Metallurgical apparatus – With control means responsive to sensed condition – With means responsive to condition of treated material
Reexamination Certificate
2005-11-16
2010-10-19
Wyszomierski, George (Department: 1793)
Metallurgical apparatus
With control means responsive to sensed condition
With means responsive to condition of treated material
C266S201000, C266S208000
Reexamination Certificate
active
07815845
ABSTRACT:
To degas a molten metal, a receptacle containing the molten metal and a layer of slag over the molten metal is positioned in a chamber, and the chamber is evacuated. As the pressure in the chamber reduces, gas is generated at the interface between the molten metal and the slag, which causes the slag to foam. To inhibit overflowing of slag from the receptacle, a gauge outputs a signal indicative of the level of the surface of the slag, and the rate of evacuation of the chamber is reduced to reduce the rate of gas generation.
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Edwards Limited
Wyszomierski George
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