公开(公告)号：US20210002172A1

公开(公告)日：2021-01-07

申请号：US16965869

申请日：2019-01-29

Applicant: HOLCIM TECHNOLOGY LTD

Inventor： Peter KRUSPAN ,  Konrad STEMMLER ,  Ludger DAGGE ,  Melanie LANGANKE

IPC: C04B11/00 ,  C04B11/26 ,  C04B28/14 ,  B09B3/00

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.