3. OPERATION
3.5E Screening Selection / Combinations
The top plate or screen is used to
absorb the impact of heavier material and
discharge or separate the larger material to
a separate pile.
The bottom screen further separates
materials and dictates the actual final size
of product.
The correct combination of screen sizes
will produce the desired size of material
quickly and efficiently (S0001). Results;
high yield.
A top screen with too small an opening
will process material inefficiency and
usable material will be lost to waste.
(S0002). Results; low yield.
A top screen with too large an opening,
or if the bottom screen size is small, will
clog the bottom screen (S0003). Results;
low yield.
Proper loading technique is also impor-
tant for efficient operation. Slowing the
feed rate into the hopper will allow more
time for the material to separate.
Situations when the lower screen deck
continues to clog, a larger bottom screen
may need to be used and the material run
through a second time with a smaller
screen. This may prove to be more effective
than slowing the feed (dumping) rate exces-
sively.
24
S0001Proper screen selection
Top screen selection too small
Top screen selection too
large, bottom too small
S0003
S0002
To Next Page
Loading...