Abstract
The effects of ball milling conditions on breakage response of Baban Tsauni (Nigeria) lead-gold ore was examined in this research work. The three factors considered were, the grinding media mass to ore sample mass ratio, the grinding time and the ball mill speed. The breakage response measured in terms of cumulative per cent mass passing the liberation size increased with increase in media mass to sample mass ratio and reached optimum at a ratio of 10:1. The response per unit time decreased as the grinding time was increased gradually from 2minutes to 10minutes, thereby indicating that long grinding circuits were poor in performance. The optimum ball milling speed of the ore was found to be 82.9% of the critical mill speed. This work established a rational approach in the choice of grinding speed. The effects of the three parameters on generation of fines were less pronounced.
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