FIELD: plasma engineering. SUBSTANCE: reactor has melting chamber with plasma generators arranged at the bottom part, outlet for gas discharging, and charging hopper for dust-like materials having conical bottom part. The through passageway is made in the side of the reactor in horizontal plane of plasma generators perpendicular to their axes. The passageway connects the internal space of the reactor with the charging hopper for dust-like materials wherein a conical piston is mounted. The piston is connected with a reciprocation mechanism through a metallic tie. The adapting conical passageway of the hopper is provided with a valve coupled with the actuator of the mechanism for overlapping the opening when conical piston moves. EFFECT: enhanced efficiency. 2 cl, 1 dwg, 1 tbl
