This company is decarbonizing quicklime and cement production

Quicklime – calcium oxide – is a key ingredient in steelmaking and cement. It’s also used to treat wastewater, make paper and as a soil additive in farming. But manufacturing quicklime is a CO2-intensive process. It’s made by heating crushed limestone to around 1,100˚C in a process called calcination. Traditionally, this process is powered by fossil fuels and the limestone also emits CO2. Manufacturing quicklime emits more than 400 million tonnes of CO2 every year. Swedish firm SaltX Technology wants to change that