JK Drop Weight Test

Maximise ore characteristics and increase productivity with our powerful JK Drop Weight Test – proven for nearly three decades.

The JK Drop Weight Test is an industry standard for use in characterising ore under AG/SAG milling conditions.

The JK Drop Weight Test provides ore specific comminution parameters which are used in the JKSimMet software to analyse and/or predict crusher and AG/SAG mill performance. This allows for optimisation of current circuits or flowsheet design for new circuits.

Developed at UQ’s JKMRC in 1992, the JK Drop Weight Test is a single particle breakage test across 15 size/energy combinations.

Sample Requirements: The minimum quantity of sample required to provide sufficient particles for testing is 100 kg of crushed rock in the -63+13.2 mm size range. JKTech can prepare a sample to the specified size range from a larger amount if required.

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