Effects of Tailings Gradation on Rheological Properties of Filling Slurry

Table 1

Main chemical constituents of the tailings.

Element unit	SiO2 (wt.%)	Al2O3 (wt.%)	K2O (wt.%)	Na2O (wt.%)	CaO (wt.%)	Fe3O4 (wt.%)	MgO (wt.%)	S (wt.%)
Tailings	66.90	18.06	4.70	2.85	2.27	1.52	0.88	0.25
OPC	21.86	15.49	0.34	0.35	63.59	2.66	2.19	2.42