Method of treating molten metal

Details Method of treating molten metal Method of treating molten metal

1976-06-07

1978-01-10

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 63, 75 65R, 75 93AC, C22B 2106

Patent

active

040677311

ABSTRACT:
A method of treating molten aluminum and aluminum alloys to remove solid and gaseous impurities therefrom is disclosed. Molten metal is flowed through an integrated series of successively arranged purification stages including a deslagging stage wherein relatively large particulate impurities are removed from the molten metal by filtering the same through a woven refractory filter, a fluxing stage for removing entrapped and dissolved hydrogen from the molten metal, an adsorption stage wherein the molten metal is passed over a plurality of impurity-adsorbing refractory plates and a final filtration stage wherein the finer particulate impurities are removed by filtering the molten metal through a rigid, porous refractory filter medium.

REFERENCES:
patent: 3737304 (1973-06-01), Blayden et al.
patent: 3752662 (1973-08-01), St Cesaire
patent: 3869282 (1975-03-01), Curran et al.
patent: 3870511 (1975-03-01), Szekely
patent: 3962081 (1976-06-01), Yarwood et al.

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