Mineral Phases and Release Behaviors of As in the Process of Sintering Residues Containing As at High Temperature

Table 1

Chemical composition of experimental materials.

	Composition of As-containing residues (wt%)	Composition of clay (wt%)	Composition of coal ash (wt%)
SiO2	10.10	57.60	46.83
Al2O3	3.16	14.65	38.86
Fe2O3	69.78	6.59	4.66
CaO	4.97	11.47	4.65
MgO	1.95	2.32	0.49
K2O	0.52	4.23	1.08