Method for improving the rheology of calcined kaolin clay products
US5261956A · kind A · utility
24Cited by
20References
17Claims
0Family size
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Key dates
| Filing date | Oct 15, 1992 |
| Grant date | Nov 16, 1993 |
| Priority date | — |
| Expiry date | Oct 15, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B33/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for preparing a calcined kaolin clay powder having good high shear rheology in high solids aqueous slurries. A kaolin clay powder of fine particle size is calcined at a sufficient temperature and for a sufficient period to destroy the crystallinity thereof; and the calcined product is dry milled in a media mill, using a work input of from 100 to 160 hp-hr/ton of dry clay.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.