Vitrification of asbestos waste

Details Vitrification of asbestos waste Vitrification of asbestos waste

1987-07-02

1989-04-11

Lindsay, Robert L.

Glass manufacturing

Processes

Fining or homogenizing molten glass

65 27, 65346, 501 27, 501 32, 501155, C03B 502, C03C 3087

Patent

active

048203289

ABSTRACT:
Wate asbestos is converted into a glass by maintaining within an electrical glass melting furnace a body of molten glass at a temperature above the decomposition temperature of asbestos; supplying asbestos to the furnace by a conveyor discharging above the body of molten glass so that the asbestos falls onto the molten glass and becomes decomposed and melted into glass; and withdrawing molten glass from the furnace at a temperature of at least 1000.degree. C. The asbestos is advantageously mixed with cullet and a melt accelerator and fed into the furnace by means of a screw mixer/conveyor. The furnace is advantageously operated at a pressure less than atmospheric pressure.

REFERENCES:
patent: 1069255 (1913-08-01), Herault
patent: 1394973 (1921-10-01), Crossley
patent: 3907956 (1975-09-01), Meunier
patent: 4468473 (1984-08-01), Drolet et al.
patent: 4476235 (1984-10-01), Bultel et al.
Stones and Cords in Glass Clark et al pp. 63-64 Society of Glass Technology (date unknown, vol. 190 unknown).

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