Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1987-08-10
1988-11-22
Rosenberg, Peter D.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 63, C22B 400, C22B 700
Patent
active
047863200
ABSTRACT:
Method and apparatus for removal of nonelectrically-conducting gaseous, liquid, and particulate contaminants from molten metal compositions by applying a force thereto. The force (commonly referred to as the Lorentz Force) exerted by simultaneous application of an electric field and a magnetic field on a molten conductor causes an increase, in the same direction as the force, in the apparent specific gravity thereof, but does not affect the nonconducting materials. This difference in apparent densities cause the nonconducting materials to "float" in the opposite direction from the Lorentz Force at a rapid rate. Means are further provided for removal of the contaminants and prevention of stirring due to rotational forces generated by the applied fields.
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patent: 3672872 (1972-06-01), Bonnier
patent: 3734720 (1973-05-01), Starck
patent: 4582531 (1986-04-01), Yoshii
Igor Kirko, "Magnetohydrodynamics of Liquid Metals", Consultants Bureau, York, 1965.
H. Branover, "Magnetohydrodynamic Flows and Turbulence: A Report on the Third Beer-Sheva Seminar", J. Fluid Mech. (1981), vol. 112, pp. 487- 497.
U. Andres, "Magnetohydrodynamic & Magnetohydrostatic Methods of Mineral Separation", John Wiley & Sons, New York.
P. Marty, "Theoretical and Experimental Aspects of Electromagnetic Separation", Institut de Mecanique de Grenoble, France.
Alexeff Igor
Hobson David O.
Sikka Vinod K.
Hamel Stephen D.
Hightower Judson R.
Rosenberg Peter D.
The United States of America as represented by the Deprtment of
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