Electric furnace roof

Details Electric furnace roof Electric furnace roof

1977-12-05

1979-04-24

Envall, Jr., R. N.

Furnaces

With fuel treatment means

Preliminary refuse treatment means

110335, F27D 102

Patent

active

041513622

ABSTRACT:
Electric furnace roof comprising key-arch-wedge refractory shapes contained in adjacent concentric rings within a roof band, expansion allowance means disposed between brick in both the radial and circumferential direction and spacer means disposed between brick in at least the radial direction.

REFERENCES:
patent: 3005424 (1961-10-01), Heuer
patent: 3367292 (1968-02-01), Woodruff et al.
patent: 3385241 (1968-05-01), Alvis et al.

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