The Tough Tech problem we are solving
Four billion tons of cement are produced every year — the foundation for the modern world. However, for every kilogram of cement produced, one kilogram of CO2 is released into the atmosphere, accounting for 8% of global carbon emissions. The industry must be decarbonized for a sustainable future.
About our solution
Most cement produced today is ordinary portland cement (OPC), made by cooking limestone, sand and clay in massive coal-fired kilns operating at 1450°C, a process in which half the limestone is wasted. In contrast, Sublime Cement® forgoes the energy-intensive kiln entirely with a room-temperature electrochemical process that eliminates waste and extracts critical minerals in the process. If powered by renewable energy, the process is completely carbon neutral. Sublime cement can also be whiter, more durable, and has more consistent quality than OPC. The electrochemical process can start with with abundant natural minerals or industrial waste that would otherwise be landfilled — slag from steelmaking, kiln ashes and dust, and even old demolished concrete — creating a circular economy.