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/ | 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== | |||
* 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== | |||
* Low operating costs | * Low operating costs | ||
* Low maintenance costs | * Low maintenance costs | ||
* Ideally suited for high volumes | * Ideally suited for high volumes | ||
* High thermal efficiency | * High thermal efficiency | ||
==Materials== | |||
* Sand | * Sand | ||
* Clays | * Clays | ||
Latest revision as of 00:25, 2 August 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
- 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
Materials
- Sand
- Clays
- Maize germs
- Coal
- Ore
- Industrial sludge