Improved pozzolan and methods of making and using same
AssigneeProgressive Planet Solutions Inc.
InventorsStephen HARPUR, Ian GRANT, Roger MAH
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Abstract
A process for producing a pozzolan from a starting material. The starting material is size-reduced and incorporated into an aqueous slurry. The size-reduction can be carried out before or after incorporation into the aqueous slurry. Pressurized gas containing carbon dioxide is supplied to the aqueous slurry, and the aqueous slurry is mixed in the presence of the pressurized gas for a treatment period.
Claims38
A process for producing a pozzolan from a starting material, comprising the steps of:
- size-reducing the starting material;
- forming an aqueous slurry containing the starting material;
- supplying pressurized gas containing carbon dioxide to the aqueous slurry;
- and
- mixing the aqueous slurry in the presence of the pressurized gas for a treatment period.
A process for producing a ground glass pozzolan from a glass starting material, wherein the amount of sodium removed from the glass starting material to produce the ground glass pozzolan is in the range of about 10% to about 25%.
A process for producing a treated pozzolan from a starting material, the process comprising chemically activating at least one alkali metal in the starting material, physically activating the at least one alkali metal in the starting material, and washing the chemically and physically activated at least one alkali metal from the starting material using water to produce the treated pozzolan.
A pozzolan comprising crushed glass having a sodium content of approximately 7.2% to approximately 9.0% by weight.
Dependencies are inferred from the claim text.