NOVELTY - The apparatus (10) has ventilating fan (41) that outwardly discharges the exhaust-gas from rotating drum (30). An operation control panel (60) controls a motion of a motor which rotates the drum. A blade is arranged along inner peripheral wall of drum for crushing the mixture accommodated in drum. The autorotation movement of the drum is freely fallen in the downward direction from the upper direction of interior space of rotating drum, while raking mixture above interior space.    USE - Apparatus used for manufacturing solid fuel (claimed).    ADVANTAGE - Since offensive odor does not generate during production of the mixture after drying process, the countermeasure against deodorization is not required and workability is improved. The moisture content contained in combustible waste material is removed in short period of time and the solid-fuel is produced at low cost. The mixture is produced after drying process by efficient and short processing time from combustible waste material. The installation of the solid fuel manufacturing apparatus in the container for cargoes is performed easily. The waste material is utilizable as effective fuel resources, when the moisture content is removed, while including the flammable component.    DETAILED DESCRIPTION - Mixture production unit (10A) produces the mixture of the combustible waste material containing moisture content and dehydration process agent capable of promoting the removal of moisture content from combustible waste material. A load sensor is arranged at the position which supports the drum, and the control panel is used to control a motion of the motor based on the detection signal of the load sensor. A heat pump (46) heats up the external air in 20 degrees C or more and 30 degrees C or less when the temperature of the external air introduced by the inlet port is less than 20 degrees C. An INDEPENDENT CLAIM is included for a manufacturing method of the solid fuel involves drying and crushing the combustible waste material, and producing a pellet-form solid fuel. The combustible waste material is selected from a group consisting of sewage sludge, foodstuff waste material, excretion of an animal, or vegetable waste material.    DESCRIPTION OF DRAWING(S) - The drawing shows a front view of the solid fuel manufacturing apparatus.    Solid fuel manufacturing apparatus (10)    Mixture production unit (10A)    Rotating drum (30)    Ventilating fan (41)    Heat pump (46)    Operation control panel (60)