FEATURE
BREAKING THE BOTTLENECKS
EFFICIENT SCREENING IS KEY TO HIGH-QUALITY, MULTIPLE-PRODUCT
OUTPUT AT CALLANAN INDUSTRIES.
By Carol Wasson
CHALLENGE:
Maximizing screening
capacity without losing
quality and efficiency.
SOLUTION:
Screening circuit upgrades
utilizing Deister screens.
TIP:
The double���deck approach
on the high���speed screens
allows greater stratifica���
tion between the decks.
W
hile everyone wants more
tons per hour across the
screen, the key to optimum
screening is maximizing capacity with���
out losing quality and efficiency. Vi���
brating screens must be properly
selected, designed and applied ��� and
must be operated under the correct
parameters. If not, screening circuits
may become big bottlenecks.
Do the math. A screen operating at 75���
percent of total efficiency allows 25���
percent of material within the desired
product size range to be rejected with
the oversize material. Bottom line,
18 ROCKproducts ��� DECEMBER 2012
that means that production goals and
profit margins are falling through the
cracks.
When Callanan Industries faced the
recent relocation of its Ravena, N.Y.,
crushing operation to South Bethle���
hem, the company seized an opportu���
nity to make key upgrades to an
18���year���old plant. Now dubbed as
Callanan���s South Bethlehem Plant 2, in
South Bethlehem, N.Y., the relocated
facility is on track to produce up to
one million tpy of crushed stone with
its beefed���up crushing, screening and
washing operations.
www.rockproducts.com