Abstract
The dissolution rates of commercial black iron rods in iron/carbon melts under isothermal conditions were measured. The effect of melt carbon content, temperature, natural convection, and gas stirred forced convection conditions were investigated. The experimental data under natural convection conditions (no external stirring) were fitted with a dimensionless correlation for vertical cylinders: Sh = 0.13(Gr . Sc)0.34, representing mass transport control dominated by turbulent natural convection. Under bottom injection gas stirring conditions, it was found that the kinetic power input had little effect on the rod dissolution rates which were controlled by the total gas flow rate. Derived mass transport coefficients under gas stirring conditions were found to have the following dependence on the gas injection rates:k m ∝Q 0.21, wherek m = mass transport coefficient andQ = gas flow rate. A comparison of the experimental results with previously measured mass transfer coefficients under forced convection conditions gave a plume velocity flow rate dependence ofU ∝Q 0.3. A general discussion of gas stirring fluid dynamics and resulting mass transport effects is presented.
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REFERENCES
L. Von Bogdandy, K. Brotzmann, and E. Fritz:Steelmaking Pro- ceedings, 1982, vol. 65, pp. 287–95.
K. Brotzmann: Howe Memorial Lecture, AIME 70th Steelmak- ing, 46th Iron Making Conference, Pittsburgh, PA, March 30, 1987.
J. Szekely, Y.K. Chuang, and J.W. Hlinka:Metall. Trans., 1972, vol. 3, pp. 2825–33.
R.D. Pehlke, P.D. Goodell, and R.W. Dunlap:Trans. TMS-AIME, 1965, vol. 233, pp. 1420–27.
M. Kosaka and S. Minowa:Tetsu-to-Hagané, 1967, vol. 53, pp. 983–97.
R.I.L. Guthrie and P. Stubbs:Caq. Metall. Quart., 1973, vol. 12, no. 4, pp. 465–73.
Y-U. Kim and R.D. Pehlke:Metall. Trans., 1974, vol. 5, pp. 2527–32.
R.G. Olsson, V. Koump, and T.F. Perzak:Trans. TMS-AIME, 1965, vol. 233, pp. 1654–57.
R.I.L. Guthrie and L. Gourtsoyannis:Can. Metall. Quart., 1971, vol. 10, no. 1, pp. 37–47.
K. Mori and T. Sakuraya:Trans. I.S.I. Jap., 1982, vol. 22, no. 12, pp. 984–90.
M.A. Glinkov, Yu. P. Filimonov, and V.V. Yurevich:Steel in the USSR, March 1971, pp. 202−03.
T. Lehner, G. Carlsson, and T. Hsiao:Scaninject II, Int. Conf. on Injection Metallurgy, 1980, vol. 1, pp. 22-1 through 22–34.
W.J. Lavender and D.C.T. Pei:Int. J. Heat Mass Transfer, 1967, vol. 10, pp. 529–39.
N. El-Kaddah, J. Szekely, and G. Carlsson:Metall. Trans. B, 1984, vol. 15B, pp. 633–40.
J. Szekely, H.H. Grevet, and N. El-Kaddah:Int. J. Heat and Mass Transfer, 1984, vol. 27, pp. 1116–21.
Y. Sahai and R.I.L. Guthrie:Metall. Trans. B, 1982, vol. 13B, pp. 193–202.
T. Hsiao, T. Lehner, and B. Bjorn:Scand. J. Metallurgy, 1980, vol. 9, pp. 105–10.
U. Landu and C.W. Tobias: 1978 Int. Conf. on Physico-Chem- ical Hydrodynamics, Washington, DC, Nov. 6-8, 1978.
K. Nakanishi, T. Fujii, and J. Szekely:Ironmaking and Steel- making, 1975, no. 3, pp. 193−97.
O. Haidi and J.K. Brimacombe:Proc. Scaninject III, 1983, pp. 5:1−5:17.
A. Murthy and J. Szekely:Metall. Trans. B, 1986, vol. 17B, pp. 487–90.
V. Krujelskis and F. Mucciardi: Paper 1-4, PTD Conf., Chicago, IL, 1981.
G.N. Abramovich:Theory of Turbulents Jets, MIT Press, Cambridge, MA, 1963.
M. Kosaka and S. Minowa:Tetsu-to-Hagané, 1966, vol. 52, pp. 22–37.
J.M. Lommel and B. Chalmers:Trans. TMS-AIME, 1959, vol. 215, pp. 499–508.
J. Szekely and N.J. Themelis:Rate Phenomena in Process Met- allurgy, John Wiley & Sons, New York, NY, 1971, p. 457.
R.N. Barfield and J.A. Kitchener:J. Iron & Steel Inst., 1955, vol. 180, pp. 324–29.
The Making, Shaping, and Treating of Steel, E. McGannon, ed., United States Steel (USS), 1964.
J.F. Elliott, M. Gleiser, and V. Ramakrishna:Thermochemistry for Steelmaking, The American Iron and Steel Institute, Addison- Wesley Pub. Co. Inc., 1963.
M. Jakob:Heat Transfer, John Wiley & Sons, New York, NY, 1964.
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Wright, J.K. Steel dissolution in quiescent and gas stirred Fe/C melts. Metall Trans B 20, 363–374 (1989). https://doi.org/10.1007/BF02696988
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DOI: https://doi.org/10.1007/BF02696988