Page 36 - HUB-4 Magazine Issue 90

Crushing & Screening
Crushing and screening is
an easy job……
Maybe so if you are working on clean, easily
processed materials. This was not the case for
Yorkshire based Utley Plant Hire when they
were asked to supply a machine to process
hundreds of tonnes of material which had been
tipped as a waste product at a recycling centre
on the outskirts of Manchester.
Operating a state-of-the-art wash plant, cleaner material was
screened and cleaned to provide a wide range of recycled
aggregates whilst the pile of material facing Tom Utley was
gradually getting larger and larger. After weeks and weeks of
trials with a range of jaw, and impact crushers, with very little
progress being made thanks to the material’s high soil and
clay content, the site was getting ready to forget the potential
recycling of this material. “We were getting a lot of clogged
up equipment!” Tom explains. “I scoured the market looking
for alternatives and whilst I found some really large-scale kit
which was well out of our price range and too big for the site,
we found a potential solution in the EvoQuip Caiman 150 from
Molson Green.”
hydrostatic drive, the torque rating of each shaft is an
unbelievable 80,000Nm allowing them to tackle any material
with ease. Thanks to the variable speed of the shafts,
controlled by the remote control in the excavator operator’s
cab, the material is steadily worked on. The asynchronous
crushing action ensures the shafts continually work the
material ensuring production is maximised. Whilst the material
prior to processing was only fit for landfill, following being
worked on with the Caiman, the material resembles a
stabilised product which can then be fed into the adjacent
wash plant. “Where the conventional crushers we tried were
producing around 50 tonnes per hour because of the regular
blockages, the Caiman is consistently producing in excess of
120 tonnes per hour.” Tom commented. “We have now been
The Caiman 150 is one of 33 models of compact crushing and
screening equipment designed and built by Terex in Northern
Ireland. The Evoquip range fits into the Molson crushing and
screening portfolio perfectly complementing the larger Finlay
range.
Unlike traditional jaw, impactor, or cone crushers, the Caiman
150’s design is more akin to that of a waste shredder. In fact, it
does have a dual purpose of being able to cost effectively
shred waste material doubling its versatility.
The compact machine weighs just 16.5 tonnes and is easily
transported between sites on the back of an 8x4 hook lift.
With a transport length of 8.4m and a width of just 2.5m, the
Caiman is an ideal solution for operators wanting a powerful
and productive compact shredder/crusher.
Once transported to site, it takes just a few minutes to set up
the Caiman with the main body and conveyor extended ready
for work. Powered by a Stage V, CAT C4.4 diesel, the Caiman
uses a hydrostatic drive unit to provide unbeatable power to
the twin shredding shafts. Material is placed into the 1.8m x
2.6m, 2.5m3 hopper where the 1.5m long, 250mm diameter,
aggressive C&D shafts process the product. Thanks to the
| p36 |
www.hub-4.com Jan/Feb - Issue 90