a mill power equation for sag mills

  • Optimization and Control of a Primary SAG Mill Using Real ...

    Optimization and Control of a Primary SAG Mill Using Real-time Grind Measurement C.W Steyn*, K Keet**, W Breytenbach*** ... passing 75 µm). With this strategy, the controller was able to move the mill power and load into the region that ... employs a φ7.3 m x 8.2 m EGL SAG mills with 2 x 5200 kW motors in primary milling duty.

  • sag mills millpower

    Mill (grinding) - Wikipedia. SAG is an acronym for Semi-Autogenous Grinding. SAG mills are autogenous mills but use grinding balls like a ball mill. A SAG mill is usually a primary or first stage grinder. SAG mills use a ball charge of 8 to 21%. The largest SAG mill is 42' (12.8m) in diameter, powered by a 28 MW (38,000 HP) motor.

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  • Ball Mill Design/Power Calculation

    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 ...

  • GROSS POWER CALCULATOR - SMC Testing

    GROSS POWER CALCULATOR General This model uses the equations from Morrell's 1993 PhD thesis: "The Prediction of Power Draw in Wet Tumbling Mills". The model is also described in detail in the book "Mineral Comminution Circuits Their ... Slurry pooling causes the power draw in AG and SAG mills to be lower than a mill without a slurry ...

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  • Ball Mill Design/Power Calculation - LinkedIn

    Dec 12, 2016 · If P is less than 80% passing 70 microns, power consumption will be. Ball Mill Power Calculation Example. A wet grinding ball mill in closed circuit is to .

  • Autogenous and Semi-Autogenous Mills

    AG/SAG mills are normally used to grind run-offmine ore or primary crusher product. Feed size to the mill is limited to that size which can be practically conveyed and introduced into the mill. The mill product can either be finished size ready for processing, or an intermediate size ready for final grinding in a ball mill, pebble mill, or

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  • Autogenous and Semi-Autogenous Mills

    AG/SAG mills are normally used to grind run-offmine ore or primary crusher product. Feed size to the mill is limited to that size which can be practically conveyed and introduced into the mill. The mill product can either be finished size ready for processing, or an intermediate size ready for final grinding in a ball mill, pebble mill, or

    [PDF]
  • A mill power equation for SAG mills | SpringerLink

    Development of an equation for tumbling charge and balls plus comparison to plant data suggests that the net mill power for cylindrical semiautogenous mills can be calculated from $${m_p} =...