Single Stage: Air Floatation

Weight of Ore (Kg)

Assay of Nb₂O₅ (%)

% Recovery

−1400 + 355 µm

−355 + 90 µm

−90 + 45 µm

−1400 + 355 µm

−355 + 90 µm

−90 + 45 µm

−1400 + 355 µm

−355 + 90 µm

−90 + 45 µm

Feed₁

5.0

5.0

5.0

6.71

6.71

6.71

-

-

-

Conc₁

3.05

3.39

1.81

10.77

12.14

11.37

97.91

98.60

61.34

Tailing 1

1.95

1.81

3.19

8.67

10.26

10.60

50.39

49.24

41.10

Double Stage: Air Floatation to Magnetic Separation

Feed₂

3.05

3.39

1.81

10.77

12.14

11.37

-

-

-

Conc₂

0.582

0.445

0.159

54.48

35.46

17.59

96.53

38.34

13.5

Tailing 1

1.439

1.667

1.59

2.95

9.46

9.81

12.92

38.32

75.79

Tailing 2

1.02

1.278

0.061

1.16

1.09

9.60

3.60

3.38

2.85