Abstract: A material processing apparatus includes a casing having a pyrolysis chamber for receiving and pyrolyzing feed materials therein into fluid materials and a mass of refractory material contained in the casing upon the bottom thereof and spaced from the top thereof. The refractory mass extends between the opposite ends and sides of the casing and includes an upper surface defining a bottom of the pyrolysis chamber. The upper surface is defined in an inclined orientation extending between the opposite ends of the chamber. The refractory mass has an elongated cavity extending along one end of the casing and adjacent to a lower end of the upper inclined surface. An elongated residue collection pan is disposed in the cavity and is removable through an opening in a side of the casing. Elongated heating units are disposed in the pyrolysis chamber above and generally parallel to the cavity and upper inclined surface for producing heating therein to cause pyrolyzing of the feed materials into fluid materials.