Dark banner with high chrome cast grinding balls

Applications

How you grind matters as much as what you grind with. A 125 mm forged ball in a SAG mill and a 40 mm high chrome ball in a cement finish mill are both “grinding media”, but the alloy, the hardness and the wear mechanism are completely different. These pages collect the media, liner and wear part combinations we supply for the four industries that make up most of our orders.

IndustryMill typeTypical mediaTypical consumption
Gold miningSAG + ball millForged 90-125 mm, forged 40-80 mm0.6-1.5 kg/t
Copper miningSAG + ball millForged 100-150 mm, high chrome 40-80 mm0.7-1.6 kg/t
Cement plantRaw mill + cement millForged 60-90 mm, cast 20-60 mm, cylpebs100-300 g/t clinker
Power plantCoal millHigh chrome 30-60 mm, cylpebs80-250 g/t coal

Why select media by application

  • The mill type sets the impact energy: SAG and primary ball mills need toughness, finish mills need abrasion resistance
  • Ore hardness and abrasiveness decide whether a forged or a cast grade pays back
  • Pulp density and pH change the wear mechanism (abrasion vs corrosion-abrasion)
  • The liner profile and the media have to be designed as one system

If your application is not listed – zinc, lead, platinum, bauxite, limestone, slag or manufactured sand – send the ore type, mill size and current consumption and we will propose a charge. Talk to our engineers.