View of raw cement powder in the still-glowing rotary kiln.
View of raw cement powder in the still-glowing rotary kiln.
Solar researchers at the German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt; DLR) have investigated how solar energy can replace fossil fuels for the cement production process. The initial manufacturing stage, the calcination of raw cement powder, has been successfully tested using a rotary kiln in the solar simulator at the DLR Institute of Solar Research in Cologne.
