Calciner reverse feed discharge spiral

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