WOOD CARBONIZING DEVICE

PURPOSE:To prevent shelf hanging phenomena of a raw material and to treat the raw material economically and efficiently, by spirally dropping the raw material along an inner wall in a furnace while forcedly rubbing and loosenting to successively carry out preheating, drying and carbonizing. CONSTITUTION:A bar chip raw material having high content is fed from an inlet 3 for raw material to a main body 1 of a cylindrical furnace, successively and spirally transported on each of semicircular grating plates 5 set alternately left and right at several stages through a revolving rake 7 along the inner wall of the furnace while rubbing and loosening. The raw material is dropped with bringing the raw material into contact with a rising hot gas flow in the whole surface and carbonized in a combustion chamber 2 to produce a carbonaceous material useful as a raw material for active carbon.