A fluid-mechanic-based model for the sedimentation of flocculated suspensions

Journal Article · Fri Feb 01 00:00:00 EST 1991 · Separation Science and Technology; (United States)

DOI:https://doi.org/10.1080/01496399108050468· OSTI ID:6039852

Chhabra, R P; Prasad, D ^[1]

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1. Indian Inst. of Tech., Kanpur (India)

Due to the wide occurrence of the suspensions of fine particles in mineral and chemical processing industries, considerable interest has been shown in modeling the hydrodynamic behavior of such systems. A fluid-mechanic-based analysis is presented for the settling behavior of flocculated4d suspensions. Flocs have been modeled as composite spheres consisting of a solid core embedded in a shell of homogeneous and isotropic porous medium. Theoretical estimates of the rates of sedimentation for flocculated suspensions are obtained by solving the equations of continuity and of motion. The interparticle interactions are incorporated into the analysis by employing the Happel free surface cell model. The results reported embrace wide ranges of conditions of floc size and concentration.

• OSTI ID: 6039852
• Journal Information: Separation Science and Technology; (United States), Vol. 26:2; ISSN 0149-6395
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
SUSPENSIONS
FLOCCULATION
HYDRODYNAMIC MODEL
SEDIMENTATION
CHEMICAL INDUSTRY
EQUATIONS OF MOTION
FLUID MECHANICS
HYDRODYNAMICS
MATHEMATICAL MODELS
MINERAL INDUSTRY
PARTICLE SIZE
PARTICULATES
QUANTITY RATIO
DIFFERENTIAL EQUATIONS
DISPERSIONS
EQUATIONS
INDUSTRY
MECHANICS
PARTIAL DIFFERENTIAL EQUATIONS
PARTICLE MODELS
PARTICLES
PRECIPITATION
SEPARATION PROCESSES
SIZE
STATISTICAL MODELS
THERMODYNAMIC MODEL
010800* - Coal
Lignite
& Peat- Waste Management
320303 - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Equipment & Processes