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    • The Effects of Processing Parameters on the Shape of Particle Size Distribution and Grinding Rate in a Stirred Mill

    Wang Guo, Keqi Guo, Zongyang Kou, Zhiyu Wang,Yaowen Xing,Xiahui Gui

    PARTICULATE SCIENCE AND TECHNOLOGY（2024）

    Cited 0|Views12
    Abstract
    The study of particle size distribution (PSD) of materials is a crucial aspect of mineral processing. It not only determines the appropriate beneficiation process and equipment but also has a significant impact on the grade and recovery of concentrate. This study utilizes a pin-stirred mill for the wet fine grinding of limonite to examine four different widths of PSD functions and compares their quantitative descriptions of the PSD. Skewness is a parameter introduced to quantitatively describe the asymmetry of the PSD. This study aims to investigate the effect of the stirrer speed, the density and the size of the grinding media on the shape of the PSD and on the grinding rate. The results show that a lower stirrer speed and a lower density of the grinding media result in a narrower and a more symmetrical PSD of the grinding products. Moreover, the time-dependent approach succeeds in simulating and proving the evolution behavior of the median particle size. It was found that the optimum mixing ratio of the grinding media can effectively adjust the shape of the PSD and improve the grinding efficiency.
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    Particle size distribution,width of particle size distribution,skewness,time-dependent function
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