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Ore testing

In order to quantify what type of grinding circuit is best suited to the ore and the size of mills required, it is necessary to subject samples to crushing and grinding test work.

Depending on the type of milling circuit being considered, test work can range from simple determinations based on a small sample of rock or core, up to comprehensive pilot scale testing requiring hundreds of tons of whole ore.

The most commonly used tests are:

  • Bond grinding indices (rod, ball and abrasion)
  • Unconfined compressive strength
  • Impact crushing tests
  • Autogenous tumble test
  • JK drop weight test
  • Pilot scale grinding test

For further information, please contact grinding(at)outotec.com