Patent ID: 8523998

Claim:
A process for producing a geopolymer, comprising: combusting at least one of oil shale and mineral residues so as to produce a combustion product, the at least one oil shale and mineral residues originating from a production of oil using the oil shale; grinding the combustion product; adding an alkaline activator to the combustion product to form a geopolymer mixture; adding water to the geopolymer mixture; adjusting the geopolymer mixture so as to obtain a mol ratio of Si:Al of 2 to 5, a mol ratio of K:Al of 0.6 to 0.7, a mol ratio of Si:K of 3 to 10, a mol ratio of Ca:Al of 0.1 to 0.4, and a mol ratio of Si:CA of 4.9 to 41; and hardening the geopolymer mixture.