Development and application of a dynamic model for hindered-settling column separations

B. H. Kim, M. S. Klima

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

A phenomenological model, termed the "dynamic hindered-settling model", has been developed to represent the separation in a hindered-settling column. The model is based on the convection-diffusion equation as applied to hindered-settling conditions. The key features of the model development include the derivation of equations for the finite-difference solution scheme for material balance, the integration of the modified form of Concha and Almendra's hindered-settling equation to calculate settling velocities of particles, the development of a system to account for the continuous input/output of solids, and the addition of time-step functions to account for the underflow control valve action of a hindered-settling column. A Fortran program was written to solve the model. Simulations were carried out to evaluate column performance as a function of design and operating variables and material properties. The results, which are presented as product size distributions or fractional recovery curves, demonstrate that the dynamic hindered-settling model can be used to predict hindered-settling column separations.

Original languageEnglish (US)
Pages (from-to)403-410
Number of pages8
JournalMinerals Engineering
Volume17
Issue number3
DOIs
StatePublished - Mar 2004

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Chemistry(all)
  • Geotechnical Engineering and Engineering Geology
  • Mechanical Engineering

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