Apparatus for processing ceramics using microwave oven with resistance heating unit
US5191183A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 1991 |
| Grant date | Mar 2, 1993 |
| Priority date | — |
| Expiry date | Feb 21, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2206/046
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An apparatus for calcining and/or sintering ceramic materials comprising a kiln having a heating chamber formed from a microwave impermeable material separated from abutting secondary chambers containing conventional heating means by perforated walls, permitting convectional/radiative heat transfer from the secondary chambers into the heating chamber while minimizing leakage of microwave radiation from the heating chamber. A method for processing ceramic materials in the apparatus comprises applying convectional or convectional/radiative heat to elevate the temperature of a material to increase microwave coupling, and then applying microwave radiation to further elevate the temperature of the material and maintain a desired temperature for a desired length of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.