Cost-Effective Treatment of Hemihydrate Phosphogypsum and Phosphorous Slag as Cemented Paste Backfill Material for Underground Mine

Table 1

Main chemical compositions of HPG and PS (wt.%).

Compositions	CaO	Fe2O3	Al2O3	SO3	SiO2	P2O5total	P2O5water	MgO	K2O	Na2O	Ftotal	Fwater	Others
HPG	30.21	0.08	0.29	44.89	1.02	0.85	0.38	0.29	0.05	0.26	0.49	0.14	21.05
PS	42.56	0.46	1.77	0.82	35.54	1.28	0.04	1.39	0.75	0.35	2.21	0.57	12.26