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Several Applications
The wet classifier may perform several applications
·
Separation
of
fine
particles
and
liquid
from
coarse
particles
·
Separation
of
light
particles
from
heavy
particles
·
Separation
of
the
particles
into
a
number
of
products
graded
according
to
size
·
Separation
of
liquid
from
solid
particles
·
Optimal particle
size
range 800
to
75 microns
Tank Designs
for
Optimal
Performance
These
classifiers
are
designed
to
provide
the most
effective
pool
area
and
overflow
velocity
requirements.
By
combining the
proper
submergence
of the
spiral with
one of
the tank designs a
choice
of 63
combinations
is possible
in Straight,
Modified
or
Full
flare
options.
The
proper
combination of
pool
depth,
area
and
spiral
construction
is important
to
secure
a
controlled
turbulence in
the
slurry
flow
for
accurate
size
separation.
Easy to
Operate
and Maintain
The
classifier
spiral
is
easily
raised
for
start-ups,
shut-downs
and
periodic
inspections
or
maintenance.
For
the
smaller
units,
up
to
900
mm
diameter,
a
handwheel-operated
screw
device
is
standard.
For
the
larger
machines
the
spiral
assembly
is
raised
and
low-
ered
by
an electro-mechanical
lifting
device.
The
overflow
weir, which
varies the
spiral submergence
and
pool
area
consists
of
removable
weir
bars located
in a
guide
channel
at
the
overflow
end.
The
drive
unit
and
the
submersible bearing
of
the
spiral,
the
two
critical parts
of the
machine are designed
for
hard
continuous
operating
conditions.
An
optimal
lubrication
system,
automatic
as
option, is
securing the
function
of these
vital part.
Service
and maintenance
of these
parts and the
wear
parts
of
the spiral is
simple
to carry
out.
Heavy Duty Rugged Construction
The tank is a rigid, well supported unit of continuous, welded construction.
A minimum of intermediate foundation supports are required.
Spirals are supplied in sizes from 300 mm up to 2200 mm diameter.
Pre-formed, sectionalised steel flights from a continuous spiral helix.
Available in single and double pitch configuration, single or duplex. Abrasion-resistant, replaceable shoes protect the working face of the flights from wear.
Polyurethane shoes are
standard. Chrome iron and Ni-hard are available as options. |