PRODUCT News
60
MODERN MINING
July 2014
Index to advertisers
Alco-Safe
54
AMEC
17
APE Pumps
53
B&E International
14
Babcock
42
Barloworld Equipment
55
Barloworld Power – Lighting Towers
2
Barloworld Power – Cat
22
Bell Equipment Co
7
bme
OBC
Booyco Electronics
51
DRA Mineral Projects
9
Flexicon Africa
11
I-Cat Environmental Solutions
49
Joy Global Africa
16
Krohne
59
M&J Engineering
36
Marthinusen & Coutts
58
MDM Engineering
33
Met Group
IFC
MMD Mineral Sizing Africa
57
Multotec Group
45
PANalytical
56
Sandvik Mining
52
Schneider Electric
IBC
Sedgman
15
Simantel (Caterpillar)
13
SRK Consulting
5
Tenova Delkor
30
Veyance Technologies
OFC
Voith
43
WorleyParsons
19
Zest WEG Group
37
Transfer points into mill feed or scrubber
feed chutes are traditionally high wear and
high maintenance installations. However,
this need not be the case. By correctly con-
trolling the feed into the scrubber or mill
feed, it is possible to reduce wear and tear,
and consequently maintenance.
The transfer point into the scrubber or
mill feed is critical as this area is subjected
to high velocity, and the speed of the prod-
uct is directly linked to the wear and tear.
Problems can arise because of the very
nature of the operation. The material is fed
into the mill or scrubber chute with a large
quantity of water that is required for the
milling process. Additionally, if it is a ball
mill, then the balls are also fed through the
chute into the mill itself.
Traditionally, mills are lined with either
cast high chrome, manganese or rub-
ber liners, and even though mill chutes
may have similar lining materials applied,
these are not always sufficiently robust to
counter the excessive wear caused by the
uncontrolled discharge of materials.
Appropriate design use of the Weba
Cascade Chute configuration in the head
section of the chute will reduce the wear
and gain full control over the material.
“With this exacting design, clients will be
able to limit the impact into the lined feed
spout section where the water is intro-
duced through a separate flood box. By
gaining full control of the product flow
in the Weba chute, customers can greatly
reduce wear rates traditionally experienced
in the mill feed spout and reduce the asso-
ciated costs related to transfer points,” says
Mark Baller, MD of Weba Chute Systems.
Traditionally the mill feed spouts
are provided by the mill OEM supplier.
Through successes being achieved with
reduced maintenance costs and reduced
mill loading, end users are now replacing
the OEM-supplied spouts with customised
Weba Chute Systems.
Weba Chute Systems’ pragmatic
approach to the dynamics of bulk mate-
rials handling not only eliminates the
problems so often associated with con-
Mill feed chute control simple withWeba
The transfer point into the scrubber or mill feed is
critical as this area is subjected to high velocity,
and the speed of the product is directly linked to
the wear and tear.
ventional transfer chutes, but also results
in significant savings.
“EachWeba Chute System is tailor made
for its specific application and factors such
as belt width, belt speed, material par-
ticle size and shape as well as throughput
are taken into account during the design
phase,” Baller says.
Achieving the optimum design for
each application remains the objective at
all times.
The Weba Chute System is completely
different in its approach to handling and
controlling the material. “The Weba Chute
System uses a ‘supertube’ with a cascade
effect, where 95 % of the material runs on
material at the same time,” Baller says.
“When viewed in slow motion, what
becomes apparent is that the bottom layer
of particles in the product stream moves
in a tumbling motion and does not glide
down the chute – product runs on product.
It is this design concept that significantly
reduces wear. This concept is taken fur-
ther by designing the internal angle of the
transfer chute to match the product with
the belt speed, and in this way spillage is
either completely eliminated or greatly
reduced,” he explains.
Mark Baller, M & J Engineering, tel (+27 11) 827-9372
Scribante Mining adds TowerLights to its fleet
Scribante Mining Africa recently added an
additional four VT8 8 m TowerLights to its
existing fleet of mobile lighting towers sup-
plied by Pilot Crushtec International. This
latest acquisition brings the number of
units it has in service to 20.
According to Pilot Crushtec International’s
National Sales Manager, Nicolan Govender,
Scribante – which has a number of opera-
tions working either two shifts or 24/7 – is
becoming increasingly favourable towards
TowerLight products owing to their superior
lighting abilities and rugged construction.
“Scribante is using the VT8 8 m version
which has four 1 000 kW lamps mounted
on an 8 m retractable tower powered by an
inboard diesel generator. The four new units
were purchased when Scribante won a ten-
der to repair and maintain haul roads for a
major opencast coal mine,” he says.
Govender adds that Scribante has been
impressed not only by the unit’s double-
axle trailer, which is road legal for towing
purposes, but by the durability of its light-
ing filaments which have proven to be
exceptionally robust in service compared
to competitive offerings.
Pilot Crushtec International, tel (+27 11) 842-5600
