Control of corrosive wear in grinding balls during wet grinding of hematite ore

The reduction of wear loss of steel balls during the wet grinding of hematite ore wasachieved by using corrosion inhibitors, the optimum combination of which produced thehighest reduction rate. A binary component system consisting of Na₂SiO₃.9H₂O and NaNO₂ was developed and was found to perform well with an average wear reduction of 39% in 30 min grinding. Moreover, its use in the mill produced no adverse effect on grinding rate and pelletising.