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• W4313448514 endingPage "1190" @default.
• W4313448514 startingPage "1151" @default.
• W4313448514 abstract "Froth flotation is a common unit operation used in mineral processing. It serves to separate valuable mineral particles from worthless gangue particles in finely ground ores. The valuable mineral particles are hydrophobic and attach to bubbles of air injected into the pulp. This creates bubble-particle aggregates that rise to the top of the flotation column where they accumulate to a froth or foam layer that is removed through a launder for further processing. At the same time, the hydrophilic gangue particles settle and are removed continuously. The drainage of liquid due to capillarity is essential for the formation of a stable froth layer. This effect is included into a previously formulated hyperbolic system of partial differential equations that models the volume fractions of floating aggregates and settling hydrophilic solids [R. B{u}rger, S. Diehl and M.C. Mart'i, {it IMA J. Appl. Math.} {bf 84} (2019) 930--973]. The construction of desired steady-state solutions with a froth layer is detailed and feasibility conditions on the feed volume fractions and the volumetric flows of feed, underflow and wash water are visualized in so-called operating charts. A monotone numerical scheme is derived and employed to simulate the dynamic behaviour of a flotation column. It is also proven that, under a suitable Courant-Friedrichs-Lewy (CFL) condition, the approximate volume fractions are bounded between zero and one when the initial data are." @default.
• W4313448514 created "2023-01-06" @default.
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• W4313448514 date "2022-12-01" @default.
• W4313448514 modified "2023-10-18" @default.
• W4313448514 title "A degenerating convection–diffusion system modelling froth flotation with drainage" @default.
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• W4313448514 doi "https://doi.org/10.1093/imamat/hxac033" @default.
• W4313448514 hasPublicationYear "2022" @default.
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