Method of adding metallic additive to molten metal of higher tem

Details Method of adding metallic additive to molten metal of higher tem Method of adding metallic additive to molten metal of higher tem

1975-09-30

1976-12-28

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75 65R, 266208, C22C 3308

Patent

active

039999840

ABSTRACT:
A method of adding a metallic additive to a molten metal having a temperature higher than the boiling point of the metallic additive comprises introduction of the metallic additive into the molten metal while the pressure within a double-walled ladle structure is adjusted to a value substantially equal to 70 to 85% of the vapor pressure evolved by the vaporization of the metallic additive. The method employs the double walled ladle structure having an adiabatic space formed between inner and outer containers which constitute the ladle structure together with a lid adapted to close the top opening of the ladle structure to enable the pressure within the ladle structure can be adjusted to the predetermined value.

REFERENCES:
patent: 2781260 (1957-02-01), Grandpierre
patent: 3896870 (1975-07-01), Massoubre

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