Size grade

Yield in initial sample, %

Yield after FTC, %

Yield after WDC, %

dry T +20

dry T +40

dry T +60

dry T +80

−100+50

40

29.87

28.18

27.62

28.78

22.99

−50+25

30

28.78

20.58

24.80

20.47

15.70

−25+13

30

28.82

28.54

27.26

27.01

23.82

−13+6

0

7.87

13.61

11.70

12.31

19.52

−6+0 (dust)

0

4. 7

9.09

8.61

11.44

17.97