Benchmarking: Santa Rita ball mill model - Revision history

Alex Doll: /* Benchmarking: Ball Mill Power Draw - Santa Rita */

2014-01-26T01:56:43Z

Benchmarking: Ball Mill Power Draw - Santa Rita

Alex Doll: /* Benchmarking: Ball Mill Power Draw - Santa Rita */

2013-01-27T21:28:58Z

Benchmarking: Ball Mill Power Draw - Santa Rita

Alex Doll: Created page with "category:Benchmarking category:Bibliography ==Benchmarking: Ball Mill Power Draw - Santa Rita== ''Latchireddi, S. & Faria, E.'', '''Achievement of High Energy Efficie..."

2013-01-27T21:05:08Z

Created page with "category:Benchmarking category:Bibliography ==Benchmarking: Ball Mill Power Draw - Santa Rita== ''Latchireddi, S. & Faria, E.'', '''Achievement of High Energy Efficie..."

New page

[[category:Benchmarking]]
[[category:Bibliography]]
==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: 3.23 kg/L (closest sample usable for modelling is 3.10 kg/L)
* Mill speed not given, assumed to be 74% critical

{| class="wikitable" border="1"
|-
!
! DCS Power, kW
! Mill filling
! Morrell Model, kW
! Nordberg model, kW
|-
| July 2010
| 5085
| 27.5% v/v
| 5093 (+0.2%)
| 4626 (-9.5%)
|}

@@ Line 10: / Line 10: @@
 * Induction motor size 5800 kW (with gearbox and pinion)
 * Rubber lining (assume 8 inch effective thickness)
-* Ore density: 3.23 kg/L (closest sample usable for modelling is 3.10 kg/L)
+* 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)
 {| class="wikitable" border="1"
@@ Line 20: / Line 20: @@
 ! Morrell Model, kW
 ! Nordberg model, kW
 |-
 | July 2010
 | 5085
 | 27.5% v/v
-| 4747 (-6.9%)
+| 4979 (-2.1%)
-| 4626 (-9.5%)
+| 4706 (-8.1%)
 |}