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Note: All nominal
attrition mill output tonnages are based on
furan bonded sands. For alternate resin
materials, outputs are de-rated.
General
The CAR-Series
Mechanical Reclamation System is designed as a
complete no-bake sand reclamation system for
the cost conscious or low sand volume user.
The CAR features the same heavy-duty
construction featured on all Palmer equipment
at a fraction of the price.
The CAR
provides users with an inexpensive means of
breaking down no-bake lumps to usable grain
sized sand in an easy-to-use package.
The CAR-Series
System includes as standard the attrition
mill, classifier, and system controls.
 Attrition
Mill
The CAR-Series
Attrition Mill is a rugged, heavy-duty unit
that is designed to provide constant, reliable
reclamation, year after year. It is a top
loading mill that contains no cross bars or
grates that interfere with inspection of the
primary screen or removal of tramp metal,
gaggers, etc.
The attrition
mill utilizes a dual screen agglomeration
reduction system that is comprised of two
perforated steel plates. The first is located
in the top chamber of the mill and permits
only loose sand and small lumps to feed into
the bottom chamber. The second screen is
located at the discharge flange of the bottom
chamber. It allows only grain size sand and
some compound grains to exit the mill. Both
screens are replaceable.
The CAR
attrition mill utilizes a 3 phase vibrator
motor which is bottom mounted to provide
maximum agitation of the sand mass.
Classifier
 The
CAR-Series fluidized bed classifier is
fabricated from 1/4" steel and utilizes a
regenerative type blower for fluidization
pressure. The blower eliminates fluidized bed
membrane saturation problems associated with
the use of compressed air.
A 4"
diameter exhaust is provided for connection to
an existing dust collection system.
Sand that is
discharged from the classifier is ready for
use. The discharge of the classifier can be
configured for use with a bucket elevator or
vibratory transfer conveyor.
The classifier
is constructed from three major
components:
- A plenum
chamber into which fluidizing air is blown
by a blower.
- A fluidizing
screen made from 400 Mesh Stainless Steel
screen material
- A upper
chamber which serves as a cover and
pressure chamber
The plenum
chamber serves not only as a base, but also a
means of distributing the incoming air to the
underside of the fluidizing screen.
The fluidizing
screen is placed directly on top of the plenum
chamber flange and is held in place with the
upper chamber.
The upper
chamber is mounted on top of the base. It
serves not only as a cover, but also as a dust
collection chamber.
 The
fluidizing action of the sand assists in
polishing each grain, removing the fines
produced by the casting process and transport
of the sand. A negative pressure maintained
over the bed by a dust collector (supplied by
the customer) and controlled by a gate located
between the collector and the classifier
ensures that the fines are removed from the
chamber.
Fluidizing air
is provided by a regenerative blower that
includes an inlet air flow control.
Flanged
discharge and 4" dust collection take-off
are included on the classifier body.
 Controls
All electrical
controls are housed in a dust tight electrical
enclosure. Electrical control components are
based on the IEC standard of controls. Each
component is simply turned on or off as no
automatic interconnections are required due to
system simplicity.
System
Operating Requirements
- 240/480-V,
3-Phase
- Dust
Collection Required for Classifier - 400
CFM
Options
- Dust
Collector
- Load Chute
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The
CAR-Series is Palmer's lowest cost mechanical
reclamation system. Built around a heavy duty
attrition mill, the CAR is designed for
simplicity of operation and years of trouble
free service.
