The SAGDesign Test or Standard Autogenous Grinding
Design Test is used throughout the world by leading Mining Organizations
to understand ore comminution hardness. It is used to determine
the pinion energy in both the SAGMill and the Ball Mill. It can
also be used in conjunction with other tests such as the JK Drop Weight
test and / or the SPI test, the Bond Rod Mill Work Index test, the Bond
Crushing Work Index Test and the Unconfined Compressive Strength test.
SAG unit power needed to grind from F80 152mm to T80 1.7mm, and the Bond
Ball Mill Work Index (Wi) on SAG ground material are measured in the
SAGDesign Test. Unit pinion energy required for SAG and Ball
milling will be calculated to the final specified D80 for the final
product from each Mill. Our reports include recommendations for
the best grinding mill power split, T80, and other pertinent information
arising from the study, particularly with regard to SAG Mill grate and
media size. The SAGDesign Test name is a trade mark of Starkey &
Associates. The test procedure is patented worldwide by Outotec
who co-sponsored the development work.


