Preparation, Microstructure, and Mechanical Properties of Spinel-Corundum-Sialon Composite Materials from Waste Fly Ash and Aluminum Dross

Table 1

Chemical compositions of fly ash and aluminum dross as determined by XRF analysis (mass%).

Component	Al2O3	SiO2	MgO	Fe2O3	CaO	TiO2	Na2O	K2O	SO3	Cr2O3	MnO	CuO	Others	LOI
Fly ash	40.37	52.45	0.54	2.36	0.75	1.52	0.12	0.21	0.13	—	—	—	—	1.56
Aluminum dross	69.60	5.90	7.10	4.00	2.80	1.60	2.60	0.56	0.50	0.23	0.50	0.86	3.43	0.32