Germany: AUMUND Fördertechnik has launched its electrified Linear Calcination Conveyor (eLCC), which enables efficient clay calcination for limestone calcined clay cement (LC3).
LC3, composed of roughly 50% clinker, 30% calcined clay, 15% limestone and 5% gypsum, can reduce CO₂ emissions by up to 40% compared to ordinary Portland cement, according to the company. The technology enhances pozzolanic reactions between limestone and calcined clay, which provides additional alumina to form carboaluminate phases, improving strength and durability while lowering clinker use. Developed in collaboration with Holcim over four years, the eLCC was tested successfully at AUMUND’s pilot demonstration unit in Rheinberg, confirming its potential to support low-carbon cement production at industrial scale.
