A material processing apparatus includes a casing having a top and bottom and a plurality of sides defining a pyrolysis chamber for receiving and pyrolyzing feed materials therein into fluid materials and a mass of refractory material disposed upon the bottom of the casing and spaced below the top thereof...http://www.google.fr/patents/US5323716?utm_source=gb-gplus-shareBrevet US5323716 - Heater and tunnel arrangement in a material processing apparatus
Heater and tunnel arrangement in a material processing apparatus
