Benchmarking: Santa Rita ball mill model: Difference between revisions

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* Induction motor size 5800 kW (with gearbox and pinion)
* Induction motor size 5800 kW (with gearbox and pinion)
* Rubber lining (assume 8 inch effective thickness)
* Rubber lining (assume 8 inch effective thickness)
* Ore density: 3.23 kg/L (closest sample usable for modelling is 3.10 kg/L)
* Ore density: 3.24 kg/L
* Mill speed not given, assumed to be 74% critical
* Mill speed not given, assumed to be 74.7% critical (13.3 RPM)


{| class="wikitable" border="1"
{| class="wikitable" border="1"
Line 20: Line 20:
! Morrell Model, kW
! Morrell Model, kW
! Nordberg model, kW
! Nordberg model, kW
(no density correction)
! Nordberg model, kW
(density correction)
|-
|-
| July 2010
| July 2010
| 5085
| 5085
| 27.5% v/v
| 27.5% v/v
| 4747 (-6.9%)
| 4979 (-2.1%)
| 4626 (-9.5%)
| 4706 (-8.1%)
| 5083 (0.0%)
|}
|}

Latest revision as of 01:56, 26 January 2014

Benchmarking: Ball Mill Power Draw - Santa Rita

Latchireddi, S. & Faria, E., Achievement of High Energy Efficiency in Grinding Mills at Santa Rita, Proceedings of the Canadian Mineral Processors Annual General Meeting, Ottawa, Canada, January 2013.

Faria, E. & Latchireddi, S., Commissioning and Operation of Milling Circuit at Santa Rita Nickel Operation, Paper #137: Proceedings of the International Autogenous Grinding, Semiautogenous Grinding and High Pressure Grinding Roll Technology Conference, Vancouver, Canada, September 2011.

  • Ball mill dimensions 20 ft diameter by 28.4 ft effective grinding length
  • Induction motor size 5800 kW (with gearbox and pinion)
  • Rubber lining (assume 8 inch effective thickness)
  • Ore density: 3.24 kg/L
  • Mill speed not given, assumed to be 74.7% critical (13.3 RPM)
DCS Power, kW Mill filling Morrell Model, kW Nordberg model, kW

(no density correction)

Nordberg model, kW

(density correction)

July 2010 5085 27.5% v/v 4979 (-2.1%) 4706 (-8.1%) 5083 (0.0%)
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