Conclusions
In the majority of cases the morphology and chemical composition of atomized powder particles are determined by the gas-dynamic conditions of nucleation and subsequent existence of the drops of liquid metal. The rheological characteristics of flow of the air stream past the drops of molten metal have a pronounced influence on the processes of heat and mass exchange between the particles and the surrounding atmosphere.
Similar content being viewed by others
Literature cited
Yu. A. Gratsianov, B. N. Putimtsev, and A. F. Silaev, Metal Powders from Melts [in Russian], Metallurgiya, Moscow (1970).
O. S. Nichiporenko, Yu. I. Naida, and A. B. Medvedovskii, Atomized Metal Powders [in Russian], Naukova Dumka, Kiev (1980).
V. N. Oguenko and V. S. Sokolov, “Decarburization and oxidation of iron-carbon powders during their manufacture by the method of air atomization of molten metal,” in: Powder Metallurgy [in Russian], Metallurgiya, Moscow (1981), pp. 16–19.
A. A. Kazakov, Oxygen in Liquid Steel [in Russian], Metallurgiya, Moscow (1972).
R. H. Magarvey and B. W. Taylor, “Free fall breakup of large drops,” J. Appl. Phys.,27, No. 10, 1129–1136 (1956).
B. D. Katsnel'son and F. A. Timofeeva, “Investigation of convective heat exchange between particles and stream under nonsteady-state conditions,” Tr. TsKTI,12, No. 3, 119–156 (1949).
P. K. Chang, Separation of Flow, Vol. 3, Pergamon Press, New York (1968).
V. K. Shchitnikov, “Experimental investigation of heat exchange between a sphere and a turbulent air stream” Inzh.-Fiz. Zh., No. 6, 78–83 (1961).
V. H. MacAdams, Heat Transfer [Russian translation], Metallurgizdat, Moscow (1961).
D. A. Frank-Kamenetskii, Diffusion and Heat Conduction in Chemical Kinetics [in Russian], Nauka, Moscow (1967).
L. K. Steinberger and R. E. Treybal, “Mass transfer from a solid soluble sphere to a flowing liquid stream,” Am. Inst. Chem. Eng. J.,6, No. 2, 227–232 (1960).
L. F. Bogdandi and G. Yu. Engel', Reduction of Iron Ores [in Russian], Metallurgiya, Moscow (1971).
S. K. Vig and W.-K. Lu, “Oxidation kinetics of free-falling iron droplets,” J. Iron Steel Inst.,209, No. 8, 630–636 (1971).
A. A. Kazakov, Continuous Steelmaklng Processes [in Russian], Metallurgiya, Moscow (1977).
E. R. Eckert and G. Soehngen, “Distribution of heat transfer coefficients around circular cylinder in cross flow of Reynolds number from 20 to 500,” Trans. Am. Soc. Mech. Eng.,74, No. 3, 343–347 (1961).
I. R. Cary, “The determination of local forced convection coefficients for spheres,” Trans. Am. Soc. Mech. Eng.,75, No. 4, 483–487 (1962).
C. C. Winding and A. I. Cheney, “Mass and heat transfer in tube banks,” Ind. Eng. Chem.,40, No. 6, 1087–1094 (1948).
L. A. Baker, W. A. Warner, and A. E. Jenkins, “Kinetics of decarburization of liquid iron in an oxidizing atmosphere using the levitation technique,” Trans. AIME,230, No. 6, 1228–1235 (1964).
O. A. Esin and P. V. Gel'd, Physical Chemistry of Pyrometallurgical Processes [in Russian], Vol. 2, Metallurgiya, Moscow (1966).
Author information
Authors and Affiliations
Additional information
Translated from Poroshkovaya Metallurgiya, No. 8(248), pp. 10–16, August, 1983.
Rights and permissions
About this article
Cite this article
Raspopov, N.A. Gas-dynamic characteristics of powder particle formation during air atomization of iron-carbon alloys. Powder Metall Met Ceram 22, 605–610 (1983). https://doi.org/10.1007/BF00792316
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00792316