Electric heating – Metal heating – Of cylinders
Patent
1979-04-09
1981-03-17
Grimley, Arthur T.
Electric heating
Metal heating
Of cylinders
34 1, 219 1055A, 219 1055D, H05B 680
Patent
active
042569443
ABSTRACT:
An apparatus and method for thawing particulate material, such as coal, stored in gondola-type containers, such as rail cars, wherein the container is positioned in a shielded and grounded enclosure, and is engaged by a shielded hood having an open face matching the dimensions of the open face of the container to form a microwave cavity between the hood and the container. Plural magnetrons are located in the hood, and are energized upon formation of the microwave cavity, to emit microwave radiation into the material in the container, whereby the material is heated and thawing thereof takes place. Prior to formation of the microwave cavity, the top surface of the container open face is thoroughly cleaned, and during energization of the magnetrons, gases released by the particular matter being heated are evacuated from the microwave cavity. After energization of the magnetron for a selected period of time, the shielding hood is removed from the gondola-type container, and the container is then processed to an adjacent discharge cite exterior to the RF shielded enclosure. The apparatus and process is virtually entirely automated under the control of a centrally located microprocessor.
REFERENCES:
patent: 2500752 (1950-03-01), Hanson et al.
patent: 3505490 (1970-04-01), Gorn
patent: 3560347 (1971-02-01), Knapp et al.
patent: 3569657 (1971-03-01), Levinson
patent: 3601448 (1971-08-01), Stone
patent: 3800858 (1974-04-01), Placek
patent: 3992287 (1976-11-01), Rhys
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