Building materials manufacturer HeidelbergCement is advancing in the development of CO2 separation technologies to help reduce its carbon emissions.

To help achieve its goals, the company is starting further development and scale-up of the Low Emissions Intensity Lime and Cement (LEILAC) technology together with Australian technology company Calix and a European consortium.

The LEILAC process makes it possible to capture high-purity CO2 from cement production via a separate exhaust gas stream and to utilise it for other purposes.

Two-thirds of CO2 emissions of a cement plant are process-related emissions generated during the heating of limestone and are therefore unavoidable.

“The LEILAC 2 project is an important element of our sustainability strategy. It shows that it is possible to significantly reduce the ecological footprint of cement production,” said Dr Dominik von Achten, Chairman of the Managing Board of HeidelbergCement.

The main goals of the LEILAC 2 project is to further scale-up the technology to an industrial level, the full process integration into an existing cement plant, and the heat supply of the plant from renewable energies for climate-neutral CO2 separation.