COAL DEACTIVATION APPARATUS

摘要

The coal deactivation apparatus including: a separating device that separates out a portion of the beneficiated coal deactivated in the main treatment apparatus; a main evaluation apparatus into which the sample of the beneficiated coal separated out by the separating apparatus is supplied; a blower and heater that supply air at the evaluation temperature to the main evaluation apparatus; a temperature sensor that detects the temperature of the air that has heat-treated the sample in the main evaluation apparatus; and a control unit that, when the temperature of the air is at or below the lower limit on the basis of information from the temperature sensor, determines whether or not the temperature of the process gas is at or below the lower limit and if the process gas temperature exceeds the lower limit, controls the heater to reduce the temperature of the process gas by a prescribed value.