DRYING METHOD FOR PARTICULATE MATERIAL AND DRYING DEVICE FOR PARTICULATE MATERIAL

摘要

Disclosed is a drying device (1) for a particulate material having a drying hopper (21) that stores a particulate material and a blower (15) and a heater (26) for the purpose of supplying heated gas to the drying hopper, the device being further equipped with: a first temperature detection sensor (44) that detects a temperature which indicates the drying process status of the particulate material within the drying hopper; a second temperature detection sensor (45) that detects the temperature of gas which has passed through the heater; and a control means (41) that stops the heater when the temperature detected by the first temperature sensor exceeds a preset first threshold value, and that stops the blower when the heater is stopped and the temperature detected by the second temperature sensor falls below a preset second threshold value, and then starts the heater and blower when a prescribed first period of time has elapsed from the stopping of the heater.