Polymer flocculation of calcite: Experimental results from turbulent pipe flow

Heath, Alex R.; Bahri, Parisa A.; Fawell, Phillip D.; Farrow, John

doi:10.1002/aic.10729

Cited by 54 publications

(50 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…5,[15][16][17][18][19] The mechanical energy input to the inline static mixing process is reflected by pressure drop. The rate of energy dissipation is related to the mixer geometry and the material properties of the fluid, MFT in this case.…”

Section: Resultsmentioning

confidence: 99%

Scaling inline static mixers for flocculation of oil sand mature fine tailings

Demoz

2015

AIChE Journal

View full text Add to dashboard Cite

in Wiley Online Library (wileyonlinelibrary.com) Operations to reclaim mature fine tailings (MFT) ponds involve flocculation using high-molecular-weight polymers, for which inline static mixers are suited. Three different commercial static mixers were utilized to determine mixing parameters corresponding to optimal dewatering performance of flocculated MFT. MFT was treated with polymer solution under different mixing conditions. The dewatering rates passed through a peak with increasing mean velocity, V and Reynolds number, Re of the fluid. The greater the number of mixer elements, the lower the V and Re at which the peak dewatering rate occurred. Mixing parameters such as G-value, residence time, and mixing energy dissipation rate of the most rapidly dewatering flocculated MFT were dependent on mixer type and setup. In contrast, peak dewatering rates converged when scaled with respect to specific mixing energy, E, demonstrating that E is a suitable scale-up parameter for inline static mixing to produce optimally dewatering MFT. V C 2015 American Institute of Chemical Engineers AIChE J, 61: [4402][4403][4404][4405][4406][4407][4408][4409][4410][4411] 2015

show abstract

Section: Resultsmentioning

confidence: 99%

Scaling inline static mixers for flocculation of oil sand mature fine tailings

Demoz

2015

AIChE Journal

View full text Add to dashboard Cite

show abstract

“…The model was compared to Eq. (5) and experimental results reported in Heath et al (2006a). The collision efficiency found in the present paper considered capillary effects and therefore the simulation results were supposed to be physically credible.…”

Section: Introductionmentioning

confidence: 82%

The collision efficiency of liquid bridge agglomeration

Balakin

Kutsenko

Lavrukhin

et al. 2015

Chemical Engineering Science

View full text Add to dashboard Cite

“…The effect appears to be minor for unflocculated slurries (Tory and Shannon, 1965) but is more significant for the case where the thickener feed is flocculated. Although an effect might be expected for un-flocculated slurries based on the work of Channell and Zukoski (1997) using ceramic particulates in filtration, the fractal nature of flocculated aggregates from typical thickener feeds might be expected to yield greater changes in aggregate morphology upon the introduction of shear (Heath et al, 2006a). Although flocculated aggregates experience shear in the thickener feed-well, it is appropriate to consider shear effects post-formation, where there is no longer un-adsorbed flocculant and reformation of aggregates after breakage is unlikely.…”

Section: Article In Pressmentioning

confidence: 96%