2019 16th ESCC

ESCC September 2019

16th European Symposium on Comminution & Classification

Klaas van der Wielen, Senior Metallurgist, will be attending and presenting at ESCC 2019 in Leeds, UK, between 2nd and 4th September 2019.

Simulation of the Influence of Different Modes of Selective Liberation on Metallurgical Performance

Selective liberation has often been considered the ultimate goal for grinding technologies used in the mining industry. Several technologies, such as high voltage pulse comminution, microwave-assisted breakage, the VeRo liberator and high pressure grinding rolls have been shown to liberate, at least to some degree, selectively. However, conclusively proving that selective liberation from these technologies resulted in improved metallurgical performance has often been problematic.

Rather than trying to prove that a given system yields preferential liberation of certain minerals, this study presents an assessment of what the metallurgical characteristics are of a given ‘type’ of selective liberation. Different modes of liberation are simulated under otherwise identical conditions, and results are assessed in terms of grade/recovery performance as well as deportment of particles into different size and liberation bins.