Armstrong Grease Table
The Armstrong Grease Table is a relatively
light weight, large capacity machine with a large water
recovery and temperature control system.
For efficient grease recovery the following
factors must be adhered to:
Only good quality grease must be used.
Diamond test the grease before regular use.
The spray water and the grease must be
of the right temperature (22-24°C)
The spray water must be clean and
contain less than 100ppm solids.
The spray water must contain less than
10ppm combined Na and Mg.
The material fed over the grease screen
must be correctly sized i.e. 1-2mm, 2-4mm, 4-8mm,
8-16mm, 16-32mm fractions or smaller. This is so that
the largest non-diamond particles in the size fraction
will not dislodge the smaller diamonds. Larger non
diamond particles will also force smaller non diamond
particles into the grease if the variation in particle
size is too great.
The grease screen consists of a 1.5mm stainless
steel mesh screen tightly suspended between an outer steel
frame. The two vibratory motors are fitted to the sides of the
frame which allows the water from the spray bars to pass
directly into the underlying water tank for re-circulation. The
water tank is fitted with baffles to allow for sedimentation
and should be cleaned at regular intervals to prevent the build
up of solids in the water. The water tank is fitted with a
heater element and thermostat to control the water temperature
to within the required limits.
Grease is applied with a spatula from
underneath the screen through the screen cloth between the
screen bottom transverse support bars in segments 2 and 4.
Sufficient grease is forced through the screen so that the
grease protrudes to 1-3mm above the screen. The grease is then
smoothed over the surface as required to form a thin layer of
grease on top of the screen. This thin grease layer together
with any diamonds is easily removed with a spatula to leave a
clean remaining layer of grease on the screen surface. Further
grease is then forced up through the screen cloth using a
spatula to form a new clean layer of grease 1-3mm thick as