Heating – Tumbler-type rotary - drum furnace
Patent
1992-07-06
1994-03-22
Yuen, Henry C.
Heating
Tumbler-type rotary - drum furnace
432105, 432111, F27B 1500
Patent
active
052958213
ABSTRACT:
A thermal treatment system and method characterized by an outer drum mounted on the base for rotation about a rotational axis; an inner drum mounted coaxially within the outer drum closer to a heater end thereof than an inlet end of the outer drum, the inner and outer drums forming therebetween an annular flow passage surrounding the inner drum; a passage at a heater end of the inner drum for allowing material to drop from the inner drum into the outer drum for flow through the annular flow passage from its inlet end to its outer end; material conveying structure for conveying material within a feed tube from the inlet end of the outer drum to the inner drum for deposit within the interior of the inner drum at its inlet end, the feed tube being mounted coaxially within the outer drum and being spaced radially inwardly from the annular wall of the outer drum to form an annular flow passage surrounding the feed tube that has an inlet end connected to the outlet end of the annular passage surrounding the inner drum and a cross-sectional area greater than the cross-sectional area of the annular passage surrounding the inner drum; a burner for generating and feeding hot gases into the inner drum for contacting with material fed into the inner drum by the material conveying structure thereby to thermally treat the material, the hot gases flowing through the inner drum, then through the annular passage surrounding the inner drum and then through the annular passage surrounding the feed tube; and an outlet for exhausting the hot gases and discharging thermally treated material from the outlet end of the annular passage surrounding the feed tube.
REFERENCES:
patent: 3817697 (1974-06-01), Parobek
patent: 3916807 (1975-11-01), Eiki
patent: 4427376 (1984-01-01), Etnyre et al.
patent: 4439141 (1984-03-01), Deckebach
patent: 4507081 (1985-03-01), Deve
patent: 4573417 (1986-03-01), Deve
patent: 5100314 (1992-03-01), Rierson
Sand Systems, Inc., GR Kalciner Model II (Distributed Prior to Jul. 3, 1991).
LandOfFree
Foundry sand thermal reclamation system and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Foundry sand thermal reclamation system and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Foundry sand thermal reclamation system and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-432426