Coal sampling
W. Membrey, ALS Ltd, Australia
Abstract:
Coal sampling is fundamentally important to exploration, production and utilisation of coal. All testing and analysis results are derived from samples. This chapter gives an overview of the scientific basis of sampling based on two key characteristics of coal; particle size and particle density. The application of sampling theory to sampling systems and practical situations is discussed.
Key words
sampling
intrinsicheterogeneity
distributional heterogeneity
equiprobable sampling
precision
accuracy
variogram
sampling systems
mechanical sampler
sample preparation
coal washability
sampling constant
5.1 Introduction
All testing and analysis results that define the quality characteristics ...
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