“…Although the bulk consumption of coal gangue has been achieved, which can effectively solve the storage problem of coal gangue solid waste, its utilization value is low, and it is still necessary to further explore the characteristics of coal gangue to further realize its high value-added utilization. Currently, coal gangue solid waste is being utilized in the production of molecular sieves, 20 ceramics, 21 and aluminum-based chemical raw materials. 22 Due to its high content of Al 2 O 3 and SiO 2 , coal gangue is commonly utilized as a raw material in the production of synthetic ceramics.…”