Ladle cover for vacuum refining process

Details Ladle cover for vacuum refining process Ladle cover for vacuum refining process

1996-07-19

1998-03-17

Kastler, Scott

Metallurgical apparatus

Means for holding or supporting work

Receptacle

266286, 432250, C21B 702

Patent

active

057283486

ABSTRACT:
Ladles used for vacuum refining processes, for example a VOD process, are provided with covers to cover openings of ladles. The covers generally consist of refractories, which are required to have excellent resistance to thermal spalling due to heat cycles and not inhibit decarbonization during refining processes of molten steel. The ladle cover comprises a refractory having a carbon content 5 wt % or more. Preferably, a refractory has a carbon content 5 wt % or more is used for a central section of the ladle cover, and a refractory having a carbon content less than 5 wt % is used for peripheral sections of the ladle cover.

REFERENCES:
patent: 1488026 (1924-03-01), Reilly
patent: 4118018 (1978-10-01), Gruner et al.
patent: 4912068 (1990-03-01), Michael et al.

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