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Ball mill-presentations. Apr 24, 2015 Critical speed of ball mill(in rps)= R=.45/2=.225m r=25/2=12.5m Nc=.82 rpm Critical speed=1.4*operating speed Operating speed

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SAGMILLING.COM .:. Mill Critical Speed Determination The "Critical Speed" for a grinding mill is defined as the rotational speed where centrifugal forces equal ...

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ChaCha Answer: The critical speed (rpm) is given by: nC ... what is critical speed in a ball mill. ... THE critical speed N, of a ball mill is the rotational velocity ...

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