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- W1981346004 abstract "• Parabolic air profiles by measuring local radial gas velocity in flotation cells. • Sample point representing average superficial gas velocity in flotation cells. • Relationship of parabolic air profiles and frother concentration in flotation cells. Bubble surface area flux has proven to be a key operational variable in flotation machines not only for diagnosis but also for optimization purposes. It is calculated as a combination of two gas dispersion properties, superficial gas velocity and bubble Sauter mean diameter. Since gas is not necessarily distributed evenly over the cross sectional area of a cell the sampling point where gas dispersion properties are measured must be carefully selected. This article illustrates that a radial parabolic gas velocity profile exists in mechanical cells, in some cases with significant variation in gas velocity as a function of radial distance from the center. An optimal sampling location for single point gas dispersion measurements in mechanical flotation machines is proposed." @default.
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- W1981346004 date "2014-10-01" @default.
- W1981346004 modified "2023-10-14" @default.
- W1981346004 title "Measuring gas dispersion parameters: Selection of sampling points" @default.
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- W1981346004 doi "https://doi.org/10.1016/j.mineng.2014.05.001" @default.
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