Quantification of the degree of mixing in bins

Nicholas Standish, Yinong Liu, Arnold G McLean

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Flow pattern of solids in mass-flow and funnel-flow bins is analysed theoretically using the residence time distribution (RTD) theory. It is shown that the two flow patterns are readily characterised and quantified by the RTD parameters of the tracer response curves and, in particular, by the mean and the variance of these curves. The relationships between the means and the extent of material in the bin are shown to differ for the two flow patterns but are characteristic for each pattern. It is also shown how some useful bin and flow parameters may be quantified from the RTD data.

Predictions of the theory are examined using experimental data obtained with ferrous sinter and a model funnel-flow bin (60 kg capacity) with and without a flow-corrective insert. The results show reasonable agreement between theory and measurement.
Original languageEnglish
Pages (from-to)197-208
JournalPowder Technology
Volume54
Issue number3
DOIs
Publication statusPublished - Mar 1988

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