Effect of Particle Size and Sintering Temperature on the Formation of Mullite from Kyanite and Aluminum Mixtures

Table 1

Chemical composition of kyanite raw and kyanite-aluminum mix (%).

Oxides	Kyanite (K)				Kyanite + aluminum (KA)
	K0	K3	K6	K12	KA0	KA0.5	KA3	KA6	KA12
Al2O3	58.30	58.9	59.1	59.5	66.9	67.8	68.3	68.5	68.8
SiO2	38.60	38.01	38.15	37.95	30.98	29.50	29.59	29.67	28.15
Fe2O3	0.40	0.185	0.217	0.223	0.126	0.165	0.175	0.178	0.185
TiO2	1.78	1.83	1.33	1.17	1.00	0.84	0.82	0.85	0.83
Na2O	0.82	0.80	0.85	0.81	0.63	0.65	0.632	0.67	0.68
K2O	0.10	0.15	0.15	0.18	0.078	0.086	0.090	0.089	0.090
Al2O3/SiO2	1.51	1.55	1.55	1.57	2.16	2.30	2.31	2.31	2.44