Method of melting vitreous materials and use of the suitable dev

Details Method of melting vitreous materials and use of the suitable dev Method of melting vitreous materials and use of the suitable dev

1982-04-06

1983-10-25

Envall, Jr., Roy N.

Industrial electric heating furnaces

Glass furnace device

Joule effect heating

C03B 5027

Patent

active

044123345

ABSTRACT:
In a method of melting vitreous materials, the thermal energy to be supplied electrically to the vitreous mass is controlled by supplying the melting plant according to supplying cycles consisting of pre-established intervals of time during which the power applied to the plant is much higher than the maximum permissible input when the plant is continuously supplied, spaced by pre-established intervals of time during which the plant is not supplied. The length of said intervals of time is equivalent to an integral number of cycles of the alternating voltage acting on the electrodes.

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patent: 3524918 (1970-08-01), Goto
patent: 3566151 (1971-02-01), Wilburn
patent: 3633095 (1972-01-01), Hood
patent: 3818112 (1974-06-01), Clishem et al.
patent: 3878358 (1975-04-01), Barton et al.
patent: 3961236 (1976-06-01), Rodek et al.
patent: 3984611 (1976-10-01), Varrasso

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