A hydrodynamic simulation of mineral flotation. Part I: the numerical model

Darcovich, K.

doi:10.1016/0032-5910(94)02959-r

Cited by 6 publications

(4 citation statements)

References 19 publications

(30 reference statements)

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“…Mineral flotation is a complex liquid-solid-bubble process, which is very difficult to be explained by a single flotation simulation. Many flotation simulations proposed by researchers are the empirical model [18,19,20]. Dobby and Finch [21] developed hydrodynamic collision models.…”

Section: Hydrophobic Energymentioning

confidence: 99%

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Role of reactive oily bubble in apatite flotation

Zhou

Wang

et al. 2017

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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The effect of fatty acid reactive oily bubble as a carrier in apatite flotation is examined by zeta potential, zeta potential distribution, induction time and micro flotation experiments, and further analyzed by the extended DLVO theory. The surface property of fatty acid reactive oily bubbles is determined by the dissociation degree of fatty acid contained in the oil film covered on reactive oily bubbles. Induction time tests show that the fatty acid reactive oily bubble presents a strong collecting power to apatite particles among pH 4.0-11.2, which is also confirmed by the zeta potential distribution and micro flotation experiments. However, the DLVO theory is fail to predict the coagulation at pH 9.01. A hydrophobic interaction is considered in the coagulation between reactive oil bubbles and apatite particles. The superiority of fatty acid reactive oily bubble system was confirmed and illustrated by the extended DLVO theory successfully.

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Section: Hydrophobic Energymentioning

confidence: 99%

“…and Eq (18),. the relationship of pH oil and the dissociation degree of fatty acid is given as the following: investigate the relationship between the zeta potential of reactive oily bubbles and the dissociation degree of fatty acid, Eq (19). and Eq.…”

mentioning

confidence: 99%

Role of reactive oily bubble in apatite flotation

Zhou

Wang

et al. 2017

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…This is consistent with the findings of this work. This result would be manifested by the reduced residence time in the cell due to buoyancy forces, and by being less subject to the turbulent mixing which determines the collision rate according to the equation of Bischofberger and Schubert [18] as discussed in Part I of this series [19].…”

Section: A Discussion Of Flotation Kinetics Modelingmentioning

confidence: 99%

“…It was based on existing TURCOM code [16,17]. Full details of its formulation and implementation are given in Part I [19] of this paper.…”

Section: Numerical Flotation Simulationmentioning

confidence: 99%

A hydrodynamic simulation of mineral flotation. Part II: surface chemical effects for coal-oil agglomerate flotation

Darcovich

Capes

1995

Powder Technology

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Oil-agglomeration prior to flotation has proven to be a very effective means of waste fine coal recovery. Existing data on the surface properties of coal-oil agglomerates were used as input parameters for a turbulent, three-phase, computational fluid dynamics simulation of a flotation cell. The flow field in the cell was resolved in two dimensions and the local hydrodynamic conditions were used as the basis for estimating bubble-particle collisions leading to particle collection and flotation recovery. The particulate surface tension as well as a quantity tied to the intrinsic material composition of each coal sample were used as parameters in deriving an expression for the flotation collection efficiency. This integrated simulation, taking into account both local hydrodynamic effects and the surface properties of the particulates was able to predict correctly flotation recovery trends for agglomerates of various coals across a range of oil levels.

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