Process for producing geopolymers
AssigneeOutotec Oyj
InventorsEdgar Gasafi, Katja Dombrowski-Daube
Life of this patent
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Abstract
A process for producing a geopolymer includes combusting at least one of oil shale and mineral residues originating from a production of oil using the oil shale so as to produce a combustion product. The combustion product is ground. An alkaline activator is added to the combustion product to form a geopolymer mixture. Water is added to the geopolymer mixture. The geopolymer mixture is adjusted 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. The geopolymer mixture is hardened.
Claims13
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.
A geopolymer having 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, the geopolymer being produced by a process 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 so as to form a geopolymer mixture;
- adding water to the geopolymer mixture;
- and
- hardening the geopolymer mixture.
Dependencies are inferred from the claim text.