JK Bond Ball Mill Test

An improved method using less mass compared to the Bond Ball Mill Work Index test.

The JK Bond Ball Mill (JKBBM) test, is a locked cycle grindability test conducted using a standard laboratory Bond Ball Mill with the same steel ball charge and material feed size (100% passing 3.35 mm) as the Bond Ball Mill Work Index test.

The test requires approximately 50% less material than the Bond Ball Mill Work Index test.

The JKBBM test can be reliably applied to samples that have previously been excluded from testing due to mass limitations.

Sample Requirements: A minimum of 5 kg of material crushed to nominally minus 10 mm is preferred. JKTech would stage crush the sample to minus 3.35 mm, as required for the Bond Ball Mill Work Index test feed.