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.
