Model:Amelunxen SGI

Amelunxen SGI Model

This is a SAG or AG mill plus ball mill model that estimates the specific energy consumption (E_SAG) using the equation by Amelunxen (2014) and the classical Bond work index equation substituting CF_ball in the place of the Rowland efficiency factors. The model requires manual calibration factor for both equations (CF_SAG and CF_ball, respectively).

Testwork Required

• SAG grindability index
• Bond ball mill work index

Formulae

$E_{SAG} = 5.9 \times SGI^{0.55} \times T_{80}^{-0.275} \times CFsag$^{Amelunxen, 2014}

$E_{ball} = W_i \times \left ( \tfrac {10}{\sqrt{ P_{80} }} - \tfrac {10}{\sqrt{ T_{80} }} \right ) \times CF_{ball}$

Pebble Crushing

The CF_sag

Phantom cyclone effect

The CF_ball