In order to increase the heat transfer area, improve the ability to burn the rotary kiln, the heat loss to improve production purposes, often in the kiln installation of heat exchange means, heat exchange means commonly used chain (commonly known as the chain) is one of them. In the wet process kiln drying belt hanging chain, is to increase the heat transfer area, to enhance heat transfer, accelerate the evaporation of water slurry. Because calcined kiln capacity is increased, the length of the kiln can be shortened, but the chain also played the role of collecting, reducing aquatint reduce material consumption, the collection efficiency can reach 60%, and some also conducive to movement of material to the kiln, broken mud rings. Wet kilns with a chain length is generally 20-30% of the total length of the kiln, wet kiln before the chain is mainly accelerated water evaporation material, sliver chain belt material temperature controlled at around 100 ° C, water 0 - 3%. Because the material has some water, so there are some into a ball rate in order to reduce the loss of flying, to prevent the chain being burned, the hot end of the flue gas temperature is not too high. In recent years, because of enhanced production requirements to further improve the ability to burn, not only from the drying effect of the chain, but also require it to play a role in some warm-up, pressing requirements to design the length of the chain belt, chain material temperature controlled heat brought out at 200 - 300 ° C, and some control in the 250-350 ° C, can not exceed 400 ° C, hot side chain with heat resistant steel. The above article by Henan YuFeng Heavy Machinery finishing release, reproduced, please indicate the source!