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During the grinding process, the steel rods in the rod mill are in line contact, while the steel balls in the ball grinding mill are in point contact. Ball mill VS rod mill-output size of material. The output size of the grinding …

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High temperature of the ball mill will affact the efficiency. 3 For every 1% increase in moisture, the output of the ball mill will be reduced by 8% -10%. 4 when the moisture is greater than 5%, the ball mill will be unable to perform the grinding operation. 5. The bearing of the ball mill is overheated and the motor is overloaded.

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Ask Morgardshammar for dry grinding rod mills and mills for special applications. According to formula n = 42.3/√d, where d is equal to internal shell diameter within new liners. In this case the thickness used was 60 mm for small mill sizes up to and including size 2939 and 75 mm for larger mills. Approximately 75 per cent of critical speed.

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During the grinding process, the steel rods in the rod mill are in line contact, while the steel balls in the ball grinding mill are in point contact. Ball mill VS rod mill-output size of material. The output size of the grinding material in the ball grinding mill is generally between 0.047mm-0.4mm, and that of the rod mill is between 0.833mm-0 ...

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general, the bigger the mill diameter, the lower are the mill operating and critical speeds. Thus, for larger mills the number of poles will increase. As a result, the number of poles can vary from 48 to 72 poles (Fig. 3.) with typical mill speed requirements of about 10 rpm for larger SAG mills and about 15 rpm for smaller ball mills. Figure 3.

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