European Journal of Scientific Research - EuroJournals

Blast-Hole Cuttings: An Indicator of Drill Bit Wear in Quarries 726
Table 6: Sieve Analysis of Drill Cuttings from Blast-hole Six (Govertrag Quarry, Ado- Ekiti)
Sieve Size (µm) MeanSieve
Size (µm)
Wt
Retained(g)
%Wt
Retained%
Cum Wt
Retained(g)
Cum Wt
Passing(g)
Cum %
Retained
Cum %
Passing
850 850 128.00 32.00 400.00 0 100.00 0
-850 + 600 600 32.40 8.10 272.00 128.00 68.00 32.00
-600 + 425 425 32.08 8.02 239.60 160.40 59.90 40.10
-425 + 300 300 41.04 10.26 207.52 192.48 51.88 48.12
-300 + 212 212 47.04 11.76 166.48 233.52 41.62 58.38
-212 + 150 150 40.44 10.11 119.44 280.56 29.86 70.14
-150 + 75 75 79.00 19.75 79.00 321.00 19.75 80.25
-75 + 63 63 0 0 0 400.00 0 100.00
Table 7: Sieve Analysis of Drill Cuttings from Blast-hole Seven (Geovertrag Quarry, Ado- Ekiti)
Sieve Size (µm)
MeanSieve
Size (µm)
Wt
Retained(g)
%Wt
Retained%
Cum Wt
Retained(g)
Cum Wt
Passing(g)
Cum %
Retained
Cum %
Passing
850 850 118.40 29.60 400.00 0 100.00 0
-850 + 600 600 31.60 7.90 281.60 118.40 70.40 29.60
-600 + 425 425 31.44 7.86 250.00 150.00 62.50 37.50
-425 + 300 300 41.84 10.46 218.56 181.44 54.64 45.36
-300 + 212 212 47.32 11.83 176.72 223.28 44.18 55.82
-212 + 150 150 46.96 11.74 129.40 270.60 32.35 67.65
-150 + 75 75 82.44 20.61 82.44 317.56 20.61 79.39
-75 + 63 63 0 0 0 400.00 0 100.00
Table 8: Sieve Analysis of Drill Cuttings from Blast-hole Eight (Geovertrag Quarry,Ado- Ekiti)
Sieve Size (µm) MeanSieve
Size (µm)
Wt
Retained(g)
%Wt
Retained%
Cum Wt
Retained(g)
Cum Wt
Passing(g)
Cum %
Retained
Cum %
Passing
850 850 114.00 28.50 400.00 0 100.00 0
-850 + 600 600 30.00 7.50 286.00 114.00 71.50 28.50
-600 + 425 425 29.84 7.46 256.00 144.00 64.00 36.00
-425 + 300 300 41.04 10.26 226.16 173.84 56.54 43.46
-300 + 212 212 47.32 11.83 185.12 214.88 46.28 53.72
-212 + 150 150 50.16 12.54 137.80 262.20 34.45 65.55
-150 + 75 75 87.64 21.91 87.64 312.36 21.91 78.09
-75 + 63 63 0 0 0 400.00 0 100.00
Table 9: Sieve Analysis of Drill Cuttings from Blast-hole Nine (Geovertrag Quarry, Ado- Ekiti)
Sieve Size (µm) MeanSieve
Size (µm)
Wt
Retained(g)
%Wt
Retained%
Cum Wt
Retained(g)
Cum Wt
Passing(g)
Cum %
Retained
Cum %
Passing
850 850 113.20 28.30 400.00 0 100.00 0
-850 + 600 600 28.40 7.10 286.80 113.20 71.70 28.30
-600 + 425 425 28.64 7.16 258.40 141.60 64.64 35.40
-425 + 300 300 40.64 10.16 229.76 170.24 57.44 42.56
-300 + 212 212 48.92 12.23 189.12 210.88 47.28 52.72
-212 + 150 150 52.56 13.14 140.20 259.80 35.05 64.95
-150 + 75 75 87.64 21.91 87.64 312.36 21.91 78.09
-75 + 63 63 0 0 0 400.00 0 100.00