Heating – Processes of heating or heater operation – Including melting – vaporizing – sintering – expanding...
Patent
1984-03-29
1985-05-21
Camby, John J.
Heating
Processes of heating or heater operation
Including melting, vaporizing, sintering, expanding...
209 11, 432 3, 432134, F27B 1400, F27B 914, F27D 116
Patent
active
045183503
ABSTRACT:
A sand calciner system (10) includes a refractory lined drum (12) mounted for oscillation about its longitudinal axis (14). An arrangement of plows (76) are provided along the bottom inside of the drum (12) for mixing the sand received through an inlet (54) and advancing it toward a discharge outlet (56) responsive to oscillation of the drum over a predetermined arc about the axis (14). The plows (76) are arranged in staggered rows with each plow having a transverse front surface facing the inlet (54), an inclined top surface, and an angled back surface facing the outlet (56). An aerator pipe (78) is provided in conjunction with the plows (76) to fluidize the sand and thereby effect more thorough mixing and exposure to burners (58) positioned along the upper side of the drum (12) for complete calcining. A tempering section (16) and screening section (18) are preferably connected to the discharge end of the drum (12) to precool the calcined sand and then classify it for further handling and reuse in foundry cores and molds or the like.
REFERENCES:
patent: 1892271 (1932-12-01), Hart
patent: 1972868 (1934-09-01), Case
patent: 4050635 (1977-09-01), Mueller et al.
patent: 4392949 (1983-07-01), Kruyer
Brochure about Sand Source thermal reclamation system by Combustion Engineering Inc., (undated).
Portion of a brochure about a pendulum calciner by Bickley Furnaces Incorporated, May, 1982.
Drawing dated 11/11/80 about Coreco Indirect Fired Kiln from College Research Corporation.
Portion of a diagram of old multiple hearth roasting, (undated).
Jensen Paul L.
Mueller Edward E.
Camby John J.
Whirl-Air-Flow Corporation
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