Process for the purification, modification and heating of a cast

Details Process for the purification, modification and heating of a cast Process for the purification, modification and heating of a cast

1977-03-11

1978-12-19

Rosenberg, P. D.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75 60, C21C 534

Patent

active

041304195

ABSTRACT:
A process for the treatment of a cast-iron melt with oxygen, e.g. for raising the temperature thereof or otherwise modifying the composition of the melt in which the oxygen is introduced directly into the liquid cast iron at a rate (quantity per unit time) so controlled that there is no smoke development above the melt. The control is effected by feeding oxygen into the melt at progressively increasing rates until incipient smoke formation is observed above the melt and then stepping back the oxygen feed until the smoke evolution ceases.

REFERENCES:
patent: 3321301 (1967-05-01), Bartu
patent: 3723099 (1973-03-01), Marukawa
patent: 3748122 (1973-07-01), Ramachamdra
patent: 3749567 (1973-07-01), Stephenson

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