CHAPTER
10
MECHANICAL SEPARATIONS
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Introduction
The
velocity of particles moving in a fluid
terminal
velocity
drag
force drag
coefficient terminal
velocity magnitude.
SedimentationStokes'
Law
Gravitational
Sedimentation of Particles in a Liquidzones
velocity
of rising fluidsedimentation
equipment
Flotation
Sedimentation
of Particles in a Gas
Settling
Under Combined Forces
Cyclones-
optimum shapeefficiency
Impingement
separators
Classifiers
Centrifugal
separations
Rate
of separation centrifugal
forceparticle
velocity
Liquid
Separationradial
variation of pressure
radius
of neutral zone
Centrifuge
Equipment
Filtrationrates
of filtrationfilter
cake resistance
equation
for flow through the filter
Constant-rate
Filtration
Constant-pressure
Filtrationfiltration
graph
Filter-cake
Compressibility
Filtration
Equipment
Plate
and frame filter press
Rotary
filters
Centrifugal
filters
Air
filters
Sievingrates
of throughputstandard
sieve sizes
cumulative
analysesparticle
size analysis
industrial
sievesair
classification
Summary.
Problems.
Examples in this
Chapter:
10.1.
Settling velocity of dust particles
10.2.
Separating of oil and water
10.3.
Centrifugal force in a centrifuge
10.4.
Centrifugal separation of oil in water
10.5.
Centrifugal separation of milk and cream
10.6.
Volume of filtrate from a filter press
10.7.
Sieve analysis
Figures in this
Chapter:
10.1
Continuous-sedimentation plant
10.2
Cyclone separator: (a) equipment (b) efficiency of dust collection
10.3
Liquid separation in a centrifuge
10.4
Liquid centrifuge (a) pressure difference (b) neutral zone
10.5
Liquid centrifuges: (a) conical bowl, (b) nozzle
10.6
Liquid/solid centrifuges (a) telescoping bowl, (b) horizontal bowl,scroll
discharge
10.7
Filtration Graph
10.8
Filtration equipment: (a) plate and frame press (b) rotary vacuum filter
(c) centrifugal filter
10.9
Particle-size analysis
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