Aug 03 1999 critical rotation speed of dry ballmill was studied by experiments and by numerical simulation using discrete element method dem the results carried out by both methods showed good agreement it has been commonly accepted that the critical rotation speed is a function of a ball radius and a jar diameter the results of the present work
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Get PriceBall mill 12 and the theoretical critical speed of a ball mill is the speed at which the get price superorion ball mill christian berner as is thus activated ie the balls are lifted and then impact back against the bed ball mills are usually operated at 75 of the critical speed the critical speed
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Get PriceCritical speed of ball mill formula derivation ball mill critical speed derivation ball mills mine engineercom ball mill critical speed derivation if the peripheral speed of the mill is too great it begins to act like a centrifuge and the balls do not fall back but stay on the perimeter of the mill the point where the mill becomes a centrifuge is called the critical speed and dragthe second
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Get PriceHow to optimise the speed of the ball millfaqs for instance a 90cm diameter ball mill with a critical speed of 44 rpm has an optimal speed of 31 to 33
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Get PriceThe critical speed is used for the determination of ball mill ideal operating speed but for comparison rod mills would operate between 50 to 95 of the critical speed the faster the mill speed the greater the wear on the rods and
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