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US 2009/0151187 A1Published application
Device For Drying And/Or Calcining Gypsum
AssigneeLafarge Platres
InventorCharles Falinower
Life of this patent
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Abstract
A gypsum dryer/calciner includes a calcining space; a first pipe having an inlet connected to a source of hot gases and an outlet emerging in the calcining space; a second pipe having an inlet connected to a source of gypsum and an outlet emerging in the calcining space, the second pipe being concentric with the first pipe; and a force-feeding screw positioned at least partially in the second pipe, the screw carrying the gypsum along in the calcining space.
Claims18
A gypsum dryer/calciner comprising:
- a calcining space;
- a first pipe having an inlet connected to a source of hot gases and an outlet emerging in the calcining space;
- a second pipe having an inlet connected to a source of gypsum and an outlet emerging in the calcining space, the second pipe being concentric with the first pipe;
- and
- a force-feeding screw positioned at least partially in the second pipe, the screw carrying the gypsum along in the calcining space.
2 more elements
Dependencies are inferred from the claim text.