公开(公告)号：US20230183132A1

公开(公告)日：2023-06-15

申请号：US17923579

申请日：2021-04-27

Applicant: FLSmidth A/S

Inventor： Rasmus Franklin Momme ,  Klaus Christian Thorslund

IPC: C04B14/12 ,  C04B14/10 ,  C04B20/06 ,  C04B28/02

CPC classification number: C04B14/12 ,  C04B14/108 ,  C04B20/068 ,  C04B28/02 ,  C04B2103/0088

Abstract: The invention relates to a method for producing a supplementary cementitious material for use in a cement product or concrete, the method comprising the steps of activating clay to the supplementary cementitious material at between 600 to 1000 degree Celsius; treating the activated supplementary cementitious material under reduced conditions to form a reduced product and cooling the reduced product to 300-400 degrees Celsius by a quenching process under oxidizing conditions.