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Obtaining homogeneous silicon in the process of alumothermic reduction of silicon dioxide

https://doi.org/10.29317/ejpfm.2019030207

Abstract

The influence of charge components on emergence of a homogeneous phase of silicon in the process of silicon dioxide reduction by aluminium has been studied. Optimal process parameters affecting the quality of the end product have been identified. These include the ratio of components of the synthetic charge (CaO, SiO2 , CaF2 ), the optimal amount of SiO2 , the optimal amount of a reducing agent (Al) and the optimal Si/slag ratio. The homogeneous phase of silicon is easily separated from the slag, which contributes to the reduction of waste silicon during further technological operations.

About the Authors

G. N. Chumikov
Silica Metals LLP
Kazakhstan


V. V. Klimenov
Silica Metals LLP
Kazakhstan


N. S. Tokmoldin
Silica Metals LLP
Kazakhstan


S. Zh. Tokmoldin
Silica Metals LLP
Kazakhstan


References

1. B.G. Gribov, K.V. Zinoviev, Izv. Vuzov. Elektronika. 3 (2008) 10. (in Russian)

2. http://www.ereport.ru/articles/commod/silicon.htm.

3. http://renen.ru/100-res-a-new-model-of-the-global-energy-system/.

4. B.G. Gribov, K.V. Zinoviev, Neorganicheskiye Materialy 39(7) (2003) 775. (in Russian)

5. V.N. Yarkin et al., Theoriya i praktika metallurgii 1(3) (2010) 114. (in Russian)

6. O. Gadalova et al., Nanoindustriya 1 (2010) 4. (in Russian)

7. K. Hesse, Erneu are Energien 7 (2006) 67. (in German)

8. A. Budzinski, Chemische Rundschau 7 (2007) 20. (in German)

9. E.S. Falkevich et al., Metallugiya (1992) 408. (in Russian)

10. E.P. Bochkaryov et al., Izv. Vuzov. Tsvet. Metallurg. 5 (1997) 20. (in Russian)

11. K. Hesse, Advance Solar-Grade Si Material (Berlin-Heidelberg,Springer-Verlag, 2009) 226 p.

12. J. Dietl et al., Solar Silicon (Heidelberg, New York: Springer-Verlag, 1981) 43 p.

13. Patent BDR N 3727647, C01 33/02 von.19.08.87

14. E. Sirtl, Future trends in solar silicon production 10 (1983) 101.

15. A. Luque, S. Megedes, Handbook of photovoltaic science and engineering(San Francisco, 2003) 1138 p.

16. I.M. Abdyukhanov, Development of foundations for production of upgraded purity metallurgical silicon for terrestrial photovoltaics 5-6 (2001) 1007. (in Russian)

17. A.F.B. Braga et al., New processes for the production of solar-grade polycrystalline silicon: A review 92 (2008) 418.

18. K. Itaka et al., Direct Carbothermic Silica Reduction from Purified Silica to Solar-Grade Silicon 596 (2015) 012015.

19. N.G. Klyuchnikov, Manual on inorganic synthesis (1965) 390. (in Russian)

20. D.D. Burdakov., General metallurgy (1971) 471. (in Russian)

21. V.M. Borshchev, Production of silicon from magnesium silicide 86 (2013) 493.

22. G.M. Serzhanov, Thermodynamic modeling of silicon recovery from the oxide using aluminium 11 (2015) 161. (in Russian)

23. S. Al-Khowaiter et al., Innovation patent No. 26252. Method of silicon purification, method of its separation from the slag, method of disintegration of lump silicon into powder and method of removing impurities from powdered silicon.

24. S.Zh. Tokmoldin, Development of solar photovoltaics in the Republic of Kazakhstan 3 (2013) 69. (in Russian)

25. M.F. Tamendarov et al., Production of high-purity metallurgical silicon(UMG) via alumothermy (2012) 182. (in Russian)

26. M.F. Tamendarov et al., Study of phosphor slags for production of solar grade silicon (2015). (in Russian)

27. N.S. Tokmoldin et al., Integration of Kazakhstani technologies of producing silicon and monosilane with world-best practices in production of solar cells and modules 3 (2017) 307. (in Russian)

28. X. Cheng et al., Effects of SiO 2 -Al 2 O 3 -CaO/FeO Low-Temperature Eutectics on Slagging Characteristics of Coal Ash 31(7) (2017) 6748.

29. F. Shahbazian et al., Experimental studies of viscosities of some CaO-CaF 2 -SiO 2 slags 26(3) (1999) 193.

30. K.C. Mills, B.J. Keene, Physicochemical properties of molten CaF 2 -based slags 26(1) (1981) 21.

31. E.M. Levin et al., Phase diagrams for Ceramists (1964) 286.


Review

For citations:


Chumikov G.N., Klimenov V.V., Tokmoldin N.S., Tokmoldin S.Zh. Obtaining homogeneous silicon in the process of alumothermic reduction of silicon dioxide. Eurasian Journal of Physics and Functional Materials. 2019;3(2):155-163. https://doi.org/10.29317/ejpfm.2019030207

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ISSN 2522-9869 (Print)
ISSN 2616-8537 (Online)