Purifying Mechanism in the Acheson Process - A Thermodynamic Study |
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| Journal | Materials Science Forum (Volumes 645 - 648) |
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| Volume | Silicon Carbide and Related Materials 2009 |
| 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 | Li Ying Zhou et al., 2010, Materials Science Forum, 645-648, 41 |
| Online since | April, 2010 |
| Authors | Li Ying Zhou, Rainer Telle |
| Keywords | Acheson Process |
| Abstract | 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. |
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