Grinding Media
Minmetals currently supply forge steel grinding media to major mining groups worldwide
Minmetals Australia is now very active in growing mining grinding media market share, after a period of low focus and marketing effort in Australasia in the past few years.
Minmetals currently supply forge steel grinding media to Codelco, MMG, and other major mining groups worldwide.
Grinding media delivery formats
Minmetals Australia has the ability to deliver grinding media a number of flexible ways into Australasian mines to suit customer’s needs, drums, bulk bags or loose bulk.
Our forged steel balls are available in the following sizes: 20mm; 25mm; 30mm; 40mm; 50mm; 60mm; 80mm; 90mm; 100mm; and 125mm.
Diameter Media (Grams) | Tolerance of Diameter (mm) | Weight (Grams) | Tolerance of Weight |
20mm | +2.0 /1.0 | 39 | +/- 0.005 |
25mm | +2.0 /1.0 | 75 | +/- 0.01 |
30mm | +2.0 /1.0 | 114 | +/- 0.02 |
40mm | +2.5 /1.0 | 310 | +/- 0.04 |
50mm | +2.5 /1.0 | 600 | +/- 0.05 |
60mm | +2.5 /1.0 | 1000 | +/- 0.05 |
PHYSICAL PROPERTIES
Surface Hardness: 62 - 65 RC
Average Volume Hardness: 61 - 63 RC
Diameter Media (Grams) | Tolerance of Diameter (mm) | Weight (Grams) | Tolerance of Weight |
80mm | +3.0 /1.0 | 2104 | +246/+80 |
90mm | +3.0 /1.0 | 2996 | +310/+101 |
100mm | +3.0 /1.0 | 4110 | +381/+125 |
PHYSICAL PROPERTIES
Surface Hardness: 60 - 64 RC
Average Volume Hardness: 55 - 60 RC