FIELD: equipment for thermal treatment of material. SUBSTANCE: apparatus has housing and at least one heat-insulated pipe mounted within housing and having mirror inner surface. Device for conveying heated gaseous medium is positioned between outer and inner walls of pipe. Pipe inner wall has perforations. Mirror plates are disposed opposite each perforation between pipe inner and outer walls. Each heating member has at least two energy emitters of different spectrum, that are arranged in succession along material under treatment process. Each energy emitter and/or part of inner mirror surface above this emitter is positioned at an angle of 1-35 deg relative to material under treatment. Pipe inner and outer walls are arranged coaxially one with respect to another. EFFECT: increased efficiency by intensified process and enhanced reliability in operation. 3 dwg
