Sedimentation of high-solids-fraction suspensions

Technical Report · Sun Aug 01 00:00:00 EDT 1982

OSTI ID:5262451

Steinberg, R M; Mohiuddin, G

Settling velocities in batch sedimentation were obtained using /sup 57/Co-tagged cation-exchange resin beads in aqueous suspensions. The Richardson-Zaki correlation successfully predicted the settling velocity for the largest particle in a slurry. Smaller particles do not fall as fast as the Richardson-Zaki correlation predicts for their effective void fraction, but fall faster than predicted for the overall void fraction. A correlation was developed to express the settling rate of the smaller particles in a bimodal distribution of particle sizes as a function of a size-distribution mass weighting fraction. At viscosities greater than 10/sup -3/ Pa s (1 cp), particles fall slower than predicted by the Richardson-Zaki correlation; the settling velocity of the smaller particles in a slurry is retarded more at higher viscosities than at lower.

• Research Organization: Massachusetts Inst. of Tech., Oak Ridge, TN (USA). School of Chemical Engineering Practice
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5262451
• Report Number(s): ORNL/MIT-348; ON: DE82019725
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
SEDIMENTATION
KINETICS
SUSPENSIONS
COBALT 57
CORRELATIONS
EXPERIMENTAL DATA
ION EXCHANGE MATERIALS
PARTICLE SIZE
PARTICLES
RESINS
TRACER TECHNIQUES
VELOCITY
VISCOSITY
BETA DECAY RADIOISOTOPES
COBALT ISOTOPES
DATA
DAYS LIVING RADIOISOTOPES
DISPERSIONS
ELECTRON CAPTURE RADIOISOTOPES
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOTOPE APPLICATIONS
ISOTOPES
MATERIALS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
RADIOISOTOPES
SIZE
400105* - Separation Procedures