A short announcement by South32 stating that it is reopening an old aluminium smelter in Brazil attracted attention with the news that the smelter will be powered by renewable energy only. This is significant as mining smelters use a lot of electricity to melt metal ores to produce metals. In the case of aluminium, the process basically calls for smelting alumina and bauxite concentrate at a temperature of 950°C for a few hours.
The smelter will be powered by 100% cost-efficient renewable power from a mixture of wind, solar and hydropower under long-term power contracts. Strong returns expected South32 CEO Graham Kerr says the company is excited to participate in the restart of the Alumar smelter using 100% renewable power.
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