Appliable Materials: fertilizer,non-ferrous metal,ore,construction rubbish,glass,ceramics etc. All grindable materials, various metal ores, non-metallic ores, non-flammable and explosive materials
Ball mills are giant drums that are filled to between 30 and 40% of their volume with freely moving grinding media - in this case balls.... The critical speed is the speed where, mathematically calculated, the grinding media would centrifuge out.
  (Fig. 2) Planetary ball mills are smaller than common ball mills and mainly used in laboratories for grinding sample material down to very small sizes. A planetary ball mill consists of ...
different liner designs at different mill speed but with constant filling degree (30%). Indeed, as explained previously, at a mill stop, the measurement of ball charge filling degree could be undertaken and will provide the static media charge angle (βstatic = 143 ). An online measurement of the similar angle (βdynamic), when the mill is running,
Generally, filling the mill by balls must not exceed 30–35% of its volume. Productivity of ball mills depends on drum diameter and the relation of drum diameter and length. Optimum ratio between length L and diameter D, L: D is, usually, accepted in the range 1.56–1.64.
The processing capacity of rod mill and ball mill are mainly refers to the following factors: the grind-ability of ore, feeding size and final product particle size, model and dimension of grinding mill, rotation speed of grinding mill, filling ratio of the grinding media, …
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