Combination process

Iron concentrate, mass%

%

Fe

Al2O3

SiO3

Fe recovery

Magnetic separation-Magnetic separation

67.07

1.30

2.14

92.87

Reverse flotation-Reverse flotation

55.53

2.60

15.80

87.65

Magnetic separation-Reverse flotation

67.27

1.04

2.02

89.50