Analysis of the Heat Exchange Function of Sand Dryer

Dryer is an inclined rotary cylinder, raw material is feed from the cylinder high-end, the sand dryer continuous rotary motion, the material is gradually moving from high-end to low end, so sand dryer is a conveying equipment . Sand dryer is a drier used for handling a large number of materials. As for the operation reliability, operating flexibility, strong adaptability, handling large, it is widely used in building materials, metallurgy, food, chemical, coal, medicine and mining industries. Sand dryer or yellow sand dryer belongs to rotary drum dryer. Generally used for granular materials, can also be used for drying the mixed materials, sick-like paste materials and the high moisture content materials.

Sand dryer heat exchange function unlike the belt dryer: Sand dryer has heat exchange function, has a relatively uniform temperature session, the formation of the cement clinker meet the heat requirements of the various stages, in particular alite mineral production requirements. Sand dryer has a chemical reaction function. In the clinker formation process, the occurrence of a series of physical, chemical reactions, sand dryer can meet the different stages of mineral formation on the heat, temperature requirements, but also to meet their time requirements and is ideal for chemical reactor.

In the sand dryer cylinder"s inwall, there has a stiring plate, whose function is that stir the materials up and down, so that the touching surface between the raw material and airflow get large to improve the drying rate and to promote the material progress.Heat-carrying materials are generally divided into hot air, flue gas and so on. After the heat-carrying materials getting through the dryer, normally it needs to takes cyclone trap the Material inside the gas. For further reduction dustiness in the exhaust gas, the materials should get through the bag dust catcher and wet-type catcher, and then get released.

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