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how to find ball mill retention time in case of iron ore pdf

how to find ball mill retention time in case of iron ore pdf

Ball Millan overview ScienceDirect Topics.Ball millstumbleironor steel balls with theore. The balls are initially 5–10 cm diameter but gradually wear away as grinding of theoreproceeds. The feed toball mills(dry basis) is typically 75 vol.-%oreand 25% steel. Theball mill…

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