Thermodynamic analysis of obtaining ferroalloy from silicon-aluminum-containing silica clay

Danijel' Amanov1, Viktor Shevko1, Gul'nara Karatayeva1, Galimzhan Serzhanov1
Affiliation: 
1 M. Auezov South Kazakhstan State University, 5, Tauke Khan Ave., 160012 Shymkent, Republic of Kazakhstan Loken666@mail.ru
DOI: 
https://doi.org/10.23939/chcht11.04.410
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Abstract: 
The article presents results of thermodynamic modeling of Fe-Si-Al complex containing alloy of the silica clay (77.8 % Al2O3, 11.6 % Al2O3). The modeling is based on the principle of minimum Gibbs energy and fulfilled by means of software complex HSC-5.1. It was found that the joint reduction of silicon and aluminum from an amorphous SiO2 and Al2O3 is characterized by higher thermodynamic probability than from a mixture of a crystalline SiO2 and Al2O3. At the silicon reduction there is the undesirable formation of a gaseous SiO; the transition degree of silicon in SiO can be reduced by means of decrease in temperature and increase in carbon content.
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