Purifying Mechanism in the Acheson Process - A Thermodynamic Study

Abstract:

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To improve the purity of SiC and the yield of high purity SiC in the conventional Acheson Process, the behaviour of metal oxide impurities (Al2O3, CaO, Fe2O3 and MgO) with/without addition of sodium chloride (NaCl) is studied with the help of FactSageTM from a thermodynamic point of view. Equilibrium phases and compositions during evaporation and gas deposition are examined in the system of SiO2 + 3C. The calculation results are compared with industrial observations and published data. Purifying mechanism is clarified for the first time since the invention of the Acheson Process in 1891.

Info:

Periodical:

Materials Science Forum (Volumes 645-648)

Edited by:

Anton J. Bauer, Peter Friedrichs, Michael Krieger, Gerhard Pensl, Roland Rupp and Thomas Seyller

Pages:

41-44

DOI:

10.4028/www.scientific.net/MSF.645-648.41

Citation:

L. Y. Zhou and R. Telle, "Purifying Mechanism in the Acheson Process - A Thermodynamic Study", Materials Science Forum, Vols. 645-648, pp. 41-44, 2010

Online since:

April 2010

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$35.00

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