COMPOSITIONAL BLOCK KRIGING FOR GEOMETALLURGICAL OPTIMIZATION

World Mining Congress
Adaptive processing is often related to the mineral composition of the mining block currently processed. The portions of waste, ore and secondary product minerals considered are always positive and typically sum to 100% (i.e. a composition). A typical solution to predict block averages of spatially dependent quantities would be block kriging. However, kriging is based on spatial correlations and it has been repeatedly shown that correlations of compositional data are spurious and blurred by the constant sum constraint.
Keywords: Data; Processing; Value; Dispersion; variograms; Distribution; Models; Model; Statistics; Supports;
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