Scale up and simulation of Vertimill™ pilot test operated with copper ore
- Mazzinghy, Douglas Batista
- Galéry, Roberto
- Schneider, Claudio Luiz
- Alves, Vladmir Kronemberger
DOIAbstract
AbstractVertimill™ has been used in regrind circuits during the past years due to its greater efficiency when compared to the conventional tube ball mill. This paper presents the Vertimill™ pilot grinding tests with a sample of copper ore carried out in closed circuit with a high frequency screen. The sample was crushed 100% to <6mm. All operating variables were measured under controlled conditions to produce a mass balance of the test. A laboratory batch ball mill was used to characterize the sample in order to determine the energy specific selection function and the breakage function. Previous studies have shown that the Vertimill™ produces larger values of the selection function and a constant scaling factor can be used to simulate the p...
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