Furnaces for the melting of glass

Details Furnaces for the melting of glass Furnaces for the melting of glass

1981-05-27

1983-10-18

Envall, Jr., Roy N.

Industrial electric heating furnaces

Glass furnace device

Joule effect heating

373 40, 373 41, C03B 5027, C03B 526

Patent

active

044109970

ABSTRACT:
A furnace for the melting of glass in which horizontally spaced regions of the molten glass body are heated by passage of alternating electric current between diagonally opposed electrodes of two groups and supplied from a primary power supply circuit, and in an intervening zone above a withdrawal path leading to an outlet auxiliary electrodes spaced apart longitudinally of the zone are fed with current from an auxiliary supply circuit including regulators providing for adjustment of the heating effect along different parts of the zone to set up a convective effect balancing any downward pull which could draw unrefined glass or batch material into the withdrawal path.

REFERENCES:
patent: 4000360 (1976-12-01), Gell et al.
patent: 4247733 (1981-01-01), Stevenson

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