CEMENT MANUFACTURING DEVICE

摘要

Provided is a cement manufacturing device in which a raw material is evenly dispersed and fed into a conduit and preheated in a uniform manner in order to enhance heat exchanging efficiency and which is capable of preventing clogging etc. so as to perform a stable operation. A conduit (21) is provided between a plurality of upper side cyclones and a lower side cyclone which is disposed below the upper side cyclones. The conduit (21) circulates exhaust gas led out from the lower side cyclone upwards and distributes and guides the gas into each of the upper side cyclones. A raw material supply pipe (22) which supplies a cement raw material is connected to the conduit (21) at a position lower than a distribution portion (23). At the connection portion of the raw material supply pipe (22) to the conduit (21) a raw material guide chute (24) which receives the cement raw material supplied from the raw material supply pipe (22) and drops the raw material into the conduit (21) is provided projecting inward into the conduit (21). The upper face of the raw material guide chute (24) is formed as a flat surface and a tip (24a) thereof is telescopically slidable such that the insertion depth of the tip (24a) from the inner wall face (21b) of the conduit (21) is 0.15 0.5 times the inner diameter of the conduit (21).