165 ft ball mills with an effi ciency of 088 A study carried out by the author in 2004 on the Worsley Alumina Rod/Ball Circuit Line No 1, showed effi ciencies of 127 for the rod mill and 067 for the ball mill The particle size ,
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Get Pricewhere d bmax is the maximum size of feed (mm); σ is compression strength (MPa); E is modulus of elasticity (MPa); ρb is density of material of balls (kg/m 3); D is inner diameter of the mill body (m) Generally, a maximum allowed ball size is situated in the range from D /18 to D/24 The degree of filling the mill with balls also influences productivity of the mill ,
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Get PriceBall end mills are able to give a contoured profile to molds, dies, and channels Compared to regular end mills, ball end mills provide a more finished surface and may be used at higher feed rat Search , Length of Cut (decimal) 00030 (2) 00039 (5,
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