Benchmarking: Specific Energy Consumption Models
Contents
- 1 Benchmarking: Bond/Barratt Circuit Specific Energy Consumption - Copper Mountain
- 2 Benchmarking: Bond/Barratt Circuit Specific Energy Consumption - Fort Knox
- 3 Benchmarking: Bond/Barratt Circuit Specific Energy Consumption - Meadowbank
- 4 Benchmarking: Bond/Barratt Circuit Specific Energy Consumption - Santa Rita
- 5 Benchmarking: Bond/Barratt Circuit Specific Energy Consumption - Macraes
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% |
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% |
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% |
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% |
Benchmarking: Bond/Barratt Circuit Specific Energy Consumption - Macraes
Barns, K., Lane, G., Osten, K. & Scagliotta, N., Benchmarking Energy Efficiency - A Case Study at Macraes Gold Mine, Proceedings of the AusIMM MetPlant conference, Perth, Australia, September 2004.
