Calciner with tapered reverse feed spiral

Calcining apparatus for powdery materials

Calcining apparatus for powdery materials

Calcining system for the manufacture of cement clinker and the l

Calcining system provided with a planetary cooler

Carbon reactivation apparatus

Castable buttress for rotary kiln heat exchanger and method of f

Cement making apparatus including preheater, kiln, cooler and au

Cement manufacture

Cement producing system incorporating a waste derived fuel...

Cementitious products

Ceramic fiber block for lining high temperature furnace

Chain construction and arrangement for rotary kiln-type devices

Circumferential seal system for a rotary combustor

Clothes dryer with heat reclaimer

Coal burners, rotary furnaces incorporating the same and methods

Combustion chamber for a commercial laundry dryer

Combustion chamber having reduced NO.sub.x emissions

Combustion space with a ceramic lining such as in the combustion

Combustor drum hole shields