A carbonization apparatus for generating a carbonized material from a treatment target material, comprising: a furnace body having a cylindrical shape around a central axis and rotating about said central axis, provided with a charge port at an one end in an axis direction in parallel with said central axis, from which the treatment target material is charged, and provided with a discharge port at the other end, from which the treated treatment target material is discharged; a heating part (6, 7) for heating the treatment target material in said furnace body; and a stirring part provided on an inner surface of said furnace body, for stirring the treatment target material with rotation of said furnace body by using a plurality of stirring blades, and said stirring part is provided in a stirring area away from said discharge port in said axis direction, and said carbonization apparatus further comprises: a discharge feed part provided in a discharge feed area between said stirring area and said discharge port in said axis direction on said inner surface, for feeding the treatment target material to said discharge port with the rotation of said furnace body by using at least one feed blade (421, 423), characterized in that said at least one feed blade having a tilt angle (θ2) at a portion in contact with said inner surface with respect to said axis direction, said tilt angle (θ2) of said at least one feed blade (421, 423) being larger than that of said plurality of stirring blades, tilt angle (θ1) of stirring blades disposed in the vicinity of the charge port is not smaller than 20 degrees and not larger than 45 degrees, and tilt angle (θ2) of said at least one feed blade is larger than 45 degrees and smaller than 90 degrees. a furnace body having a cylindrical shape around a central axis and rotating about said central axis, provided with a charge port at an one end in an axis direction in parallel with said central axis, from which the treatment target material is charged, and provided with a discharge port at the other end, from which the treated treatment target material is discharged; a heating part (6, 7) for heating the treatment target material in said furnace body; and a stirring part provided on an inner surface of said furnace body, for stirring the treatment target material with rotation of said furnace body by using a plurality of stirring blades, and said stirring part is provided in a stirring area away from said discharge port in said axis direction, and said carbonization apparatus further comprises: a discharge feed part provided in a discharge feed area between said stirring area and said discharge port in said axis direction on said inner surface, for feeding the treatment target material to said discharge port with the rotation of said furnace body by using at least one feed blade (421, 423), characterized in that said at least one feed blade having a tilt angle (θ2) at a portion in contact with said inner surface with respect to said axis direction, said tilt angle (θ2) of said at least one feed blade (421, 423) being larger than that of said plurality of stirring blades, tilt angle (θ1) of stirring blades disposed in the vicinity of the charge port is not smaller than 20 degrees and not larger than 45 degrees, and tilt angle (θ2) of said at least one feed blade is larger than 45 degrees and smaller than 90 degrees. a discharge feed part provided in a discharge feed area between said stirring area and said discharge port in said axis direction on said inner surface, for feeding the treatment target material to said discharge port with the rotation of said furnace body by using at least one feed blade (421, 423), characterized in that said at least one feed blade having a tilt angle (θ2) at a portion in contact with said inner surface with respect to said axis direction, said tilt angle (θ2) of said at least one feed blade (421, 423) being larger than that of said plurality of stirring blades, tilt angle (θ1) of stirring blades disposed in the vicinity of the charge port is not smaller than 20 degrees and not larger than 45 degrees, and tilt angle (θ2) of said at least one feed blade is larger than 45 degrees and smaller than 90 degrees.