Utilization of Iron Ore Tailings as Raw Material for Portland Cement Clinker Production

Table 1

Chemical composition of the raw materials/wt%.

Materials	Loss	SiO2	Al2O3	Fe2O3	CaO	MgO	SO3
IOT	1.22	45.41	19.07	10.86	12.41	7.23	0.44
Clay	4.34	65.44	17.27	5.53	0.98	1.59	0.10
Limestone	42.97	0.49	0.16	0.05	55.78	0.35	0.12
Quartz sand	0.21	97.83	0.52	0.20	0.27	0.10	—
Iron ore	10.23	32.69	8.05	33.60	1.92	2.84	3.50