Difference between revisions of "Benchmarking: Santa Rita ball mill model"
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* Induction motor size 5800 kW (with gearbox and pinion) |
* Induction motor size 5800 kW (with gearbox and pinion) |
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* Rubber lining (assume 8 inch effective thickness) |
* Rubber lining (assume 8 inch effective thickness) |
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| − | * Ore density: 3. |
+ | * 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) |
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! Morrell Model, kW |
! Morrell Model, kW |
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! Nordberg model, kW |
! Nordberg model, kW |
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| + | (no density correction) |
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| + | ! Nordberg model, kW |
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| + | (density correction) |
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| July 2010 |
| July 2010 |
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| 5085 |
| 5085 |
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| 27.5% v/v |
| 27.5% v/v |
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| − | | |
+ | | 4979 (-2.1%) |
| − | | |
+ | | 4706 (-8.1%) |
| + | | 5083 (0.0%) |
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Latest revision as of 03:56, 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%) |
