Hsustainability Gmbh

Thyssenkrupp Polysius Gmbh

Heidelberg Materials Ag

Nicolas Pato

Maciej Zajac

Jan Skocek

Eckhard Wagner

Guido Kache

Oliver Maier

Sergej Ratzlaff

A method for converting a starting material containing at least 40 wt.-% of calcium silicon (hydr)oxide phases and calcium aluminum (hydr)oxide phases into an SiO2 rich SCM and a calcium carbonate additive includes the steps: providing the starting material with a Dof ≤1 mm, mixing the starting material with water or adjusting the water content to provide a starting material slurry having a solid:liquid weight ratio from 2:1 to 1:100, passing the starting material slurry together with carbon dioxide into a gravity separation reactor, subjecting the starting material slurry and carbon dioxide to centrifugal motion inside the reactor, and removing a heavy slurry from a first outlet of the reactor, removing a light slurry of lower density particles from a second outlet of the reactor, and removing liquid at a third outlet of the reactor.

Method and device for carbonation

Growing community of inventors

Heidelberg, Germany

Nicolas Pato