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Ball mills The ball mill is a tumbling mill that uses steel balls as the grinding media The length of the cylindrical shell is usually 1 times the shell diameter Figure The feed can be dry with less than 3% moisture to minimize ball coating or slurry containing 20 40% water by weight

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Discussion on noise source and noise reduction method of ball mill Categories Industry News Time of issue 2021 07 10 17 14

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Jan 01 1985 · The mill/ball only lines on Fig 4 indicate higher noise levels and hence higher available energies with increasing mill speed In general the noise reduction increased slowly 85 1061 J1 W LLI o 1oz z 0 e Io 75 rpm 65 A B C BALL SIZE Fig 2 Mill sound variation at 8 kHz with ball

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Factors affecting size reduction Abrasiveness Abrasiveness is a property of hard materials particularly those of mineral origin It may limit the type of machinery that can be used During the grinding of some very abrasive substances the final powder may be contaminated with more than percent of metal worn from the grinding mill

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