Electric heating – Metal heating – Of cylinders
Patent
1976-03-09
1977-08-30
Grimly, Arthur T.
Electric heating
Metal heating
Of cylinders
34 1, 34164, 219 1055B, 219 1055D, 219 1055M, H05B 906
Patent
active
040456382
ABSTRACT:
Apparatus for heat treating particulate materials in bulk form including a vibrating conveyor fed continuously with materials at one end and discharging them at the other end, the conveyor moving the materials through the apparatus with a tossing motion insuring continuous turnings and mixing thereof, the conveyor having a longitudinal trough through which the materials travel past three heating zones, the first two zones being heated by electrical resistance heaters and the third zone being microwave heated to a very high temperature, the apparatus having a cover over the zones sealed to prevent loss of heat and microwave energy, the cover and conveyor trough being lined with refractory insulation which increases in thickness through the successive zones, and the insulation having microwave reflective means embedded therein in the third zone to concentrate the microwave energy in the vicinity of the trough.
REFERENCES:
patent: 3528179 (1970-09-01), Smith
patent: 3545093 (1970-12-01), Forster
patent: 3707355 (1972-12-01), Anderson
patent: 3909574 (1975-09-01), Muller et al.
patent: 3953703 (1976-04-01), Hurwitt
Chiang Bing
Hoyte Alfred F.
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