Patent ID: 8337756

Claim:
A solidification processing apparatus for kneading and compacting processing-object materials containing at least thermoplastics and paper refuse or wood refuse to manufacture solid fuels, the apparatus comprising: a casing having an input port through which processing-object materials are to be inputted; a pair of rotation driving shafts which are placed in the casing and which are rotationally driven in mutually opposite directions; screw shafts which are removably fitted to the pair of rotation driving shafts, respectively, and each of which has a first screw member for sandwiching processing-object materials inputted through the input port and feeding the processing-object materials toward an end face side of the casing, a second screw member for, while preventing backflow, compacting the processing-object materials, and a third screw member for further compacting the processing-object materials and extruding the processing-object materials out of the casing; an end face plate which is removably fitted to an end face of the casing and which has discharge holes for discharging the processing-object materials extruded by the third screw member; heaters provided on the end face plate; a water injection section for performing water injection into the casing; exhaust ports formed in the casing; a blower which is connected to the exhaust port to exhaust inside of the casing; a temperature sensor for detecting a temperature of the processing-object materials processed by the screw shafts; and a control section for, based on a signal derived from the temperature sensor, controlling quantity of water injected by the water injection section, wherein outer diameters of shaft portions of the first, second and third screw members are configured in a sequentially increasing manner, and the exhaust ports are placed on widthwise both sides of the input port.