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US 8,523,424 B2Granted
Process for reducing the set time of a settable slurry
AssigneeBPB Limited
InventorsIan Paul Wilkes, Danny Lynham
Life of this patent
Estimating the term…
Abstract
A process for reducing the set time a plaster slurry. The process comprises the steps of, providing a pre-determined amount of water, providing a pre-determined amount of the plaster, mixing the water and the plaster together at a first time to form a slurry, and, re-directing a portion of the slurry formed at the first time to combine with slurry formed at a second time.
Claims3
A process for reducing the set time of a settable cementitous slurry, the process comprising:
- providing an amount of water;
- providing an amount of the slurry forming substance, the slurry forming substance comprising substantially calcium sulphate hemihydrate;
- mixing said amount of water and said amount of slurry forming substance together at a first time to form an aqueous slurry;
- and
- re-directing a portion of said aqueous slurry formed at said first time to combine with aqueous slurry formed at a second time, thereby reducing the set time of the cementitious slurry;
- wherein said slurry is formed by mixing said amount of water and said amount of slurry forming substance in a mixer;
- wherein the mixer comprises an input and an outlet;
- and
- wherein said portion of aqueous slurry is extracted from said outlet of said mixer and re-introduced into said outlet following a time delay.
6 more elements
Dependencies are inferred from the claim text.