Methods for producing solid ceramic particles using a microwave firing process
US9670401B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Aug 20, 2015 |
| Grant date | Jun 6, 2017 |
| Priority date | — |
| Expiry date | Aug 20, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2206/046
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Methods for producing solid, substantially round, spherical and sintered particles from a slurry of a raw material having an alumina content of greater than about 40 weight percent. The slurry is processed to prepare green pellets which are sintered in a furnace with microwave energy at a temperature of 1480 to 1520° C. to produce solid, substantially round, spherical and sintered particles having an average particle size greater than about 200 microns, a bulk density of greater than about 1.35 g/cm3, and an apparent specific gravity of greater than about 2.60.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.