公开(公告)号：WO2019150251A1

公开(公告)日：2019-08-08

申请号：PCT/IB2019/050702

申请日：2019-01-29

Applicant: HOLCIM TECHNOLOGY LTD

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

IPC: C04B11/00 ,  C04B11/02 ,  C04B11/30

CPC classification number: C04B11/30 ,  C04B11/005 ,  C04B11/02

Abstract: The method of processing plasterboards or plasterboard for recover a calcium sulphate source for producing a hydraulic binder, comprises the steps of 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.

公开(公告)号：WO2022074518A1

公开(公告)日：2022-04-14

申请号：PCT/IB2021/058987

申请日：2021-09-30

Applicant: HOLCIM TECHNOLOGY LTD

Inventor： KRUSPAN, Peter ,  BUCHER, Ernst ,  LUNK, Peter ,  WEIHRAUCH, Michael

IPC: C04B28/06 ,  C04B28/04 ,  C04B7/32 ,  C04B7/24

Abstract: A method of producing a supplementary cementitious material, comprises the steps of: - providing at least one waste material selected from quarry sludge, aggregate washing sludge and road cleaning sludge, - removing excess water from said waste material so to provide a dry waste material, - mixing the dry waste material with a source of calcium sulphate to obtain a raw material mixture, - calcining the raw material mixture at a temperature of 700-900°C to obtain the supplementary cementitious material.

公开(公告)号：WO2021124261A1

公开(公告)日：2021-06-24

申请号：PCT/IB2020/062201

申请日：2020-12-18

Applicant: HOLCIM TECHNOLOGY LTD

Inventor： WEIHRAUCH, Michael ,  BUCHER, Ernst ,  SPULER, Andreas ,  KRUSPAN, Peter ,  BLUM, Rudy

IPC: C04B7/13 ,  C04B7/24 ,  C04B7/26 ,  C04B7/28 ,  C04B28/04 ,  F27B19/00 ,  F27D17/00 ,  F27D3/08 ,  F27B14/20 ,  C04B2290/20 ,  C04B7/246 ,  F27B19/04 ,  F27B7/00 ,  F27D17/004

Abstract: A method of producing cement clinker and a second calcined material, wherein the cement clinker is produced in a first production line and the second calcined material is produced from a raw material in a second production line by carrying out the following steps: e) optionally drying the raw material in a dryer, g) calcining the optionally dried raw material in a rotary kiln to obtain the second calcined material, wherein the sensible heat of a hot gas in the first production line is used as a heat source in the calcining step g) for calcining the raw material, and wherein the rotary kiln exhaust gas coming from the calcining step g) is introduced into the first production line for the secondary combustion of the rotary kiln exhaust gas.