Non-fired monoliths
AssigneeKatholieke Universiteit Leuven
InventorsTobias HERTEL, Yiannis PONTIKES
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Abstract
The invention relates to methods for manufacturing an inorganic polymer object from a precursor wherein the precursor consists of one or more or comprises one or more selected from the group consisting of gibbsite-containing bauxite, gibbsite containing residue of the Bayer process, thermally processed gibbsite-containing bauxite, and thermally processed gibbsite-containing residue of the Bayer process, the method comprising the steps of alkaline-activating said precursor, mixing the precursor, shaping the mixed precursor and hydrothermally curing the shaped precursor at a temperature between 70° C. and 350° C.
Claims21
1-20. (canceled)
A method for manufacturing an inorganic polymer object from a precursor that comprises a gibbsite-containing residue or a thermally processed gibbsite-containing residue of the Bayer process, the precursor comprising less than 0.01 wt % silica fume, the method comprising:
- alkaline-activating the precursor;
- mixing the precursor;
- shaping the precursor after the mixing;
- and
- hydrothermally curing the precursor, after the shaping, at a temperature from 70° C. to 350° C. and under a pressure greater than 1 bar and less than 500 bar.
Dependencies are inferred from the claim text.