Page 21 - HUB-4 Magazine Issue 90

Recycling
The Terex Ecotec Phoenix 3300 is
the largest trommel available
within the Ecotec range with an
operating weight of just over 37.5
tonnes. Sitting on a 3-axle chassis,
the trommel is delivered using a
fifth wheel mounting to connect it
to a suitable tractor unit. With a
travel length of just over 21m, the
Phoenix 3300’s delivery through
the tight and winding Scottish
roads took some planning by the
Molson team to ensure it arrived
without a scratch and caused as
little delay to the local traffic as
possible.
Once on site and set up, a relatively quick and straightforward
task, the trommel could be set to work. The 3300 is available
with either a heavy duty tipping grid or double deck vibrating
grid to feed material into the drum. Like any trommel, the
Phoenix 3300 is available with a range of screening media to
produce any given products. Boyd Brothers have chosen six
different sections of woven mesh ranging from 13mm to
20mm to give two consistent products suitable for a variety of
construction product manufacture and horticultural uses.
Depending on the media used, the trommel can quickly be
reconfigured to work effectively with heavy construction and
demolition waste or in the production of high quality
composts.
The design of the trommel uses a high capacity, 7.8m3
hopper to receive the material. Mounted at one end of
the heavy duty chassis, the hopper gradually
feeds the material into the 2.32m diameter
drum via a variable speed belt feeder. The material is sent into
the 9.32m long drum which has been fitted with a variety of
woven mesh which gradually segregates the material into two
grades. The -15 grade passes through the mesh and onto a
1200mm wide discharge conveyor passing it back through to
the hopper side of the machine. The 180° swivel fines
conveyor can eject material to a maximum height of almost
6m allowing it to generate large uniform stockpiles leaving the
wheel loader to concentrate on loading duties.
The large capacity drum is driven by a powerful four-wheel
drive system with high performance friction grip wheels and
allows the operator to run the drum in either direction. To
ensure no chips stick and block the mesh, a series of nylon
brushes stretch the length of the drum ensuring the mesh is
always clean. The large chips pass out of the drum onto the
1200mm wide outfeed conveyor. Like the fines conveyor, this
one is capable of being remote controlled and with variable
speed control, the operator can create a pile of material
exceeding 4m.
Power to the trommel comes from a Caterpillar StageV diesel
which combines with powerful hydraulics and auto feeder
speed control to guarantee the machine is always working at
its optimum level.
With such a high output, Boyd Brothers have employed a pair
of wheeled loaders to handle the input and out put of
products. The smaller machine with a 6m3 bucket spends most
of its time loading the Phoenix whilst a larger machine with
8m3 bucket handles the screened material and also the
loading of Boyd Brother’s high capacity ejector trailer which
ferry the material from the production area to the quayside.
‘We have been very pleased with the performance of the
Phoenix since it arrived.’ Boyd Brother’s Gary Isherwood
commented. ‘We have reduced our cost per cube to screen the
material whilst massively increasing the output with a better
product. Molson have been a great company to deal with
delivering the product quickly and efficiently and giving us the
ability to exceed both our and our customer’s expectations.’
www.hub-4.com Jan/Feb - Issue 90
| p21 |