Furnaces – With fuel treatment means – Preliminary refuse treatment means
Patent
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.
Dresser Industries Inc.
Envall, Jr. R. N.
Hazelwood John N.
Majesko Raymond T.
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