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[[Category:Bibliography]]
 
[[Category:Models]]
 
[[Category: Benchmarking]]
 
==Bibliography: Benchmarking of models==
 
The following list of references show data useful for benchmarking against the different models.
 
 
==Benchmarking: Circuit Specific Energy Consumption - Bond/Barratt==
 
* ''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:
 
{| class="wikitable" border="1"
 
|-
 
!
 
! E<sub>total</sub>
 
! Wi<sub>O</sub>
 
!
 
! 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 - Fort Knox|Show details of benchmarking]]
 
 
==Benchmarking: Circuit Specific Energy Consumption - Bond/Barratt==
 
 
* ''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:
 
{| class="wikitable" border="1"
 
|-
 
!
 
! Tonnage
 
|-
 
| Model
 
| 1455 t/h
 
|-
 
| Measured
 
| 1600 t/h
 
|-
 
| Difference
 
| 145 t/h
 
|-
 
| Difference
 
| 9.5%
 
|}
 
 
 
[[Benchmarking: Bond - Copper Mountain|Show details of benchmarking]]
 
 
==Benchmarking: SAG Mill Power Draw - Fimiston==
 
 
* ''Nelson, M; Valery, W; Morrell, S'', '''Performance Characteristics and Optimisation of the Fimiston (KCGM) SAG Mill Circuit''', Page 233 - 248, SAG 1996 Conference, Vancouver, Canada.
 
 
{| class="wikitable" border="1"
 
|-
 
! Survey
 
! Survey Power,<br>kW at input
 
! Mill speed,<br>%critical
 
! Ball load,<br>%v/v
 
! Total load,<br>%v/v
 
! Pulp %solids,<br>w/w
 
! Morrell SAG Model,<br>kW at input / ''shell''
 
! Loveday/Baratt Model,<br>kW at input / ''shell''
 
|-
 
| Survey 1
 
| '''9,255'''
 
| 72.5
 
| 13
 
| 21.6
 
| 65.9
 
| '''9,268''' / ''8,764''
 
| '''10,372''' / ''9,808''
 
|-
 
| Survey 2
 
| '''10,374'''
 
| 77
 
| 13
 
| 25.2
 
| 63.3
 
| '''10,481''' / ''9,911''
 
| '''11,238''' / ''10,636''
 
|-
 
| Survey 3
 
| '''8,395'''
 
| 75
 
| 15
 
| 16.1
 
| 70
 
| '''9,193''' / ''8,693''
 
| '''10,818''' / ''10,230''
 
|-
 
| Survey 4
 
| '''8,299'''
 
| 78
 
| 11.5
 
| 13.5
 
| 60
 
| '''7,766''' / ''7,344''
 
| '' can't do ''
 
|-
 
| Survey 5
 
| '''10,976'''
 
| 80
 
| 11.5
 
| 22.2
 
| 60
 
| '''9,877''' / ''9,340''
 
| '''10,322''' / ''9,760''
 
|-
 
| Survey 6
 
| '''8,616'''
 
| 74
 
| 11.5
 
| 13.6
 
| 63
 
| '''7,394''' / ''6,992''
 
| '' can't do ''
 
|-
 
| Survey 7
 
| '''11,684'''
 
| 82
 
| 14
 
| 20
 
| 75
 
| '''10,782''' / ''10,195''
 
| '''11,037''' / ''10,437''
 
|-
 
| Survey 8
 
| '''11,610'''
 
| 78
 
| 13
 
| 28.6
 
| 75
 
| '''11,415''' / ''10,794''
 
| '''11,125''' / ''10,520''
 
|-
 
| Survey 9
 
| '''11,571'''
 
| 78
 
| 13
 
| 25.8
 
| 75
 
| '''10,990''' / ''10,392''
 
| '''11,668''' / ''11,033''
 
|-
 
| Survey 10
 
| '''9,408'''
 
| 80
 
| 12
 
| 19
 
| 75
 
| '''9,655''' / ''9,130''
 
| '''10,309''' / ''9,749''
 
|}
 
 
* The overall average difference between the Morrell model motor input predictions and the measurements are -3.4%, and range from -15.3% to +9.1%.
 
*The overall average difference between the Loveday/Barratt model motor input predictions and the measurements are +4.8%, and range from -6.1% to +25.2%.
 
 
[[Benchmarking: Fimiston SAG|See details of benchmarking]]
 
 
==Benchmarking: SAG Mill Power Draw - Cadia==
 
* ''Radziszewski, P.; Valery, W'', '''Cadia SAG Mill Simulated Charge Behaviour''', Annual General Meeting of the Canadian Mineral Processors, Ottawa, 1999.
 
