Aluminum Annealing
Aluminum coil annealing is a secondary process found in most aluminum mills that produce coiled sheet aluminum.
Aluminum is cast and turned into thin sheets of aluminum before being wound into coils. Several coils are placed into a batch furnace containing radiant tubes and a circulating fan.
The indirect heat provided by the radiant tubes maintains critical furnace atmosphere and provides uniform temperatures, ensure proper aluminum annealing prior to shipment or coating with zinc or other alloys.
The annealing furnace consumes a significant amount of energy and generates carbon and nitrogen oxide emissions.
The radiant tubes’ energy usage, emissions and thermal performance can be improved through the use of high surface area heat exchangers such as HeatCor™, radiant tube inserts such as SpyroCor™ and low emission devices such as NOxBuster®.
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