Crucible having a movable dross collector comprising an inductio

Details Crucible having a movable dross collector comprising an inductio Crucible having a movable dross collector comprising an inductio

1989-12-20

1991-02-26

Andrews, Melvyn J.

Metallurgical apparatus

Means for melting or vaporizing metal or treating liquefied...

By separating metal in a molten mass from undesired...

266234, 373143, F27D 1106

Patent

active

049955934

ABSTRACT:
Apparatus for pouring molten metal comprises a cold crucible 15 which has a recess adjacent its top and a pouring spout 16 positioned in the recess just below the level of the surface of the melt. The recess defines a lip above the spout which helps to ensure that there is a constant pressure head above the spout. Pivotally mounted on the lip, and biased to assume a horizontal position irrespective of the angle of tilt of the crucible is an induction coil 21. The coil induces currents in the surface of the melt and thereby moves the dross away from the pouring spout. The crucible 15 pours into a constant head hopper 22 and the opening and closing of the crucible pouring spout 16 and the angle of tilt of the crucible are controlled to ensure constant pressure head in the hopper.

REFERENCES:
patent: 3297311 (1967-01-01), Stenkvist et al.

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