Beneficiation of low grade graphite ore deposits ... - Ultrascientist.org

Beneficiation of low grade graphite ore deposits of Tamilnadu (India). 163Table 1. Kinetic Floatation StudySl. Floatation Wt, % Assay, Distri- Cumulative Cumu- Cumu- CumulativeNo. Product time, sec. of float % bution, weight, lative lative loss inconcentrate % % assay, % recovery recovery(R), % (100-R)1 Float – 1 0-10 11.82 65.46 51.7 11.82 65.46 51.7 48.32 Float – 2 10-20 3.98 61.63 16.4 15.80 64.50 68.1 31.93 Float – 3 20-30 1.96 54.46 7.1 17.76 63.38 75.2 24.84 Float – 4 30-40 1.81 53.14 6.4 19.57 62.44 81.6 18.45 Float – 5 40-50 0.77 39.11 2.0 20.34 61.55 83.6 16.46 Float – 6 50-60 1.10 38.99 2.9 21.44 60.40 86.5 13.57 Float – 7 60-70 0.69 30.08 1.4 22.13 59.45 87.9 12.18 Float – 8 70-80 0.60 25.96 1.0 22.73 58.57 88.9 11.19 Float – 9 80-90 0.59 20.06 0.8 23.32 57.59 89.7 10.310 Float –10 90-100 0.35 20.24 0.5 23.67 57.04 90.2 9.811 Float –11 100-110 0.42 14.00 0.4 24.09 56.29 90.6 9.412 Float –12 110-120 0.73 13.35 0.7 24.82 55.03 91.3 8.713 Float –13 120-240 5.10 3.01 1.0 29.92 46.16 92.3 7.714 Float –14 240-480 4.90 2.17 0.7 34.82 39.97 93.0 7.015 Tailing - 65.18 1.60 7.0 100.0 14.96 100.0 00100.0 100.0Table 2. Particle size distributions of float concentrate and tailingsFloat concentrate TailingsMesh size Wt, % Cumulative Wt, % Cumulative(BSS) Wt, % Wt, %+44 14.24 14.24 15.89 15.89-44+60 12.27 26.51 09.58 25.47-60+72 16.09 42.60 15.75 41.22-72+100 15.07 57.67 14.45 55.67-100+150 12.55 70.22 13.19 68.86-150+200 08.45 78.67 08.01 76.87-200 21.33 100.00 23.13 100.00