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TECHNICAL PAPERS

Metal Recovery From the Waste Magnesia-Chromia Bricks With Arc Plasmas

[+] Author and Article Information
N. Tanahashi, A. Takeuchi, K. Tanaka

Electrotechnology Applications R&D Center, Chubu Electric Power Co., Inc., Nagoya, Japan

J. Energy Resour. Technol 123(1), 76-80 (Oct 30, 2000) (5 pages) doi:10.1115/1.1346681 History: Received March 15, 2000; Revised October 30, 2000
Copyright © 2001 by ASME
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References

Kojima, T., and Yoshida, T., 1996, “Reheat Treatment Method of MgO-Cr2O3 Brick After Used in Cement Rotary Kiln,” 12th Refractory Symposium, Japan, pp. 86–96.
Winand,  R., , 1990, “Production of Magnesium by Vacuum Carbothermic Reduction of Calcined Dolomite,” Trans. Inst. Min. Mettal. Sect. C., 99, pp. 105–112.
Kubaschewski, O., and Alcock, C., 1990, Metallurgical Thermochemistry, 5th Edition, Pergamon Press, p. 268.
Itagaki, O., 1980, Standard Gibbs Energy Change, Smelting of Nonferrous Metals, JIM, Japan, pp. 315–321.
Eriksson,  G., and Hack,  K., 1990, “Chemsage—A Computer Program for the Calculation of Complex Chemical Equilibria,” Metall. Trans. B, 21, pp. 1013–1023.
Katayama,  H., and Tokuda,  M., 1979, “The Reduction Behavior of Synthetic Chromites by Carbon,” Iron Steel , 65, pp. 331–340.
Turkdogan, E., 1980, Physical Chemistry of High Temperature Technology, Academic Press, New York, NY, pp. 5–24.

Figures

Grahic Jump Location
Relationship between standard Gibbs energy of carbon reduction and temperature
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X-ray diffraction patterns of each sample after treatment
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Relationship between mass fraction of chromium transferred into iron and temperature for case (B)
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Relationship between mass fraction of magnesium gas and temperature—(A)=adding of carbon, (B)=adding of carbon and iron
Grahic Jump Location
Relationship between distribution ratio of Cr and temperature by chemical equilibrium calculation
Grahic Jump Location
Relationship between mass fraction of gas for each metal and temperature by chemical equilibrium calculation—(a) 30 mass percent carbon −70 mass percent bricks, (b) 20 mass percent carbon −47 mass percent bricks −33 mass percent iron
Grahic Jump Location
Relationship between standard Gibbs energy of carbon reduction reaction and temperature
Grahic Jump Location
Material recovery process

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