Comparison Between Experimental and Theoretical Power Consumption of phosphogypsum Communition in a Ball Mill Felipe Claro Natarelli, Aldo Ramos Santos, Marlene Silva de Moraes, Vitor da Silva Rosa, Deovaldo de Moraes Júnior

Abstract

 Phosphogypsum is the main object in many researches and it can be used as thermal and acoustic insulation. Therefore, its granulometry is a fundamental parameter to be studied. This paper focused in quantifying the experimental energy consumption in phosphogypsum communition with a ball mill and to compare with Bond’s law energy consumption prediction. A bench-sized ball mill was used, which has 165 mm of diameter and alumina spheres with 30 mm for the phosphogypsum communition, then submitted to speeds between 45 and 105 rpm. The energy consumption was calculated from the motor torque. The results allowed verifying that Bond’s law prediction has an average error over 19% in comparison to the experimental results.