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Difference between revisions of "Counter Current Dryers"
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[[File:Counter-current-dryers-250x250.jpg|thumb|right|200px|Counter Current Dryer]] | |||
The '''Counter Current Dryers''' are also used effectively as combined dryer/preheaters. However, since the final product is in contact with the gas at its highest temperature the counter-current dryer is often unsuitable for heat sensitive materials. Counter current dryers are more suitable for materials that must be dried to very low levels of moisture, where the last traces of moisture are difficult to remove, or where an elevated product temperature is desirable. | |||
===Features=== | |||
* Material is Passage through heated air | |||
* Dryer is driven through a girth gear and tyre arrangement | |||
* Minimum air leakage | |||
===Advantages=== | |||
* Low operating costs | |||
* Low maintenance costs | |||
* Ideally suited for high volumes | |||
* High thermal efficiency | |||
'''These dryers are used to handle following material''' | |||
* Sand | |||
* Clays | |||
* Maize germs | |||
* Coal | |||
* Ore | |||
* Industrial sludge | |||