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The SMC Test was developed by Dr Steve Morrell as a cost-effective means of providing accurate data on the breakage characteristics of rock samples which can be used for a range of purposes including comminution circuit design and optimization, ore body profiling, geometallurgical modelling and Mine-to-Mill studies.
Dr Steve Morrell is a minerals processing engineer with over 40 years of specialist experience in the resources industry. Steve has been involved in the circuit design of the majority of major comminution circuits internationally, through which he has established himself as a world leading expert in comminution design and optimisation.
- Background
- Sample Quantity
- Number of Samples
- Size Scaling
The SMC Test® is a precision test that uses either crushed rock pieces that are very closely sized (so-called crush and select method) (Figure 4) or particles that are cut to similar size from drill core using a diamond saw (Figure 5). The latter approach (so-called cut-core method) is used when limited drill core sample is available. Almost any dr...
The amount of sample that is required depends on what sources are available to provide the rock samples eg, is it drill core, what size of core is it, is it whole, halved or quartered as well as the size fraction chosen to do the SMC Test® and whether the sample is going to be prepared by crushing or cutting. These factors are best discussed with y...
Contrary to what some published literature claims, the number of samples required is related to the variability of the deposit and not the type of comminution test used. Also the end use will influence the number of samples required. Hence if samples are required for a pre-feasibility study the number will be relatively low, whilst if samples are r...
For Determination of Mia, Mih and Mic Parameters
Formerly called “Calibration”, a more appropriate term is particle “Size Scaling”. NO SIZE SCALING is required to generate Mia, Mih and Mic parameters from a SMC Test as they are fixed functions of the DWi, which in turn is produced as a standard output from the SMC Test®.
For Determination of A and b Parameters
Where the SMC Test® is used to estimate values of A and b (used in the JK AG/SAG mill model) a so-called “Size Scaling ” factor may be required. The relationship between the DWi and the JK rock breakage parameters A and b makes use of the size-by-size nature of rock strength that is often apparent from the results of well controlled tests on different size fractions. This is illustrated for a range of different rock types in Figure 8, which shows how the gradients of the plots of normalised v...
Steve Morrell is known for Pirates of the Caribbean: Dead Men Tell No Tales (2017), The Muppets (2011) and Doubt (2008).
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27 apr 2020 · “The precision and accuracy of the SMC Test have been the main driving forces behind its success globally,” Dr Steve Morrell, SMC Testing CEO and inventor of the SMC Test, said. “These attributes of the test are hallmarks of reliability and quality that mining companies base important forecasting decisions and financial models ...
Steve Morrell
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