Facts & Figures Book - KPI-JCI

ROLL CRUSHERSAPPROXIMATE TWIN AND TRIPLE ROLL CRUSHERGRADATION—OPEN CIRCUITTestSieveSizes(in.)Roll Crusher Settings1⁄4” 3⁄8” 1⁄2” 3⁄4” 1” 1 1 ⁄4” 1 1 ⁄2” 2” 2 1 ⁄2” 3” 4”6.35 9.53 12.7 19.0 25.4 31.8 38.1 50.8 63.5 76.2 102mm mm mm mm mm mm mm mm mm mm mmTestSieveSizes(mm)8” Values Shown are2036” Percent Passing152Crushin g5” 1274” 85 1023” 85 63 75.22 1 ⁄2” 85 70 50 63.52” 85 69 54 36 50.81 1 ⁄2” 85 62 50 37 26 38.11 1 ⁄4” 85 70 50 40 31 22 31.81” 85 70 52 38 31 25 17 25.43⁄4” 85 65 50 36 27 24 19 14 19.01 ⁄2” 85 60 40 29 24 20 16 14 10 12.73⁄8” 85 65 40 27 22 19 15 13 11 8 9.531 ⁄4” 85 58 41 24 19 16 14 11 9 8 5 6.35#4 61 39 26 18 15 13 11 9 7 6 4 #4#8 31 20 16 12 10 8 7 6 5 4 3 #8#16 16 12 9 7 6 5 4 3 2 2 2 #16#30 9 7 5 4 3 3 3 2 1 1 1 #30#50 6 4 3 3 2 2 2 1 0.5 0.5 0.5 #50#100 4 3 2 2 1 1 1 0.5 0 0 0 #100Gradation result may be varied to greater fines content byincreasing feed and corresponding horsepower.65