Mining company Rio Tinto has teamed up with construction materials company Lafarge Canada to reuse waste from the aluminium smelting process to make cement. The circular economy initiative - designed to reduce the need to extract other raw materials and create value from waste - comes as mining companies seek ways to operate in a more sustainable manner. Lafarge unit Geocycle Canada has worked with the miner to develop a new product called Alextra, made from used potlining as part of the aluminium electrolysis process that would otherwise go to landfill.
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