Method of processing plasterboards
OwnerPeter KRUSPAN, Konrad STEMMLER +2inventors
InventorsPeter KRUSPAN, Konrad STEMMLER, Ludger DAGGE, Melanie LANGANKE
Life of this patent
Estimating the term…
Abstract
A method of processing plasterboards or plasterboard for recover a calcium sulphate source for producing a hydraulic binder, includes comminuting plasterboards or a gypsum fraction thereof so as to obtain plasterboard particles and, thereafter, subjecting the plasterboard particles to a heat treatment at an elevated temperature so as to volatilize and/or decompose organic components present in the plasterboard particles.
Claims20
A method of processing plasterboards for recovering a calcium sulphate source for producing a hydraulic binder, comprising the steps of
- a) comminuting plasterboards or a gypsum fraction thereof so as to obtain plasterboard particles,
- b) subjecting the plasterboard particles to a heat treatment at an elevated temperature so as to volatilize and/or decompose organic components present in the plasterboard particles, wherein the heat treatment is carried out for a time period of less than 10 min.
(canceled)
Dependencies are inferred from the claim text.