Significant technological advances made over 20 years

摘要

Crushing and grinding processes have undergone significant changes over the past 20 years, Australia-based Mineral Engineering Technical Services (Mets) director and principal consulting engineer Damian Connelly reports. These changes have mainly focused on lowering costs and increasing production and energy efficiency. "The three stages of crushing, which used to be the norm, gave way to two-stage crushing for soft oxide ores. Crushing plants also used to be dusty, with frequent maintenance requirements, which also required labour," he says.