Patent ID: 11920866
Assignee: E.T.I.A.—EVALUATION TECHNOLOGIQUE, INGENIERIE ET APPLICATIONS
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A device for subjecting a substance to heat treatment, the device comprising:
an enclosure;
a conveyor for conveying the substance between an inlet of the enclosure and an outlet of the enclosure, the conveyor comprising a screw mounted to rotate inside the enclosure about an axis of rotation and including an actuator for driving the screw in rotation about said axis, the screw itself not having a rotary shaft;
Joule effect heating of the screw;
wherein the enclosure comprises an envelope of refractory material having the screw extending therethrough, said envelope being shaped as a tube having a main inner surface following the outlines of the screw.