Dynamic Modelling for Dense Medium Separation in Coal Beneficiation

Meyer, Ewald Jonathan; Craig, I.K.

doi:10.3182/20100802-3-za-2014.00008

Cited by 3 publications

(1 citation statement)

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“…One of the possible approaches to mathematical modelling is creating simple regressive models based on experimental results [41]. More complex models incorporate the conservation principles and other physical laws that are obeyed by all physical systems [42]. Chalavadi and Das adopted a fundamental force balance approach to develop a mathematical model that allows one to estimate the trajectories of particles subjected to the beneficiation process using the air table, thus enabling computation of the mass yield and the product quality (ash level) [27].…”

Section: Introductionmentioning

confidence: 99%

Modelling of Hard Coal Beneficiation Process Utilising Negative Pressure Pneumatic Separator

Stańczyk

2020

Energies

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The dry separation methods for coal beneficiation have been regaining attention in the past decades. A number of improved or newly designed devices have been developed—one of them is a negative pressure pneumatic separator (NPPS). The said method of separation is based on the differences in the physical properties between coal and gangue minerals, such as the grain density, size, and shape. The aim of the hereby presented work was to develop working models describing the operation of the NPPS. To validate the models, the calculation results were compared with experimental results of the tests carried out in the previous study on the topic. Based on the findings it can be inferred that the models accurately predict the separation results, i.e., the majority of results are within the range of estimated measurement uncertainties. Consequently, the models allow one to optimise the process to obtain the products with desirable properties.

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Section: Introductionmentioning

confidence: 99%