Vertical type calcination kiln

摘要

A storage device (23) for storing a raw material to be calcined is provided at a position above a kiln cover (1), and the storage device (23) is connected to a preheating space (22) in such a manner as to be capable of dropwise supplying the raw material into the preheating space (22) by means of a raw material supplying pipe (26). An airtight supplying mechanism (24) is provided for dropwise supplying the raw material while the influx of air from the outside is prevented, the mechanism located between the storage device (23) and the raw-material supplying pipe (26).