Apparatus for roasting fine grained material

Details Apparatus for roasting fine grained material Apparatus for roasting fine grained material

F - Mech Eng,Light,Heat,Weapons

27

B

39/34

F27B 7/20 (2006.01) C04B 7/44 (2006.01) F27D 13/00 (2006.01)

Patent

CA 1329479

ABSTRACT OF THE DISCLOSURE An improved apparatus for roasting fine material which includes recirculation of at least partially roasted material through the roasting furnace for further roasting. An adjustable gate is included in the recirculation system for controlling the quantity of material recirculated. A high temperature fluidizing gravity conveyor is used in the recirculation system to maintain a low profile for the system. The invention utilizing a system for classifying large particles so that they may be removed from the recirculation system. Gas locks are included for preventing the short circuiting of hot gases. The system also includes overflow conduit in the event of a plug or blockage in the system.

538702

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