Difference between revisions of "Benchmarking: Specific Energy Consumption Models"

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| Measured specific energy consumption, kWh/t||9.55||7.28||0.34||17.18
  
| Measured specific energy consumption, kWh/t||9.55||7.28||0.34||17.18
 
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| Predicted specific energy consumption, kWh/t||10.26||7.84||0.40||18.50
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| Predicted specific energy consumption, kWh/t||9.78||8.33||0.39||18.50
 
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| Difference, kWh/t||0.71||0.56||0.06||1.32
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| Difference, kWh/t||0.23||1.05||0.05||1.32
 
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| Difference, %||7.2%||7.4%||14.9%||7.4%
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| Difference, %||2.4%||14.4%||14.7%||7.7%
 
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Revision as of 03:08, 26 January 2014

Benchmarking: Bond/Barratt Circuit Specific Energy Consumption - Copper Mountain

  • Morrison, R., Current Plant Conditions at Copper Mountain. Presentation to the BC/Yukon Branch Canadian Mineral Processors, November 29, 2012; Vancouver, Canada.

Result for default model conditions:

Tonnage
Model 1455 t/h
Measured 1600 t/h
Difference 145 t/h
Difference 9.5%


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Benchmarking: Bond/Barratt Circuit Specific Energy Consumption - Fort Knox

  • Magnuson, R.; Hallow, J.; Mosher, J.; Major, K., The Fort Knox Mill: Design, Commissioning and Operation. Proceedings of the SAG 2001 Conference, Vancouver, Canada.

Result for default model conditions:

Etotal WiO Tonnage
Model 11.95 16.60 kWh/t 1,522 t/h
Measured 10.50 13.97 kWh/t 1,733 t/h
Difference 1.45 2.63 kWh/t 211 t/h
Difference 12.9% 17.2% 12.9%

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Benchmarking: Bond/Barratt Circuit Specific Energy Consumption - Meadowbank

  • Muteb, P. & Allaire, J., Meadowbank Mine Process Plant Throughput Increase, Proceedings of the Canadian Mineral Processors Annual General Meeting, Ottawa, Canada, January 2013.

Paper describes a "sick" SAG mill and the changes made to "bring it to health". The "healthy" mill conditions benchmark as follows:

  • Actual SAG/ball motor powers (at shell): 3,168 kW / 4,105 kW
  • Actual daily average throughput: 500 tonnes/hour
  • Predicted SAG/ball motor powers (at shell): 3,096 kW / 4,182 kW
  • Predicted nominal throughput: 500 tonnes/hour (0% difference)
SAG Ball Mill total
Measured specific energy consumption, kWh/t 6.34 8.21 14.55
Predicted specific energy consumption, kWh/t 6.19 8.36 14.55
Difference, kWh/t -0.15 0.15 0.00
Difference, % -2.3% 1.8% 0.0%

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Benchmarking: Bond/Barratt Circuit Specific Energy Consumption - 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.

FAG BM Pebble
Crusher		 total
Measured specific energy consumption, kWh/t 9.55 7.28 0.34 17.18
Predicted specific energy consumption, kWh/t 9.78 8.33 0.39 18.50
Difference, kWh/t 0.23 1.05 0.05 1.32
Difference, % 2.4% 14.4% 14.7% 7.7%

Show details of benchmarking

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