Rock to Road

Equipment Pits & Quarries
W.S. Tyler’s New XL Vibrating Screen


July 18, 2012
By Andrew Macklin


Topics

xl-class_1July 17, 2012, St. Catherines, ON —
The XL-Class Vibrating Screen
from W.S. Tyler combines
advanced exciter drive technology with a wide body to offer better screening
action and more throughput. Larger than any other vibrating screen from W.S.
Tyler, the XL-Class is intended for high tonnage production rates, yet designed
for low maintenance and easy operation.

xl-class_1July 17, 2012, St. Catherines, ON —
The XL-Class Vibrating Screen
from W.S. Tyler combines
advanced exciter drive technology with a wide body to offer better screening
action and more throughput. Larger than any other vibrating screen from W.S.
Tyler, the XL-Class is intended for high tonnage production rates, yet designed
for low maintenance and easy operation. Traditionally developed for copper and
iron ore, the XL-Class is suitable for almost any application.

Exciter drive technology ensures
smooth operation and high uptime. The linear stroke is generated by counter
weights, which are mounted on two machined shafts and spin in opposite
direction via two heavy-duty spur gears mounted in a nodule iron casting.
 This casting mounts to the rugged, reliable FEA (Finite Element Analyzed)
exciter bridge.  The bridge is the main exciter support, and transmits
dynamic force through the entire structure. The exciter design increases
bearing life up to 50,000 hours.

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The linear stroke is generated by
counter weights, which are mounted on two machined shafts that spin in opposite
direction via two heavy-duty spur gears mounted in a nodule iron casting.
 This casting mounts to the rugged, reliable FEA (Finite Element Analyzed)
exciter bridge.

The XL-Class offers large screening
surfaces, up to 390-square feet, allowing it to replace up to two inclined
screens in virtually the same footprint. This enables the XL-Class to
effectively handle production rates up to 15,000-tons per hour and cut sizes
from 1/4- to 5-inches with varying degrees of incline. In addition, the
XL-Class can be configured as a banana screen. The decks are sloped to increase
the speed of the material flow in order to further enhance production rates.
This approach is especially effective when the feed load contains a large
quantity of fines that are much smaller than the opening of the screen media.

The XL-Class has proven successful
for oil sands, which must be processed in temperatures ranging from -40C
degrees in the winter to +30C degrees in the summer.  With this extreme
temperature fluctuation, the material’s physical properties change from rock
like formations when frozen to a plastic like state in high summer temperatures.

To provide added strength, the
XL-Class features a rugged HUCK
-bolted
screen body fastening. Side plates are constructed with high-strength carbon
steel. The area surrounding the shaft assembly is strengthened with a
reinforcing plate, which ties together the side plate, screen panel and shaft
assembly.

The XL-Class machines are
engineered using Finite Element Analysis (FEA), which detects high vibration
and stress points, natural frequencies and harmonic responses. This allows W.S.
Tyler to set up each screen’s stroke, speed and other variables to perform at
peak efficiency and ensure it can handle extreme capacities.