Study on the effect of calcine temperature and additives on aluminum oxide extraction from coal gangue
煅烧温度和添加剂对提高煤矸石中氧化铝溶出率的实验研究

Coal gangue is industrial residue that is discharged when coal is excavated and washed in the production course of coal mine,and is one of industrial solid wastes with biggest discharge.Aluminum oxide(Al2O3),silicon dioxide(SiO2),carbon(C) account for more than 90% of coal gangue;so coal gangue can be used.In this paper,in order to explore the mechanism of coal gangue activation,scanning electronic microscope(SEM),infrared(IR),X-ray diffraction(XRD) measurement were used to systematically study calcined coa...