Method and apparatus for pressurized calcination of gypsum
US7815889B2 · kind B2 · utility
6Cited by
10References
5Claims
0Family size
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Key dates
| Filing date | Feb 19, 2009 |
| Grant date | Oct 19, 2010 |
| Priority date | — |
| Expiry date | Feb 19, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27B15/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for calcining gypsum in a pressurized reactor by injecting combustion gases and air into the pressurized reactor to create a fluidized bed of gypsum, and heating the fluidized bed of gypsum in the pressurized reactor sufficiently to form a calcined hemihydrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.