Benchmarking: Bond - Esperanza - Revision history

Alex Doll at 23:42, 9 January 2015

2015-01-09T23:42:12Z

Alex Doll: /* Modelling */

2015-01-09T23:36:17Z

Modelling

Alex Doll at 21:50, 9 January 2015

2015-01-09T21:50:02Z

Alex Doll: /* Modelling */

2015-01-09T19:04:40Z

Modelling

Alex Doll at 01:24, 9 January 2015

2015-01-09T01:24:53Z

Alex Doll: Created page with "category:benchmarking ==Benchmarking: Bond/Barratt SAG Mill Specific Energy Consumption - Esperanza == * ''Villanueva, F. and Soto, L.'', '''SEC and the impact on a mills ..."

2015-01-08T00:18:49Z

Created page with "category:benchmarking ==Benchmarking: Bond/Barratt SAG Mill Specific Energy Consumption - Esperanza == * ''Villanueva, F. and Soto, L.'', '''SEC and the impact on a mills ..."

New page

[[category:benchmarking]]
==Benchmarking: Bond/Barratt SAG Mill Specific Energy Consumption - Esperanza ==
* ''Villanueva, F. and Soto, L.'', '''SEC and the impact on a mills selection for DMC project'''. Proceedings of the XXVII International Mineral Processing Congress, October 2014, Santiago, Chile. C14-23.

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 * A&times;b of Esperanza ore (Aug-Dec 2012); avg= 39; range is 30.7 to 45.5.
 * Wi<sub>BM</sub> average is 16.0 kWh/st, = 17.6 kWh/tonne.
-* E<sub>SAG</sub> for "normal" blasting, average = 5.2 kWh/tonne; range is 3.9 to 7.2 kWh/tonne.
+* E<sub>SAG</sub> for "normal" blasting, average = 5.5 kWh/tonne; range is 3.9 to 7.2 kWh/tonne.
 * E<sub>SAG</sub> for "high intensity" blasting typically 10% lower E<sub>SAG</sub>.
 * SAG feed size range 33.6% to 49.0 percent passing 1&frac14; inch (32 mm).
 Design criteria for expansion cases (which may reflect Esperanza operating conditions)
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 File:Screengrab_EsperanzaAvgOre.png|Esperanza benchmarking circuit model screen grab
 </gallery>
 {|class="wikitable" border="1"
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 | Difference, %
 | style='text-align:center'| model predicts 7% high
 |}

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 File:Screengrab_EsperanzaSAG.png|Model configuration for benchmarking
 File:Screengrab_EsperanzaBM.png|Model configuration for benchmarking
-File:Screengrab_AvgOre.png|Esperanza benchmarking circuit model screen grab
+File:Screengrab_EsperanzaAvgOre.png|Esperanza benchmarking circuit model screen grab
 </gallery>
 == Results ==

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 <math>E_{SAG} = 22,548 (A \times b)^{-0.356} </math>
 Design criteria for expansion cases (which may reflect Esperanza operating conditions)
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 ==Modelling==
 SAG mill is modelled using following:
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 * total filling 30% v/v gives the desired 95% utilization of motor power

← Older revision		Revision as of 19:04, 9 January 2015
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	* assume 6 inch liner effective thickness, mill speed 75% of critical		* assume 6 inch liner effective thickness, mill speed 75% of critical
	* total filling 30% v/v gives the desired 95% utilization of motor power		* total filling 30% v/v gives the desired 95% utilization of motor power
		+
		+	The Bond/Barratt SABC-B model is used with the default 10% E<sub>ssbm</sub> calibration factor.
		+	* circuit F<sub>80</sub> = 132 mm
		+	* circuit P<sub>80</sub> = 180 µm
		+	* The average ball mill work index given as 16.5 kWh/tonne
		+	* The relationship between A×b and Wi<sub>RM</sub> for Andean copper porphyries can be used to determine the following rod mill work index values.
		+	[[File:Twcompare_axb_vs_wirm.svg‎\|thumb]]

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 [[category:benchmarking]]
 ==Benchmarking: Bond/Barratt SAG Mill Specific Energy Consumption - Esperanza ==
 * ''Villanueva, F. and Soto, L.'', '''SEC and the impact on a mills selection for DMC project'''. Proceedings of the XXVII International Mineral Processing Congress, October 2014, Santiago, Chile. C14-23.