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the mill is used primarily to lift the load (medium and charge). Additional power is required to keep the mill rotating. 8.1.3 Power drawn by ball, semi-autogenous and autogenous mills A simplified picture of the mill load is shown in Figure 8.3 Ad this can be used to establish the essential features of a model for mill …

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Table 12.3.1 gives information on the size reduction of a sand-like material in a ball mill. If the values of specific rates of breakage Sj are based on 5 revolutions of the mill, determine the size distribution of the feed materials shown in Table 12.3.2 after 5 revolutions of the mill. Table 12.3.1: Results of ball mill tests. Interval (μm)

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A ball mill, a type of grinder, is a cylindrical device used in grinding (or mixing) materials like ores, chemicals, ceramic raw materials and paints.Ball mills rotate around a horizontal axis, partially filled with the material to be ground plus the grinding medium. Different materials are used as media, including ceramic balls, flint pebbles and stainless steel balls.

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