Single Stage : Magnetic Separation

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

1.07

1.21

1.04

30.67

17.23

11.15

97.71

62.47

34.56

Tailing 1

1.80

2.33

3.64

1.62

9.37

4.11

5.21

65.07

45.32

Tailing 2

2.13

1.46

0.32

1.59

2.83

9.96

10.09

12.32

18.41

Double Stage: Magnetic-to-Magnetic Separation

Feed₂

1.07

1.21

1.04

30.67

17.23

11.15

-

-

-

Conc₂

0.547

0.260

0.155

52.12

34.32

15.18

86.96

42.80

20.29

Tailing 1

0.254

0.490

0.849

10.71

0.790

8.57

8.30

41.86

62.75

Tailing 2

0.269

0.460

0.036

7.86

0.460

5.49

6.45

1.74

1.70