粒级X (mm)

产率(%)

累积产率Y (%)

X'

Y'

+0.25

6.05

6.05

97.86

27.36

0.25-0.125

9.77

15.82

76.78

40.10

0.125-0.075

15.78

31.60

61.25

54.38

0.075-0.045

18.41

50.01

45.72

69.81

0.045-0.030

10.18

60.19

33.40

79.26