BULK-MATERIAL COOLING DEVICE AND BULK-MATERIAL COOLING METHOD

摘要

A bulk material cooling device (5) includes a fine grain separating part (102) and a rear-stage cooling part (103) provided downstream from the fine grain separating part (102). The fine grain separating part (102) is configured to feed cooling air (A2) flowing upward to a bed of a bulk material (90), and by the cooling air (A2), selectively separating fine grains in the bed of the bulk material (90) to an upper side of the bed. The rear-stage cooling part (103) is configured to feed cooling air (A3) to the bed of the bulk material (90), the cooling air (A3) having a flow rate per unit area less than the flow rate per unit area of the cooling air (A2) fed at the fine grain separating part (102).