analyzed. The necessity of taking into account the removal of the gas phase in open reactors or vacuum units during the thermodynamic analysis during heating of solid charge mixtures is demonstrated. The expediency of introducing materials containing silicon carbide into the composition of charge mixtures for smelting silicon and high-silicon alloys is theoretically substantiated. It is shown that during smelting of silicon in arc ore-smelting furnaces, in order to achieve optimal parameters of the technological process, it is necessary that the degree of carbonaceous reducing agent on the surface of the reaction crucible reaches 80%. It was noted that in the presence of a solvent (with a decrease in the activity of silicon in silicon melts), the best indicators of the technological process (minimum energy consumption, maximum productivity of furnace units, minimum silicon losses) can be achieved at lower temperatures.
About the Authors
O.A. Polyakh
Siberian State Industrial University
Russian Federation
Russian Federation
N.F. Yakushevich
Siberian State Industrial University
Russian Federation
Russian Federation
G.V. Galevsky
Siberian State Industrial University
Russian Federation
Russian Federation
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Review
For citations:
Polyakh O., Yakushevich N., Galevsky G. THERMODYNAMIC ANALYSIS OF PHASE-CHEMICAL INTERACTIONS IN THE SI – O – C SYSTEM. Bulletin of the Siberian State Industrial University. 2014;(4):28-33. (In Russ.)
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