five existing Siwertell shipunloaders at
the 4200 MW facility. Three of the
unloaders were delivered in 2001 and
two in 2006. This latest order was
booked in Cargotec's 3Q15 order intake.
Siwertell will deliver the
ST 940 DOB shipunloader on a turnkey
basis. Designed to unload coal from
vessels of up to 180 000 DWT at a rated
capacity of 2000 tph, it will replace an
existing grab crane. The steel structure
for the new unloader will be built in
China, while other parts will be
delivered from Europe. Final assembly
will take place onsite. Start of
operation is expected 1Q17.
Powering underground
mining vehicles
The first commercially-available
electric mining vehicles powered by
UQM Technologies’ explosion proof
PowerPhase
®
HD250 electric drive
system was presented by the
Keshi Group at this year’s China Coal
& Mining Expo in Beijing.
Colorado‑based UQM has entered into
a ten year production and supply
agreement to supply the Keshi Group
with electric drive sytems for its 3 – 4 t
personnel carriers and deep mining
vehicles. UQM has also received
follow-on purchase orders for
additional explosion-proof HD250 and
HD950T systems, for delivery this
autumn and early in 2016.
Equipment, technology
and services
Sandvik MB670 bolter miner
Continuing its development of
equipment for longwall mining,
Sandvik has launched its
Sandvik MB670-1 bolter miner to
increase productivity, reduce total cost
of ownership and improve safety and
ergonomics for operators, the
company said in a press release.
The Sandvik MB670-1 has been
developed in particular for longwall
mining applications and features a
fully-automatic cutting cycle that
results in constant and faster advances,
which the company said will shorten
panel development times in stable
ground conditions by up to 30% and
ensure smooth ground conditions.
“Our new Sandvik MB670-1 bolter
miner has an innovative sump frame
mechanism that incorporates cutting
and bolting, allowing coal cutting and
ground support installation
simultaneously,” explained
Bruno Reumueller, Product Line
Manager, Underground Coal and
Minerals, Sandvik Mining. “While the
machine is stabilised for installing the
ground support, the sump frame
mechanism continues to move
forward to cut out the next cycle. This
enables our customers to get more out
of their mine."
Retsch XL product range
Retsch GmbH has expanded its
product range with a complete line of
instruments for applications with large
feed sizes and high throughput rates.
The new range will be integrated into
the existing product line under the
name X-Large (XL) and will enable to
company to offer, for example, a series
of jaw crushers with feed sizes from
40 mm to 350 x 170 mm. The new
models of ball mills, vibratory disc
mills and sample dividers provide a
substantially higher throughput than
the laboratory-scale models. The new
portfolio also includes a number of
testing equipment to determine the
Bond Grinding Indices.The new
products will give Retsch access to
markets such as coal, steel and mining,
which until now could only be served
with laboratory instruments for small
sample volumes.
ARC MX1
A. W. Chesterton Co. has announced a
new ARC MX1 that “takes the
combination of abrasion and impact
resistance in a ceramic reinforced
epoxy lining to a new level,” the
company said in a press release.
Along with one of the highest
packing density of ceramics in the
reinforced ceramic epoxy market,
Chesterton’s R&D innovation team has
reformulated this flagship product to
resist repetitive high impact, as well as
extreme sliding abrasion forces. High
impact and sliding abrasion forces are
commonly associated with materials
handling systems, such as chutes,
hoppers, pneumatic and hydraulic
conveyance systems and pipe elbows,
etc. To improve the impact resistance
of such a highly reinforced lining, the
company used a novel hybrid polymer
matrix to increase ductility and
toughness, while retaining the critical
cohesive properties required for
reliable performance in these
aggressive application areas.
MX1 can be applied at a nominal
6 mm and up film thickness after grit
blasting to a minimum of Sa 2.5/SP10
(Near White) cleanliness with a
75 – 125 μm angular profile. The new
MX1 can resist more than 68 NM of
force, has tensile pull off adhesion
values of 4200 psi per ASTM D4541,
and slurry abrasion response number
of 1778 per ASTM G75, surpassing
other conventional ceramic modified
epoxy linings by 25% or more.
LoaderMetrics 2.0
Motion Metrics has launched
LoaderMetrics 2.0, including Missing
Tooth Detection and Blind Spot
Reduction capabilities, as well as
thermal camera imaging, artificial
intelligence and deep learning and
lens cleaning system.
The Missing Tooth Detection
monitors bucket teeth conditions.
When a tooth is detected missing, the
system alerts the operator and
prevents the tooth from reaching and
jamming downstream crushers.
Meanwhile, Blind Spot Reduction
features a series of cameras on the
loaders’ exterior, providing real-time
surveillance views of their
surroundings. In doing so, dangerous
collisions can be avoided.
The decision to use thermal
cameras was made for a number of
reasons, most importantly to improve
system accuracy and precision. Given
the short amount of time (less than
one second) the system has to capture
a clear image of the bucket teeth as
the bucket dumps to the truck, a
thermal camera focuses solely on
bucket teeth and is unaffected by
differing backgrounds and the
buckets contents. Additionally, the
system operates accurately at night
without the need for a light and
through dirt and debris on the camera
lens and bucket.
54
|
World Coal
|
December 2015
