Apparatus for the process of melting and purification of aluminu

Details Apparatus for the process of melting and purification of aluminu Apparatus for the process of melting and purification of aluminu

1997-11-17

2000-01-04

Kastler, Scott

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

266200, 266900, 266234, C21B 1110

Patent

active

060105526

ABSTRACT:
The present apparatus is comprised by two magnetic induction sets, one for melting of the raw material and the second for purification of molten metal; each set comprises a pot or crucible (1, 1'), an electromagnetic device, a filter (11) and a power supply; each crucible (1, 1') is surrounded in the lower part by a hollow permanent magnet (3, 3') in which three pairs of electromagnets facing each other are arranged; the process consists of the following stages: a) charging of metallic raw material inside a crucible (1); b) electromagnetic induction heating to melt the metallic raw material (2) inside crucible (1) through a three-phase magnetic system creating a horizontal travelling or pules magnetic field which builds a turbulent flux inside the melt (2'); c) whirling stirring of melt (2') by electromagnetic induction and purification of it via extraction of hydrogen and of non-electroconductive inclusions by coagulation of them in agglomerates; d) discharging of purified melt (2') by a magneto-hydrodynamic pump effect for the next treatment or technological actions such as the continuous or periodical casting through a filter for the mechanical filtration of the agglomerates.

REFERENCES:
patent: 3764305 (1973-10-01), Andersson
patent: 3948643 (1976-04-01), Fredriksson et al.
patent: 4512801 (1985-04-01), Shigihara et al.
patent: 4867786 (1989-09-01), Saeki et al.
patent: 5071471 (1991-12-01), Miki et al.

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