 
{| class="wikitable" border="1"
 
|-
 
! Survey
 
! Survey Power,<br>kW at shell
 
! Mill speed,<br>%critical
 
! Ball load,<br>%v/v
 
! Total load,<br>%v/v
 
! Morrell SAG Model,<br>kW at shell
 
! Loveday/Baratt Model,<br>kW at shell
 
|-
 
| Survey 1
 
| 11,189
 
| 79
 
| 0
 
| 28.8
 
| 11,868
 
| 12,126
 
|-
 
| Survey 2
 
| 10,321
 
| 79
 
| 0
 
| 28.5
 
| 11,787
 
| 12,039
 
|-
 
| Survey 3
 
| 10,824
 
| 78
 
| 4
 
| 25
 
| 12,762
 
| 13,390
 
|-
 
| Survey 4
 
| 14,945
 
| 78
 
| 4
 
| 40.7
 
| 15,806
 
| 15,096
 
|-
 
| Survey 5
 
| 17,586
 
| 74
 
| 12
 
| 31.6
 
| 17,351
 
| 18,216
 
|-
 
| Survey 6
 
| 17,963
 
| 78
 
| 12
 
| 26.1
 
| 17,298
 
| 18,505
 
|}
 
 
* Morrell model predicts, on average, 6% high.
 
* Loveday/Barratt model predicts, on average, 9% high.
 
 
[[Benchmarking: Cadia SAG mill|See details of benchmarking]]
 
 
==Benchmarking: SAG Mill Power Draw - Cadia==
 
* ''Boghey, A.; Svalbonas, V.; Jones, S.M.'', '''Supply, Installation &amp; Commissioning of the World's Largest Grinding Mill''', Annual General Meeting of the Society for Mining, Metallurgy &amp; Exploration (SME), 2000.
 
 
Mill filling level 33% v/v. Ball charge not measured, but expected to be in 12% to 13% v/v range. Ore density not indicated, assuming 2.65 kg/L. Ball density given as 7.85 kg/L.
 
 
Survey conducted during late commissioning, Figure 8 yields:
 
{| class="wikitable" border="1"
 
|-
 
! Survey
 
! Survey Power,<br>kW at shell
 
! Mill speed,<br>RPM
 
! Mill speed,<br>%critical
 
! Morrell SAG Model,<br>kW at shell
 
! Loveday/Barratt Model,<br>kW at shell
 
|-
 
| 23:30
 
| 19,300
 
| 8.99
 
| 73.7
 
| 17,148
 
| 18,233
 
|-
 
| 23:40
 
| 19,450
 
| 9.4
 
| 77.1
 
| 18,042
 
| 19,199
 
|-
 
| 23:50
 
| 19,550
 
| 9.9
 
| 81.2
 
| 19,058
 
| 19,868
 
|}
 
 
==Benchmarking: SAG Mill Power Draw - Yanacocha==
 
 
==Benchmarking: Ball Mill Power Draw - Fimiston==
 
* ''Nelson, M; Valery, W; Morrell, S'', '''Performance Characteristics and Optimisation of the Fimiston (KCGM) SAG Mill Circuit''', Page 233 - 248, SAG 1996 Conference, Vancouver, Canada.
 
 
{| class="wikitable" border="1"
 
|-
 
! Survey
 
! Survey Power,<br>kW at input
 
! Mill speed,<br>%critical
 
! Total load,<br>%v/v
 
! Pulp %solids,<br>w/w
 
! Morrell SAG Model,<br>kW at input / ''shell''
 
! Nordberg Model,<br>kW at input / ''shell''
 
|-
 
| Survey 1
 
| '''3,864'''
 
| 68.3
 
| 38.7
 
| 72.0
 
| '''3,933''' / ''3,776''
 
| '''3,592''' / ''3,345''
 
|}
 
 
* Morrell model predicts 2% high
 
* Nordberg model predicts 7% low
 
 
[[Benchmarking: Fimiston Ball Mills|See details of benchmarking]]
 
 
==Historic &amp; Other Interesting Benchmarking==
 
# ''Myers, J.F., Michaelson, S.D., Bond, F.C.'', '''Rod Milling&mdash;Plant and Laboratory Data''', Technical Publication No. 2175, American Institute of Mining and Metallurgical Engineers, 1947. [http://www.onemine.org/search/summary.cfm/Rod-MillingPlant-And-Laboratory-Data?d=655D010DD9E32C42324054B43931E04C552207CAB9653233F0AC73A4C8F07C4928898&fullText=Myers%20Michaelson%20Bond]
 

Latest revision as of 20:51, 17 January 2013