Calcining kettle having means for returning stack exhaust...

Details Calcining kettle having means for returning stack exhaust... Calcining kettle having means for returning stack exhaust...

C - Chemistry, Metallurgy

04

B

23/103, 39/34

C04B 11/00 (2006.01) C04B 11/028 (2006.01)

Patent

CA 1131443

APPLICATION FOR LETTERS PATENT FOR CALCINING KETTLE HAVING MEANS FOR RETURNING STACK EXHAUST GAS TO CALCINING MIXTURE ABSTRACT OF THE DISCLOSURE A calcining apparatus comprising a kettle, a heating chamber for heating the outside of the kettle, a stack for exhausting gas from the heating chamber, a duct connected at one end to the stack and having the other end extending for a limited distance into the contents of the reaction chamber of the kettle for introducing a portion of the stack gas directly into the calcining reaction mixture, and means for propelling the stack gas through the duct and into the reaction chamber of the kettle, thereby directly adding heat to the reaction mixture and accomplishing fuel conservation by recapturing and utilizing a portion of the heat from the stack gas.

357276

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