To achieve the required throughput the SAG mill ball load was set at 15% and the pebble port size was increased to 80 mm. The mill manufacturer FFE (now FL Smidth) confirmed that the mill could be operated with a 15% charge. Table I Key process design criteria Criteria Units Stage 1 Stage 2 Stage 3 Throughput Mtpa 4.6 4.0 4.0 Throughput tph 580
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Get PriceOct 01, 1999 Consequently, the effect of larger mill sizes is to both increase operating stresses generally and to reduce the design stress criteria. For this reason, the stresses in the completed mill are generally closer to the nominated criteria at more locations in the mill than was the case in the older, smaller mills
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Get PriceOct 19, 2016 This is done by using a higher shim at the center than at the ends and tightening the foundation bolts of both ends. Ball Mill Sole Plate. This crown should be between .002″ and . 003″, per foot of length of sole plate. For example, if the sole plate is about 8′ long, the crown should be between .016″ and .024″
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Get PriceAug 02, 2013 Based on his work, this formula can be derived for ball diameter sizing and selection: Dm = 6 (log dk) * d^0.5 where D m = the diameter of the single-sized balls in mm.d = the diameter of the largest chunks of ore in the mill feed in mm
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