Cross-stream cutters are widely used in the mining and resources industry to obtain representative samples of particulate flows. Discrete element modelling (DEM) and analysis can be used to investigate influences of operational parameters, sampler design and material physical properties in the generation of the Increment Extraction Error (IEE), which when present, results in a frequently biased, non-representative sample. The study investigates the practicality of the rules and recommendations proposed by Dr. Pierre Gy that were developed and established as principles for the correct extraction of samples in industrial sampling equipment. Results validate Pierre Gy’s sampling theory using DEM in a cross-stream cutter of a sulphide gold plant. Importantly, the outcomes indicate that careful consideration must be given to physical ore properties and, consequently, that sampling systems should be developed specifically to each application.
que além de orientadora, foi amiga, e me abriu as portas do universo magnífico da disciplina de Amostragem.Aos amigos da Universidade de Newcastle (Austrália), que se dedicaram a me ensinar ferramentas específicas para desenvolvimento do trabalho.À ESSS que disponibilizou gratuitamente a licença do software Rocky DEM para realização do trabalho.Aos colegas da AngloGold Ashanti, pelo fornecimento dos dados e informações, além de todo apoio e compreensão ao longo de todo caminho percorrido. RESUMO MAGALHÃES, M. F. Utilização de simulação de elementos discretos (DEM) para avaliação de parâmetros da teoria da amostragem. 2022. Tese (Mestrado em Ciências) -
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