Abstract
The reduction of aluminum oxide to aluminum in radio frequency generated plasmas was studied experimentally. Argon with hydrogen, carbon dioxide, and methane were used as plasma gases. Product was collected from the reactor walls and/or cold-finger collectors. Gaseous quenching was also investigated, using hydrogen, methane, and carbon dioxide. Conversions up to 50 pct were determined using wet chemistry. Optical and X-ray methods confirmed the species present during and after reaction. The effects of particle size, flow rates, and power input were determined. Solutions of energy, momentum, and mass balances yield a qualitative explanation of the process. Vaporization rate controls.
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References
A. V. Grosse, H. W. Leutner, and C. S. Stokes: First Annual Report, Office of Naval Research, Task No. NR 052429, 1961, pp. 27-29.
C. S. Stokes, J. A. Cahill, J. J. Correa, and A. V. Grosse: Final Report, Air Force Office of Scientific Research, AFOSR-62-196,1964, pp. 19-31.
R. A. S. Brown: Paper at the CIMM, Conference of Metallurgists, Kingston, Ontario, 1967, p. 13.
G. E. Biggerstaff, W. R. Golliher, R. L. Harris, and W. R. Rossmassler: AEC R and D Report, KY-453, 1964, pp. 4-20.
P. A. Huska and C. W. Clump:I and EC Process Design and Development, 1967, vol. 6, pp. 238–44.
R. K. Rains: Ph. D. thesis, The University of Michigan, 1968, pp. 4-6, Available from University Microfilms, Ann Arbor, Mich.
M. Hoch and H. L. Johnston:J. Am. Chem. Soc., 1954, vol. 76, pp. 2560–1.
F. P. Coheur and P. Coheur:Chem. Zentr., 1944, vol. 1, p. 978.
F. P. Coheur and P. Coheur:Rev. Universelle Mines, 1943, vol. 19, pp. 86–89.
P. Coheur:Bull. Classe Sci., Acad. Roy. Belg., 1942, vol. 28, pp. 569–73.
L. Brewer and A.W. Searcy:J. Am. Chem. Soc., 1951, vol. 73, pp. 5308–14.
JANAF Thermochemical Tables, Dow Chemical Co., 1965.
R. B. Bird, W. E. Stewart, and E. N. Lightfoot:Transport Phenomena, p. 409, John Wiley & Sons, Inc., New York, 1960.
G. R. Chludzinski: Ph. D. thesis, The University of Michigan, 1964, pp. 144-52, Available from University Microfilms, Ann Arbor, Mich.
E. R. G. Eckert:J. Aero Sci., 1955, vol. 22, pp. 585–87.
I. M. Kolthoff and R. Belcher:Volumetric Analysis, vol. 3, pp. 552–54, Inter-science Publishers, Inc., New York, 1957.
K. S. Drellishak, C. F. Knopp, and A. B. Cambel: Technical Documentary Report, AEDC-TDR-63-146, 1963, pp. 119-20.
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Formerly at the University of Michigan, Ann Arbor, Mich. Arbor, Mich.
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Rains, R.K., Kadlec, R.H. The reduction of Al2O3 to aluminum in a plasma. Metall Trans 1, 1501–1506 (1970). https://doi.org/10.1007/BF02641992
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DOI: https://doi.org/10.1007/BF02641992