Method for producing a pozzolanic or latent-hydraulic cement clinker substitute

(22) 04.12.2014

(43) 20.10.2016

(57) Methods for producing pozzolanic or latent hydraulic cement clinker substitutes may involve calcining clay with a fuel comprising a mineral substance at temperatures in the range from 500 to 1250 °C., preferably from 550 to 1150 °C., most preferably from 700 to 900 °C. A resulting mixture of mineral substance from the fuel and the calcined clay forms a pozzolanic or latent hydraulic cement clinker substitute, in which a fraction of the mineral substance incorporated into the pozzolanic or latent hydraulic cement clinker substitute by the fuel is 1-60 % by weight.

(71) ThyssenKrupp Industrial Solutions AG, Essen (DE)

(73) ThyssenKrupp Industrial Solutions AG, Essen (DE)