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A Model of Froth Fl...
A Model of Froth Flotation with Drainage : Simulations and Comparison with Experiments
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- Betancourt, Fernando (author)
- University of Concepción
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- Bürger, Raimund (author)
- University of Concepción
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- Diehl, Stefan (author)
- Lund University,Lunds universitet,Numerisk analys,Forskargrupper vid Lunds universitet,Partiella differentialekvationer,Matematik LTH,Matematikcentrum,Institutioner vid LTH,Lunds Tekniska Högskola,Numerical Analysis,Lund University Research Groups,Partial differential equations,Mathematics (Faculty of Engineering),Centre for Mathematical Sciences,Departments at LTH,Faculty of Engineering, LTH
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- Gutiérrez, Leopoldo (author)
- University of Concepción
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- Martí, M. Carmen (author)
- University of Valencia
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- Vásquez, Yolanda (author)
- University of Concepción
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(creator_code:org_t)
- 2023-02-28
- 2023
- English.
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In: Minerals. - : MDPI AG. - 2075-163X. ; 13:3
- Related links:
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Abstract
Subject headings
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- The operation of a froth flotation column can be described by a nonlinear convection–diffusion partial differential equation that incorporates the solids–flux and drift–flux theories as well as a model of foam drainage. The resulting model predicts the bubble and (gangue) particle volume fractions as functions of height and time. The steady-state (time-independent) version of the model defines so-called operating charts that map conditions on the gas and pulp feed rates that allow for operation with a stationary froth layer. Operating charts for a suitably adapted version of the model are compared with experimental results obtained with a laboratory flotation column. Experiments were conducted with a two-phase liquid–bubble flow. The results indicate good agreement between the predicted and measured conditions for steady states. Numerical simulations for transient operation, in part for the addition of solid particles, are presented.
Subject headings
- NATURVETENSKAP -- Matematik (hsv//swe)
- NATURAL SCIENCES -- Mathematics (hsv//eng)
Keyword
- drainage
- drift flux
- froth flotation
- mathematical model
- numerical simulation
- partial differential equation
- steady state
Publication and Content Type
- art (subject category)
- ref (subject category)
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