Drying and gas or vapor contact with solids – Apparatus – For diverse operations on treated material
Patent
1998-06-22
2000-08-22
Ferensic, Denise L.
Drying and gas or vapor contact with solids
Apparatus
For diverse operations on treated material
432106, 34 92, 34134, F26B 1900
Patent
active
061052728
ABSTRACT:
A rotating vacuum kiln for heat treating solid particulate material under vacuum conditions uses a rotating refractory metal cylindrical vessel with a cool inlet zone, hot intermediate zone, and cool exit zone, with a first series of inner radiation shields provided at the hot intermediate zone adjacent to the cool inlet zone and a second series of inner radiation shields provided at the hot intermediate zone adjacent the cool exit zone to protect those two zones from the high temperatures in the hot intermediate zone. Heat for the hot intermediate zone of the cylindrical vessel is provided indirectly by electrical resistance heaters that surround the vessel and outer radiation shields are provided about the heaters to direct heat to the cylindrical vessel.
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International Search Report for PCT/US99/13972 mailed Oct. 26, 1999.
Cabot Corporation
Ferensic Denise L.
Joyce Andrea M.
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