Industrial electric heating furnaces – Glass furnace device – Joule effect heating
Patent
1985-05-02
1986-10-21
Envall, Jr., Roy N.
Industrial electric heating furnaces
Glass furnace device
Joule effect heating
C03B 5027
Patent
active
046189629
ABSTRACT:
Electrically energizable heating means are disclosed for supplying heat to a bottom portion of a melting furnace having a metal lined refractory vessel, wherein the heating means are in the form of electrodes or resistance heaters which are protected from the body of the melt by a shroud forming a portion of the metal liner for the refractory vessel, and such heating elements are raised above the bottom of the refractory vessel to prevent the corrosion thereof due to the heat produced by the heating units.
REFERENCES:
patent: 2119949 (1938-06-01), Blau et al.
patent: 2781411 (1967-02-01), Geffcken et al.
patent: 3109045 (1963-10-01), Silverman
patent: 4366571 (1984-06-01), Palmquist
Corning Glass Works
Envall Jr. Roy N.
Turner B. R.
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