In the refining process, impure copper is melted in a furnace and then cast into anodes for purification through electrolysis. Monitoring the furnace using thermal imaging supports process and quality control, and provides early warning of any damage to the furnace.

Furnace heating refines the impure copper by removing any remaining sulphur and iron, as well as burning off any oxygen. Temperature monitoring ensures that this results in copper anodes of sufficient purity (about 99%) for successful electrolysis.

The data from an NIR can detect furnace issues at an early stage, allowing maintenance and safety problems to be dealt with quickly. It also ensures the copper is heated sufficiently to reach the required purity level before it is recast as an anode.

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