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 Canada will produce on average 1 million tonnes per year of cement at its facilities in Bath, Ontario, using Alextra as an alternative to raw materials such as...