公开(公告)号：US20240067564A1

公开(公告)日：2024-02-29

申请号：US18240372

申请日：2023-08-31

申请人： CENTRAL SOUTH UNIVERSITY

发明人： Zhengqi GUO ,  Jian PAN ,  Deqing ZHU ,  Congcong YANG ,  Siwei LI ,  Qihou LI

IPC分类号： C04B18/12 ,  C04B11/26 ,  C04B20/02 ,  C04B20/04 ,  C04B28/12 ,  C04B28/14

CPC分类号： C04B18/12 ,  C04B11/26 ,  C04B20/026 ,  C04B20/04 ,  C04B28/12 ,  C04B28/14

摘要： A method for preparing a cementing material by sintering and activating coal gangue is provided. The method includes the following steps: (1) crushing coarse-grained coal gangue to predetermined particle size; (2) fully and evenly mixing the crushed coal gangue, the composite additive and water according to a set proportion, and granulating the obtained mixture; (3) distributing, igniting and exhausting the granulated pellets in the sintering machine to obtain decarburized coal gangue sinter; (4) cooling the decarburized coal gangue sinter in a cooler; (5) crushing and finely grinding the cooled coal gangue sinter to obtain a coal gangue active mixture; and (6) mixing the coal gangue active admixture, the fly ash, the quicklime and the gypsum according to a predetermined ratio, and then carrying out injection moulding, mold removal and curing to obtain the coal gangue-based cementitious material.