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Nc = Rotational Mill Speed, as a percentage of the Mill Critical Speed. Get Price. About - uc.cl ... Formula for Critical Speed of Ball Mill 19 Nov 2013 ...

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The "Critical Speed" for a grinding mill is defined as the rotational speed where ... This is the...

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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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Theory and Practice for Jar, Ball and Pebble Milling - US Stoneware. Most mills rotate at 60 to 65 percent of critical speed (Nc). This formulation is for wet milling ...

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