| ATTRITOR |
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HOW ATTRITOR WORKS
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| How
an Attritor Works ? |
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The operation of a batch
attritor is simple and
effective. The material
to be ground and the
grinding media are placed
in a stationary, jacketed
grinding tank.
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Commonly
used grinding media
types are stainless
steel, chrome steel,
tungsten carbide, ceramic,
or zirconium oxide.
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The
material and the media
are then agitated by
the shaft with cross
arms, rotating at high
speed.
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This
causes the media to
exert both shearing
and impact forces on
the material, resulting
in optimum size reduction
and dispersion.
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No
premixing is necessary.
The material can be
directly fed into the
jacketed grinding tank
of the mill.
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The final result of
the grinding action
is a fine, even particle
dispersion.
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Temperature
control (either cooling
or heating) can be maintained
with the use of jacketed
tanks.
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| How
the Continuous Attritor Works
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The continuous
mill has a compact
vertical design
suitable for continuous
production of
large quantities
of materials.
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Premixed
slurry is pumped
through the bottom
and discharged
at the top of
a tall, narrow
jacketed tank
with internally
agitated grinding
media.
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The
fineness of the
processed material
depends on the
time the material
stays in the grinding
chamber ("dwell"
time).
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Dwell
time is controlled
by the pumping
rate. The slower
the pumping rate,
the longer the
dwell time and
the finer the
grind.
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The
grinding media
used in continuous
grinding mills
range in size
from 2mm to 10mm
in diameter
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