Author/Authors :
Azizi، Asghar نويسنده Department of Mining, Petroleum and Geophysics, University of , Shahrood, 36199-95161, IranShahrood Azizi, Asghar , Shafaei، Seid Ziaeddin نويسنده School of Mining Engineering, College of Engineering, University of Tehran, Iran Shafaei, Seid Ziaeddin , bagheri noaparast، mohammad zoheir نويسنده , , Karamoozian، Mohammad نويسنده Assistant Professor, Mineral Processing, Shahrood University, 6KDKURRG Iran Karamoozian, Mohammad
Abstract :
Ball mills are common grinding equipment in mineral processing industries. Ball wear results from
three mechanisms namely impact, abrasion and corrosion. Of these, the corrosion mechanism is the
least investigated, due to its chemical-electrochemical nature. Therefore, the aims of this research were
to investigate the grinding chemistry influence (slurry pH, solid percentage, water chemistry and gas
purging) on corrosive wear of steel balls and to determine the contribution of corrosion mechanism to
total wear of steel balls. The results indicated that the mass losses of steel balls could be reduced
considerably by controlling the pulp chemistry inside the mill. In addition, the results showed that
73.51% of the corrosion products are generated from the oxidation of steel balls. It was also estimated
that the corrosion mechanism accounts for 26.68% ofthe total wear of steel balls.
