FIELD: manufacture of building materials; burning of brick and other ceramic articles. SUBSTANCE: annular roasting furnace includes detachable arch sections of rectangular form, smoke exhauster, gas ducts, hearth track, fuel holes with covers in sections, dampers for shutting-off end portion of sections; angular detachable arch sections are made in form of right-angled triangle whose sides are equal to outer sides of detachable rectangular arch sections. EFFECT: reduced expenses for assembly of furnace due to possibility of mounting such furnace in rectangular rooms. 1 dwg
