System and method for calcining gypsum
US7897134B1 · kind B1 · utility
0Cited by
3References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 7, 2009 |
| Grant date | Mar 1, 2011 |
| Priority date | — |
| Expiry date | Aug 7, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27B15/006
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A system (100) for calcining natural gypsum, synthetic gypsum (112) or a combination thereof, the system including: a mill (114) for grinding and drying natural gypsum, synthetic gypsum (112) or a combination thereof, to produce dried gypsum (116); a flash calciner (118) for calcining the dried gypsum to produce an exhaust gas (130) and calcined gypsum (128); and a mechanism (134) for transporting at least a portion of the exhaust gas (130) produced by the flash calciner (118) to an air heater (126) that supplies hot gas (126a) to the flash calciner (118).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.