Comminution Circuit Specific Energy (Morrell)

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Description

This article describes the Morrell method for estimating the specific energy of comminution circuits (Morrell et al., 2016).[1]

Model theory

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Excel

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The Morrell specific energy models may be invoked from the Excel formula bar with the following function calls:

=mdSMC_AbToSMC(A as Double, b as Double, SG as Double, BWI as Double, Optional conversionMethod as Integer = 0)
=mdSMC_P80(K as Double, Mi as Double, F80 as Double, W as Double, Optional returnCalcs as Boolean = false)
=mdSMC_W(K as Double, Mi as Double, x1 as Double, x2 as Double, Optional returnCalcs as Boolean = false)
=mdSMC_Wa(K1 as Double, Mia as Double, x1 as Double, Optional returnCalcs as Boolean = false)
=mdSMC_Wb(Mib as Double, x3 as Double, Optional returnCalcs as Boolean = false)
=mdSMC_Wc(K2 as Double, Mic as Double, x1 as Double, x2 as Double, Optional returnCalcs as Boolean = false)
=mdSMC_Wh(K3 as Double, Mih as Double, x1 as Double, x2 as Double, Optional returnCalcs as Boolean = false)
=mdSMC_Ws(Mia as Double, x1 as Double, x2 as Double, Optional returnCalcs as Boolean = false)

Invoking the function with no arguments will print Help text associated with the model, including a link to this page.

References

  1. Morrell, S., Daniel, M. and Burke, J., 2016. Morrell method for determining comminution circuit specific energy and assessing energy utilization efficiency of existing circuits. Global Mining Standards and Guidelines Group: Ormstown, QC, Canada.