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ball mill reduction ratio kenya

The reduction ratio R in rod mills varies from 2 and 20 depending on the characteristics of the ore The usual reduction ratio is about 8

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    Calculate the reduction ratio of ball mill at the finest grinding with a size reduction ratio of 1281 fig 7d a 508 mm254 mm ball mix at a 1387 ratio was found to be the optimum mix this indies that the finer the product size the higher the proportion of smaller balls that is required live chat

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  • Rod Mill Design Calculations Mineral Processing

    The mill diameter low or high ratio of reduction and oversize feed factors should be applied to the calculated grinding power EF1 Dry Grinding EF2 Open Circuit Ball Milling EF3 Diameter Efficiency Factor EF4 Oversized Feed EF5 Fine Grinding in ball mills to product sizes finer than 80 passing 200 mesh 75 micrometers

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    Size reduction is achieved by impact of the balls when they drop from near the top of the shell Energy consumed in lifting the balls is utilized for grinding job When the ball mill is rotated the balls are carried by the mill wall nearly to the top Balls are released by the gravitational pull and drop to the bottom and picked up again

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    As the size reduction ratio increases the optimum ball ratio moves towards more small balls At the finest grinding with a size reduction ratio of 1281 Fig 7 d a 508 mm254 mm ball mix at a 1387 ratio was found to be the optimum mix

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    The following are factors that have been investigated and applied in conventional ball milling in order to maximize grinding efficiency a Mill Geometry and Speed – Bond 1954 observed grinding efficiency to be a function of ball mill diameter and established empirical relationships for recommended media size and mill speed that take this factor into account As well mills with different

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    Calculate the reduction ratio of ball mill at the finest grinding with a size reduction ratio of 1281 fig 7d a 508 mm254 mm ball mix at a 1387 ratio was found to be the optimum mix this indies that the finer the product size the higher the proportion of smaller balls that is required live chat

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    This indicates that the rod mill reduction ratio is much larger than those at normal condition and ball mill reduction ratio is much smaller » More detailed standard number of reduction ratio of grinding mill 150 where RRO optimum reduction ratio for the mill size 8 long and tedious and requires a standard set of grinding

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    cHammer mill to 201 Speciality crushers aRod mill bBall mill The reduction ratio is defined as the representative feed size by representative product size The sizes are usually defined as the 80 passing size of the cumulative size distribution

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    Calculate the reduction ratio of ball mill at the finest grinding with a size reduction ratio of 1281 fig 7d a 508 mm254 mm ball mix at a 1387 ratio was found to be the optimum mix this indies that the finer the product size the higher the proportion of smaller balls that is required live chat

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