Rotary dryer, also called rotary drum dryer, is a kind of heating device, making the material reach a certain drying degree or certain moisture content. Rotary dryer machine is widely suitable for drying slag, limestone, coal powder, clayand other materials in such industries as building materials, metallurgy, chemical industry, cement, etc. This industrial dryer has the features of reasonable structure, perfect manufacturing, high yield, convenient operation, big radiating surface, low energy consumption and large heat exchange area etc.
There are downstream drying and counterflow drying methods of rotary drum dryer. Each of drying methods have their own advantages, and cannot replace their respective status. Today, we discuss the related knowledge and content of counterflow drying methods of rotary drum dryer, making people have a more comprehensive understanding of rotary drum dryer.
The conterflow drying of rotary durm dryer refers to the the wet materials from the feed enter the industrial drying machine, the combustion chamber is at the discharge end. In the process, materials and hot air move reversed, the wet materials are dried because of heat in this process. As we all know, in the early downstream drying process, the drying impetus is larger, then with the temperature increasing of materials, the temperature of drying medium will decrease, and this method is suitable for drying the materials which have not high requirement for drying degree.
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