southern AFRICA news
Johan Goosen has been appointed managing director
of Osborn Engineered Products SA. Goosen
joins Osborn from Atlas Copco, where he managed
Drilling Solutions and, in his most recent role of
regional business line manager, was responsible for
Mining and Rock Excavation Services. During his
time with the firm, Goosen exceeded financial targets
despite the challenging market, and made significant
contributions to increasing the business’s market share
and improving customer relations. “Johan has a very
good understanding of our industry and its challenges,”
says Richard Patek, group president of Osborn’s parent
company, Astec Aggregate & Mining. “We are delighted
to welcome him to the Osborn family.”
MSA Africa has launched its new ALTAIR 4XR multi-gas
detector for use in markets including industrial, mining
and oil and gas. The four-gas monitor with MSA XCell
Sensors can sense gas two times faster than the industry
average, according to the company, and provides real-time
event notification using Bluetooth connectivity. Paired
with the MSA ALTAIR Connect app, it can immediately
text alarm notifications to specified users. A MotionAlert
option informs others whenever a user has become
immobile, while the user-activated InstantAlert notifies
of a potentially dangerous situation. The detector comes
with a four-year instrument and sensor warranty, and has a
military-grade rating (MIL-STD-810G) and an IP68 dust and
waterproof rating.
Osborn supplies unique plant to Rossmin mine
Osborn has supplied a R27-million turnkey crushing
and screening plant to Rossmin opencast limestone
mining operation in Port Shepstone.
Equipment manufacturer Osborn
has supplied a R27-million
turnkey crushing and screening
plant for Umzimkhulu Industrial
Holdings’ Rossmin opencast
limestone mining operation in
Port Shepstone, on the KwaZulu-
Natal South Coast.
According to product sales
manager Shane Beattie, this
new plant features a unique
process designed by Osborn to
minimise fines generation in the
production of calcite and lime.
“The plant was designed and
installed to produce only two
sized products: 80mm+30mm
and -30mm+10mm. The -10mm
is a by-product,” Beattie
explains. He reveals that the
process is revolutionary in
that a conventional crushing
plant would be a jaw and cone
configuration to crush down to
a -80mm product from a run of
mine (ROM) of 600mm.
“We supplied an Osborn
modular 3042 jaw plant feeding
into an Osborn modular 2340
jaw plant, then over an Osborn
modular 6 × 20 triple deck
screen, splitting the product into
-80mm+30mm, -30mm+10mm
and a -10mm+0mm,” says
Beattie. “The primary reason
for the two-stage jaw crushing
process is to minimise the
generation of fines (-10mm).”
According to Beattie, Osborn’s
pioneering process is more
effective than the conventional
separation process where all ROM
material is crushed to -1mm and
smaller, and then flotation is used
to remove the impurities. “This
process requires lots of water and
waste that is more difficult to
manage,” he asserts.
Umzimkhulu and Rossmin
will only process the high-grade
material, up to 99% calcite,
says Beattie. “Since this stage is
the most expensive part of the
process, by only crushing the
desired calcite, the operation
will be able to dramatically
reduce its cost per ton, and the
capacity in this stage will be
used to its fullest potential.”
Osborn also supplied the
mine’s next stage with its
imported high-frequency
screens. The equipment
supplied was transported to
KwaZulu-Natal in 22 loads, and
the scope of Osborn’s contract
included the supply, installation
and commissioning of the
primary plant. “This order
has been some three years in
the making. We devoted the
necessary time to understanding
our client’s requirements, and
we are proud to have delivered
a truly unique and optimal
solution,” says Beattie.
QUARRY SA | MAY 2017 _ 5