The effect of ball size on mill performance ScienceDirect
The specific rates of breakage of particles in a tumbling ball mill are described by the equation Si axi Q z where Q z is the probability function which ranges from 1 to 0 as particle size increases. This equation produces a maximum in S and the particle size of the maximum is related to ball diameter by xm k1d2.
The Effect of Ball Size Diameter on Milling Performance
An investigation was conducted to determine the effect of the ball diameter sizes on milling operation. A laboratory size ball mill was used with ball media of sizes 10 mm 20 mm and 30 mm respectively. Quartz was the material used to perform the experiment and was arranged into 3 monosizes namely 8 mm 5.6 mm 4 mm 2.8 mm and2
Effect of Grinding Media on Milling
Effect of Ball Diameter or Rod Diameter Variation. The first relationship to be considered is the effect of the variation of the ball diameter or rod diameter upon the size distribution obtained. In Fig. 6.1 are shown typical size frequency curves obtained by ball milling these curves being deduced from the data of Coghill and Devaney.
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Effect of ball size distribution on milling rate
the exponent factors g and n describing the effect of ball size on milling rate for a South African coal. A series of batch grinding tests were carried out using three media single sizes i.e. 30
EFFECT OF BALL SIZE DISTRIBUTION ON MILLING PARAMETERS
2.4 Effect of ball size 29 2.4.1 Empirical approaches 29 2.4.2 Probabilistic approaches 33 2.5 Abnormal breakage 36 2.6 Effect of ball mixture 37 2.6.1 Ball size distribution in tumbling mills 37 2.6.2 Milling performance of a ball size distribution 40 2.7 Summary 41 Chapter 3 Experimental equipment and programme 43
Figure 2 from The Effect of Ball Size Diameter on Milling
A laboratory size ball mill was used with ball media of sizes 10 mm 20 mm and 30 mm respectively. Quartz was the material used to perform the experiment and was arranged into 3 monosizes namely 8 mm 5.6 mm 4 mm 2.8 mm and2 mm 1.4 mm for the experiment. A mill run having a mixture of the 3 ball diameter sizes was also conducted.