### (PDF) A quick method for bond work index approximate value

A quick method for the Bond work index approximate value determination which is based on the first order grinding kinetics is presented in this paper. and rotational speed. To correlate the

Get Price### Critical rotation speed for ballmilling ScienceDirect

How to Size a Ball Mill Design Calculator Formula. The power calculated on using equation 1 Bond 1961 Rowland and Kjos 1978 relates to 1 Rod millinga rod mill with a diameter of 244 meters inside new liners grinding wet in open circuit 2 Ball millinga ball mill with a diameter of 244 meters inside new liners grinding wet in open circuit

Get Price### Bond Index Kogelmolen BT 100 XLRETSCH

The optimum number of grinding balls is 285. However the ball diameters vary due to wear. Therefore the total ball number should be adjusted from time to time to ensure a total mass of 20.125 grams. The grinding jar of the Bond Index Ball Mill measures 12″ x 12″ and has well-rounded corners. Module Rod Mill

Get Price### Rod Millan overview ScienceDirect Topics

We characterize the rotation speed of a ball or a rod mill as the fraction φ of the critical speed N c N = φ Ν c. Bond s Table II BON 54 gives a correction coefficient for the mill s shaft energy according to the latter s type and φ. 2) Milled output with a size that is less than 70 μm

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