Study on Optimization of Grinding Concentration of a Magnetite Ore in Liaoning
In order to explore the influence of grinding concentration on the HY wet ball mill work in-dex of a magnetite ore in Liaoning,the wet ball mill work index test is carried out.The HY wet ball mill work index under different grinding concentrations is investigated,and the grinding concentration of the HY wet ball mill work index is optimized.The results show that the open-circuit grinding test shows that the utilization coefficient of mill-0.074 mm is the highest when the grinding concentration is 75%,which is 0.672 t/(m3·h).Compared with the field,the increase is 5.99%.The utilization coefficient of-0.074 mm of the mill at the grinding concentration of 65%is only 0.038 t/(m3·h)lower than that at the concentration of 75%,which is the same as that under field conditions.According to the closed-circuit wet ball mill work index test,the wet ball mill work index is the lowest when the grinding concentration is 65%,which is 1.308(kW·h)/t lower than the wet ball mill work index before optimization,with decrease of 8.94%.When the grinding concentration is 75%,the work index of wet ball milling is only 0.207 6(kW·h)/t lower than that before optimization,with decrease of 1.42%.Combined with the open and closed circuit tests,the most suitable grinding concentration is 65%.
HY wet ball mill work indexgrinding concentrationoptimization research
万方数据
维普
