Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1984-01-23
1984-12-04
Andrews, M. J.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 68R, 266235, 266901, C22B 2100
Patent
active
044862288
ABSTRACT:
An improved method of melting metal scrap in a molten melting media is disclosed. The method comprises the steps of providing a body of molten melting media in a housing having an upper portion and a lower portion, the lower portion having a generally cylindrical wall section. A supply of metal scrap is added to the housing and a supply of molten melting media is introduced to the upper portion of the housing. Melting of the metal scrap is initiated by ingesting it and molten melting media downwardly in the housing by action of an impeller positioned in the lower portion, the impeller having a flat ring member having an opening in the center thereof and having blades extending from said ring member to a substantially circular disc member. The scrap and melting media enters the opening in the ring member in an axial direction and is propelled therefrom in a radial direction by use of the blades. The impeller is positioned in the cylindrical wall section such that at least the ring member cooperates therewith to move the scrap and melting media from the upper portion through said impeller while substantially avoiding recirculation of the molten melting media within the housing to the upper portion.
REFERENCES:
patent: 3873305 (1975-03-01), Claxton et al.
patent: 3997336 (1976-12-01), van Linden et al.
patent: 4088502 (1978-05-01), LaBar
patent: 4128415 (1978-12-01), Van Linden et al.
patent: 4322245 (1982-03-01), Claxton
Alexander Andrew
Aluminum Company of America
Andrews M. J.
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