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May 28 2018 In a ball mill steel or stone balls are mixed with the ore and during rotation of the drum the ore is ground by friction and compression into a suitable fineness for the next step in the process The main component of all mills is a rotating drum turning with a suitable speed gearbox and motor.

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May 08 2017 Thus the power to drive the whole mill = 49.5 66.0 = 115.5 h.p = 86 kW From the published data the measured power to the motor terminals is 103 kW and so the power demand of 86 kW by the mill leads to a combined efficiency of motor and transmission of 83 which is reasonable.

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Sep 01 2016 Abstract The lack of constraints in ball mill capacity in the published ball mill models may result in unrealistic predictions of mill throughput This paper presents an overfilling indicator for wet overflow discharge ball mills The overfilling indicator is based on the slurry residence time in a given mill and given operational conditions.

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The most important work in the ball mill sizing IMHO is sizing based on the orebodies feeding it taking into consideration the entire mine plan desired throughput and giving yourself a bit of extra breathing room in case there s a slump in prices new production capacity or synergies created and you want to ramp up production.

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This is dumped to the ground the SAG throughput increased by 48 Mill consistent with survey #2 exhibiting a finer SAG mill product smaller throughput with a pebble crusher running would have been between 631 transfer size to the ball milling circuit than survey #1 See Figure 6 and 935 dmtph for the feed size distribution achieved by

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Jun 19 2015 The basic parameters used in ball mill design power calculations rod mill or any tumbling mill sizing are material to be ground characteristics Bond Work Index bulk density specific density desired mill tonnage capacity DTPH operating solids or pulp density feed size as F80 and maximum chunk size product size as P80 and maximum and finally the type of circuit open/closed

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89 August 2011 Perth WA Fig 1 Increase in throughput over liner life for a large SAG mill Unfortunately however the 32 ft SAG mill that was studi ed for this project does not feature

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Maximising SAG mill throughput at Porgera gold mine by optimising blast fragmentation By Walter Valery Alex Jankovic and S Kanchibotla Batu Hijau Model for Throughput Forecast Mining and Milling Optimisation and Expansion Studies Newmont Mining Corporation.

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