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Beneficial Effect of Feeding Dry Copper Concentrate to Smelting Furnaces…
Beneficial Effect of Feeding Dry Copper Concentrate to Smelting Furnaces and Development of the Dryers
Dryer
Direct Heated Dryer
- Example: Rotary-drum dryer, Flash dryer
- Heating medium: Hot gases (from combustion of fossil fuel)
- Combustion chamber is needed
- Emission harmful gases (sulphur dioxide and carbon dioxide)
Indirect Heated Dryer
- Example: Stream dryer
- Heating medium: Stream ( from waste-heat boilers of plant)
- Additional fossil fuel and combustion chamber is not needed
- Energy required and energy loss in the off gas flow is the lowest
~ Combustion gas is not needed
~only contain water vapour and air
~ No harmful component (sulphur dioxide ad carbon dioxide)
- Low drying temperature
~ Reduce risk of fire ignition
-Smaller equipment
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