Equipment for solid-liquid separation and drying of fine-powder slurry, and method therfor

A system for solid-liquid separation and drying of fine-powder slurry, comprising:

• a solid-liquid separator including a structure
• in which a pair of endless separation filter cloths is wound in a stacked state around an outer periphery of a separation roll rotated in a circumferential direction and is capable of running along the rotation direction of the separation roll, and
• in which a processing material supplied between the pair of separation filter cloths is deliquored by being sandwiched and squeezed between the pair of separation filter cloths on an outer peripheral surface of the separation roll and also by ventilation gas passing from an inside toward an outside of the separation roll through a ventilation port formed in the outer peripheral surface of the separation roll;
• and
• a horizontal rotary dryer which is installed on a subsequent stage of the solid-liquid separator, has a feed port of the processing material at one end side and a discharge port of the processing material at another end side, includes:
• a rotating shell rotatable around an axial direction;
• and a heating unit provided inside the rotating shell and having heating tubes having a heating medium flow therethrough, and heats and dries the processing material by the heating unit in a process where the processing material supplied from the feed port of the rotating shell is discharged from the discharge port,
• wherein carrier gas is made to flow in the rotating shell in a cocurrent manner in the same direction as a conveyance direction of the processing material, a bag filter is provided in a discharge flow path of the carrier gas of the horizontal rotary dryer, an exhaust hood, which is connected to the bag filter and an end portion on the other end side, discharges exhaust gas, and the exhaust hood includes a heating pipe.