Difference between revisions of "Counter Current Dryers"
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[[File: | [[File:Counter_Current_Dryers.jpg|thumb|right|200px|Counter Current Dryers]] | ||
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. | 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=== | ===Features=== | ||
* Material is Passage through heated air | * Material is Passage through heated air | ||
* Dryer is driven through a girth gear and tyre arrangement | * Dryer is driven through a girth gear and tyre arrangement | ||
* Minimum air leakage | * Minimum air leakage | ||
===Advantages=== | ===Advantages=== | ||
* Low operating costs | * Low operating costs | ||
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* Ideally suited for high volumes | * Ideally suited for high volumes | ||
* High thermal efficiency | * High thermal efficiency | ||
'''These dryers are used to handle following material''' | '''These dryers are used to handle following material''' | ||
* Sand | * Sand | ||
* Clays | * Clays | ||
Revision as of 10:57, 30 July 2012
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