Alex Doll: /* Barratt Total Circuit Specific Energy Equation */

2012-12-02T22:01:05Z

Barratt Total Circuit Specific Energy Equation

Alex Doll: Created page with " Category:formula ==Barratt Total Circuit Specific Energy Equation== This is a basic equation of the family of Bond/Barratt calculations. It describes specific..."

2012-12-02T21:57:16Z

Created page with "<noinclude> Category:formula ==Barratt Total Circuit Specific Energy Equation== This is a basic equation of the family of Bond/Barratt calculations. It describes specific..."

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<noinclude>
[[Category:formula]]
==Barratt Total Circuit Specific Energy Equation==
This is a basic equation of the family of Bond/Barratt calculations. It describes specific energy requirement of a grinding circuit consisting of primary SAG (or Autogenous) mills and secondary ball mills.

The formula assumes that:
* The breakage properties of an ore is a function of measured hardness value; in this method the three Bond work index values.
* There exists a "maximum efficiency" grinding circuit configuration: the multi-stage crushing and single-stage ball mill circuit.
* The grinding specific energy requirements of different grinding circuit configurations can be related by comparing their efficiency relative to the "maximum efficiency" circuit.

The maximum efficiency circuit is described by the [[Template:EssbmEquation|Rowland E<sub>ssbm</sub> equation]].

<math>E_{total} = </noinclude> E_{ssbm} \times (1+CF) <noinclude></math>

where:
* ''[[Template:EssbmEquation|E<sub>ssbm</sub>]]'' is the Rowland specific power consumption for a multi-stage crushing and single-stage ball mill circuit.
* ''CF'' is a contingency factor that relates the grinding efficiency of the circuit being modelled versus the "maximum efficiency" circuit. In general, the CF value for a well-designed SABC circuit is 0.10 and the CF value for a well-designed SAB circuit is 0.15.

See list of pages that use this formula: {{Special:WhatLinksHere/Template:BarrattEtotalEquation}}
</noinclude>

@@ Line 4: / Line 4: @@
 This is a basic equation of the family of Bond/Barratt calculations.  It describes specific energy requirement of a grinding circuit consisting of primary SAG (or Autogenous) mills and secondary ball mills.
 The formula assumes that:
 * The breakage properties of an ore is a function of measured hardness value; in this method the three Bond work index values.
@@ Line 9: / Line 15: @@
 * The grinding specific energy requirements of different grinding circuit configurations can be related by comparing their efficiency relative to the "maximum efficiency" circuit.
-The maximum efficiency circuit is described by the [[Template:EssbmEquation|Rowland E<sub>ssbm</sub> equation]].
+The maximum efficiency circuit is described by the [[Template:EssbmEquation|Rowland E<sub>ssbm</sub> equation]]
 <math>E_{total} = </noinclude> E_{ssbm} \times (1+CF) <noinclude></math>
 where:
 * ''[[Template:EssbmEquation|E<sub>ssbm</sub>]]'' is the Rowland specific power consumption for a multi-stage crushing and single-stage ball mill circuit.
-* ''CF'' is a contingency factor that relates the grinding efficiency of the circuit being modelled versus the "maximum efficiency" circuit.  In general, the CF value for a well-designed SABC circuit is 0.10 and the CF value for a well-designed SAB circuit is 0.15.
+* ''CF'' is a contingency factor that relates the grinding efficiency of the circuit being modelled versus the "maximum efficiency" circuit.
 See list of pages that use this formula: {{Special:WhatLinksHere/Template:BarrattEtotalEquation}}
 </noinclude>

Template:BarrattEtotalEquation - Revision history

Alex Doll: /* Barratt Total Circuit Specific Energy Equation */

Alex Doll: Created page with " Category:formula ==Barratt Total Circuit Specific Energy Equation== This is a basic equation of the family of Bond/Barratt calculations. It describes specific..."