ASTEC KPI-JCI User Manual

Vertical Shaft Impactor
45
Presizing Material
Before feeding material into
the Vertical Shaft Impactor, it
must rst be presized.
See page 41 for proper feed
size by impactor model.
Site Selection and Setup
Site Selection
When selecting a suitable
site for operation, many
factors need to be taken into
consideration. Selecting a site
without anticipating problems
could lead to unsatisfactory
operation and plant relocation
could be required.
Some things to consider when
selecting a site:
• Stability of the ground. If the
ground is too soft or
unstable, proper leveling
and loading may be
impossible.
• The crusher must be
located so ample room is
available. Leave plenty of
room around the plant to
facilitate access of loading
equipment, assembly of
crusher components and
service personnel.
• Proper drainage is
important to allow for runoff
of normal rainfall.
• Prevailing wind direction
and its effect on the
operator or loading
personnel.
Foundation
A properly constructed
foundation that is level is critical
for proper operation of the
vertical shaft impactor.
The discharge opening of the
crushermustbeguarded.
Feed Arrangement
It may be necessary to attach
the feed box and/or feed tube
to the vertical shaft impactor
before starting operation.
The feed box and/or feed tube
may need to be removed to
allow for service, cleaning and
inspection of the impactor.
A properly installed feed
assembly will provide even
distribution of material to the
opening of the vertical shaft
impactor.
The vertical shaft impactor
is generally used in a
closed circuit configuration
with a vibrating screen. KPI
recommends using a screen
to feed the VSI in order to lter
out material that is larger than
the recommended top size
and weight for the VSI.
When using the vertical
shaft impactor with any other
crushing component such as
a vibrating screen, feeder,
or conveyor, make sure that
enough clearance is available
Discharge Arrangement
Where possible, a shelf or
ledge should be constructed
to provide a bed of material for
the discharge material to hit.
This ledge will absorb most of
the impact before it falls on the
conveyor or discharge device.
Material must not be allowed
to buildup in the discharge
device. If material builds up to
the lower part of the crusher,
excessive wear and damage
to the crusher could occur.
CAUTION
NOTICE
Do not allow tramp material
such as drill bits or bucket
teethtoenterthecrusher.
Damage to internal castings
and machine components
mayresult.
Foundation drawings are
typically provided with the
crusher or can be obtained
from the factory. These
drawings also contain the
load information necessary
for constructing a proper
foundation.
to open and remove the lid
on the vertical shaft impactor.
The drop height should be no
less than 18”.

ASTEC KPI-JCI Specifications

General

Brand	ASTEC
Model	KPI-JCI
Category	Construction Equipment
Language	English