Analysis of the performance of large-diameter ball mills at Bougainville using the population balance approach

1988 ◽  
Vol 5 (4) ◽  
pp. 221-226 ◽  
Author(s):  
Y. C. Lo ◽  
J. A. Herbst
Keyword(s):  
Large Diameter ◽  
Population Balance ◽  
Ball Mills ◽  
Balance Approach

CFD-based modeling of precipitation by supercritical anti-solvent process of microparticles from grape pomace extract with population balance approach

2018 ◽  
Vol 133 ◽  
pp. 519-527 ◽  
Author(s):  
F.A.R. Cardoso ◽  
R.V.P. Rezende ◽  
R.A. Almeida ◽  
N. Mezzomo ◽  
S.R.S. Ferreira ◽  
...  
Keyword(s):  
Population Balance ◽  
Grape Pomace ◽  
Balance Approach

Numerical Simulation of Droplet Size Distribution in Vertical Upward Annular Flow

2010 ◽  
Vol 132 (12) ◽  
Author(s):  
Y. Liu ◽  
W. Z. Li
Keyword(s):  
Size Distribution ◽  
Droplet Size ◽  
Annular Flow ◽  
Liquid Droplet ◽  
Large Diameter ◽  
Droplet Size Distribution ◽  
Population Balance ◽  
Balance Model ◽  
Diameter Distribution ◽  
Two Fluid

The liquid droplet size distribution in gas-liquid vertical upward annular flow is investigated through a CFD (computational fluid dynamics)-PBM (population balance model) coupled model in this paper. Two-fluid Eulerian scheme is employed as the framework of this model and a population balance equation is used to obtain the dispersed liquid droplet diameter distribution, where three different coalescence and breakup kernels are investigated. The Sauter mean diameter d32 is used as a bridge between a two-fluid model and a PBM. The simulation results suggest that the original Luo–Luo kernel and the mixed kernel A (Luo’s coalescence kernel incorporated with Prince and Blanch’s breakup kernel) can only give reasonable predictions for large diameter droplets. Mixed kernel B (Saffman and Turner’s coalescence kernel incorporated with Lehr’s breakup kernel) can accurately capture the particle size distribution (PSD) of liquid droplets covering all droplet sizes, and is appropriate for the description of liquid droplet size distribution in gas-liquid annular flow.

Experience With Large Diameter Ball Mills at Bougainville Copper Ltd.

1984 ◽  
Vol 1 (1) ◽  
pp. 15-22 ◽  
Author(s):  
R. S. Burns ◽  
J. G. Erskine
Keyword(s):  
Large Diameter ◽  
Ball Mills

A NONLINEAR POPULATION BALANCE APPROACH TO WET BALL MILL SCALE-UP DESIGN

1984 ◽  
Vol 2 (2) ◽  
pp. 121-134
Author(s):  
E. M. SANCHES ◽  
J. A. HERBST ◽  
Y. C. LO
Keyword(s):  
Ball Mill ◽  
Scale Up ◽  
Population Balance ◽  
Mill Scale ◽  
Balance Approach

Modelling Flocculated Cell Suspensions using a Population Balance Approach: Applications to Microfiltration

2002 ◽  
Vol 752 ◽  
Author(s):  
S. Ranil Wickramasinghe ◽  
Binbing Han ◽  
Saengchai Akeprathumchai ◽  
Xianghong Qian
Keyword(s):  
Distribution Function ◽  
Size Distribution ◽  
Volume Fraction ◽  
Particle Diameter ◽  
Population Balance ◽  
Balance Model ◽  
Floc Size ◽  
Balance Approach ◽  
Fragment Distribution ◽  
Log Normal

ABSTRACTExperimental results for flocculation of yeast and CHO cells using cationic polyelectrolytes are presented. These results suggest the existence of a self-similar floc size distribution. The experimentally determined floc size distributions have been modelled using a population balance approach. For flocculated yeast suspensions, the variation of the floc volume fraction with dimensionless particle diameter is predicted by the population balance model assuming a binary fragment distribution function. However, for CHO cell flocs, the floc volume fraction is predicted using a log normal fragment distribution function. Since the efficiency of unit operations such as microfiltration may be improved by flocculation of the feed suspension characterization of the particle size distribution is of great importance.

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