Avoiding shutdown
Voith Turbo has installed a TT Drive
on the H2 belt conveyor in the
Prosper‑Haniel coal mine, part of
RAG Deutsche Steinkohle, without
interrupting operations. It followed
this with the installation of another
TT Drive that resulted in sustained
cost reduction for the mining
company.
The Voith TurboBelt TT Linear
Booster Drive is a secondary drive for
belt conveyors. It extends the use of
belts in existing systems and increases
their available power. In new belt
conveyor systems, it reduces the
requirements on belt quality, leading to
considerable cost savings.
With the installation of the first TT
Drive, Voith made it possible for the
Prosper-Haniel mine to carry on using a
heavily damaged steel cord belt
(ST5000) until the next scheduled
downtime, preventing an unplanned
shutdown and corresponding
production loss. During the next
downtime, Voith installed a second TT
Drive in the H2 belt conveyor. This
allowed for a further reduction in belt
tension forces, enabling the
Prosper‑Haniel mine to operate the belt
conveyor with a cost-saving textile belt
(PVG2000/1).
“Voith's solution has provided us
with a dual benefit, said Project
Managers Ralf Dohle and Wolfgang
Kosiuk at RAG Deutsche Steinkohle.
“Not only did we manage to avoid an
unplanned shutdown because of the
damaged belt, we are now able to use a
textile belt instead of an expensive steel
cord belt for the system.”
Getting a handle
Siwertell has received an order from
PT Asahimas Chemical, a subsidiary of
AGC Asahi Glass, to provide coal
unloading and conveying equipment
for installation at its chemical plant site
in Cilegon, Indonesia, where it uses the
coal to generate power for the plant.
Siwertell will deliver an ST 790-D
shipunloader with a rated capacity of
1400 tph and two jetty belt conveyors.
The order also includes supervision of
the construction and commissioning
phase and spare parts appropriate for
two years of operation. The
components will be constructed in
Sweden and China and are scheduled
for delivery by June 2017.
“An increasing number of operators
around the world are appreciating the
virtually dust-free nature of our
unloaders, loaders and conveyors,”
said Pierre Öhrwall, Siwertell Sales
Manager. “For this client, extremely
clean coal handling is absolutely
essential, because any significant
amount of coal dust would have the
potential to contaminate the chain of
production processes at the chemical
plants. As an indicator of the
importance placed on cleanliness, the
coal stock is stored undercover.”
In the case of PTAsahimas Chemical,
the Siwertell systemwas “almost
self-selecting”, Öhrwall continued,
because of the importance placed on
environmental performance.
“Combining a Siwertell screw-type
unloader with Siwertell's
totally‑enclosed belt conveyors arguably
delivers the cleanest possible solution.”
Equipment, technology &
services
Within mining distance
Traditionally, highwalls are the area of
a quarry or opencast mine that expose
operators to the most risk. Using
Atlas Copco’s BenchREMOTE remote
operator station, drillers can now
Siwertell has received an order from PT Asahimas Glass to provide coal unloading and
conveying equipment to its chemical pant side in Cilegon, Indonesia.
60
|
World Coal
|
June 2016
