STUDY OF BREAKAGE CURVES IN ULTRAFINE BALL MILL- DRY GRINDING

P. Hari Babu, R. Bhanu Prasad

Abstract: Grinding of an ore assists in liberating minerals from the lumps of primary ore and to facilitate easier transportation / handling in the downstream operations of a hydrometallurgical plant. It is the most energy intensive operation consuming 25-30% of the total energy input to the plant and thereby bears equivalent operating cost. Aim of the present study is to study the kinetics and the breakage mechanism of different types of feed by ultrafine dry grinding. The results of this experiment shows the change in the specific rate of breakage of material with respect to different size fractions and the energy requirement for different size fractions of feed. In comparison with rotary drum ball mill this consumes more energy for dry (feed) grinding.

Keywords: Ultrafine Grinding, Breakage Curve, Size Fraction

DOI: https://doi.org/10.15623/ijret.2015.0409073