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US 2026/0265144 A1Published application
Reducing mixer buildup of binder material through staged addition of raw materials
AssigneeUnited States Gypsum Company
InventorsGopakumar Kaladharan, James Brendan O'Sullivan, Richard Zhengjun Liu
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Abstract
A method of making a rapid setting binder composition is provided by adding the liquids and solids to a mixer and once homogeneously mixed, adding expanded perlite. This method reduces the buildup in the mixer and is more efficient than the prior art methods. Products made using the method are also provided.
Claims21
A method of making a binder composition comprising:
- feeding solids to a mixer, wherein the solids comprise reactive powder, and exclude expanded perlite (coated or uncoated), wherein the reactive powders comprise stucco, cement, and pozzolanic material,
- introducing liquids to the mixer, wherein the liquids comprise water and optional additives,
- mixing the solids and the liquids to form a homogeneous paste;
- adding expanded perlite to the homogeneous paste in the mixer,
- mixing the paste and the expanded perlite to form a slurry, the mixer having an impeller operating at a single mixing speed during the feeding, introducing, mixing to form the paste, adding, and mixing to form the slurry;
- and
- discharging the slurry.
4 more elements
17-19. (canceled)
Dependencies are inferred from the claim text.