Difference between revisions of "Benchmarking: Bond - Cadia"
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==Benchmarking: Bond/Barratt - Cadia== |
==Benchmarking: Bond/Barratt - Cadia== |
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''Dunne, R., Morrell, S., Lane, G., Valery, W. and Hart, S.'', '''Design of the 40 foot diameter SAG mill installed at the Cadia gold copper mine'''. Proceedings of SAG 2001, pages I-43 to I-58. |
''Dunne, R., Morrell, S., Lane, G., Valery, W. and Hart, S.'', '''Design of the 40 foot diameter SAG mill installed at the Cadia gold copper mine'''. Proceedings of SAG 2001, pages I-43 to I-58. |
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''Lane, G., Foggiatto, B. and Bueno, M'', '''Power-based comminution calculations using Ausgrind'''. Proceedings of Procemin 2013, Chapter 2, paper 2. |
''Lane, G., Foggiatto, B. and Bueno, M'', '''Power-based comminution calculations using Ausgrind'''. Proceedings of Procemin 2013, Chapter 2, paper 2. |
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| − | + | Papers describe a survey conducted shortly after start-up. |
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| − | Ore characterization |
+ | ===Ore characterization=== |
* Monzonite ore type, |
* Monzonite ore type, |
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** Wi<sub>C</sub> = 16.5 (metric) |
** Wi<sub>C</sub> = 16.5 (metric) |
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** DWI = 7.5 |
** DWI = 7.5 |
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** density = 2.7 t/m³ |
** density = 2.7 t/m³ |
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| − | * SAG feed is primary crushed to F<sub>80</sub> = 98 mm |
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| − | * Ball mill circuit product P<sub>80</sub> = 170 µm |
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| − | SAG mill characteristics |
+ | ===SAG mill characteristics=== |
* Diameter inside shell = 12.2 m (40 ft) |
* Diameter inside shell = 12.2 m (40 ft) |
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* EGL = 6.1 m (20 ft) |
* EGL = 6.1 m (20 ft) |
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* Mill speed = 78% of critical <small>(Lane et al, 2013 appears to have a typo. They claim 72% which actually looks like the BM speed)</small> |
* Mill speed = 78% of critical <small>(Lane et al, 2013 appears to have a typo. They claim 72% which actually looks like the BM speed)</small> |
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* Pulp density = 70% w/w |
* Pulp density = 70% w/w |
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| + | * SAG feed is primary crushed to F<sub>80</sub> = 98 mm |
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| − | Ball mill characteristics |
+ | ===Ball mill characteristics=== |
* Diameter inside shell = 6.7 m (22 ft) |
* Diameter inside shell = 6.7 m (22 ft) |
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* EGL = 11.3 m (36.5 ft) |
* EGL = 11.3 m (36.5 ft) |
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* Mill speed = 72% of critical |
* Mill speed = 72% of critical |
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* Pulp density = 70% w/w |
* Pulp density = 70% w/w |
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| + | * Ball mill circuit product P<sub>80</sub> = 170 µm |
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| + | |||
| + | ===Modelling=== |
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| + | <gallery> |
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| + | File:Procemin-CadiaBenchmarking.png|Model screenshot of Cadia 1998 survey simulation |
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| + | File:Procemin2013-CadiaSag.png|SAG model screenshot of Cadia 1998 survey simulation |
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| + | File:Procemin2013-CadiaBM.png|Ball mill model screenshot of Cadia 1998 survey simulation |
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| + | </gallery> |
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| + | |||
| + | ===Results=== |
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Result for default model conditions: |
Result for default model conditions: |
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Revision as of 18:50, 31 January 2015
Contents
Benchmarking: Bond/Barratt - Cadia
Dunne, R., Morrell, S., Lane, G., Valery, W. and Hart, S., Design of the 40 foot diameter SAG mill installed at the Cadia gold copper mine. Proceedings of SAG 2001, pages I-43 to I-58.
Lane, G., Foggiatto, B. and Bueno, M, Power-based comminution calculations using Ausgrind. Proceedings of Procemin 2013, Chapter 2, paper 2.
Papers describe a survey conducted shortly after start-up.
Ore characterization
- Monzonite ore type,
- WiC = 16.5 (metric)
- WiRM = 19.0 (metric)
- WiBM = 17.1 (metric)
- A×b = 36
- DWI = 7.5
- density = 2.7 t/m³
SAG mill characteristics
- Diameter inside shell = 12.2 m (40 ft)
- EGL = 6.1 m (20 ft)
- Ball filling = 12% v/v
- Total filling = 25% v/v
- Mill speed = 78% of critical (Lane et al, 2013 appears to have a typo. They claim 72% which actually looks like the BM speed)
- Pulp density = 70% w/w
- SAG feed is primary crushed to F80 = 98 mm
Ball mill characteristics
- Diameter inside shell = 6.7 m (22 ft)
- EGL = 11.3 m (36.5 ft)
- Ball filling = 30% v/v
- Mill speed = 72% of critical
- Pulp density = 70% w/w
- Ball mill circuit product P80 = 170 µm
Modelling
Model screenshot of Cadia 1998 survey simulation
SAG model screenshot of Cadia 1998 survey simulation
Ball mill model screenshot of Cadia 1998 survey simulation
Results
Result for default model conditions:
| Esag | Epeb | Ebm | Etotal | t/h | T80, mm | |
|---|---|---|---|---|---|---|
| Predicted | 8.6 | 0.3 | 8.5 | 17.4 | 2000 | 2.06 |
| Survey | 8.6 | - | 8 | 16.6 | 2065 | 1.34 |
| Difference | 0 | 0.3 | 0.5 | 0.8 | -65 | 0.72 |
| Difference | 0% | - | 6% | 5% | -3% | 54% |
