Methods for producing sintered particles from a slurry of an alumina-containing raw material
US8216675B2 · kind B2 · utility
18Cited by
137References
6Claims
0Family size
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Key dates
| Filing date | Sep 21, 2009 |
| Grant date | Jul 10, 2012 |
| Priority date | — |
| Expiry date | Apr 21, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2991
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Sintered, substantially round and spherical particles prepared from a slurry of a calcined, uncalcined or partially calcined raw material having an alumina content of more than 55% by weight, and a mullite growth promoter in an amount of from about 2 to about 10% dry weight of the total solids in the slurry. The sintered particles are suitable for use as a propping agent or as a foundry media.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.