MechChem Africa June 2017

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June 2017 • MechChem Africa ¦ 37
⎪ Products and industry news ⎪
A complete range of electric and pneu-
matic internal and external vibrators
from OLI is available locally from leading
supplier, Bearings International (BI). “OLI
is the world’s top-selling manufacture of
electric andpneumatic vibrators,” BI prod-
uct manager, Lewis Hiepner, comments.
OLI has three main divisions offering
optimal solutions for all requirements.
Industrial Vibrators focuses on vibrating
equipment, Flow Aids looks at problems
of flowability, andConcreteConsolidation
specialises in reliable and efficient con-
crete compaction.
With a centrifugal force of up to
26 000 kg, and with multiple voltage op-
tions, the OLI range is suited for a range
of applications, from food and beverage
to mining, foundries and recycling. Motor
bodies, bearing flanges and shafts are
designed using FailureModes and Effects
Analysis (FMEA), a step-by-step approach
for identifying all possible failures in a de-
sign, manufacturing or assembly process.
The use of premium-grade aluminium
alloy, cast iron and steel alloy means that
the OLI range is ideal for heavy-duty ap-
plications, with safeoperationguaranteed
in any conditions. Vacuum-impregnated
windings and Class F insulating materials
enhance reliability and durability.
Complete range of electric and pneumatic
vibrators available
Top-quality bearings and an efficient
grease-retaining system assure long-
lasting performance and a low noise level
during operation. Easy fine-tuning of the
maximum centrifugal force provided by
the motor is made possible by adjustable
eccentric masses. The OLI range includes
several certifications for use in hazardous
environments, therebymatching themost
demanding specifications worldwide.
“It is part of our strategy of being a
total solutions partner for our custom-
ers instocking someof thebest products
and brands from around the world, and
OLI definitely falls into this category,”
adds BI business unit head: product and
engineering, Ross Trevelyan.
The OLI range is suited for a range of
applications, from food and beverage to mining,
foundries and recycling.
Victaulic pipe joining:
an alternative to pipe
welding
The demand for skilled
welders inSouthAfrica is
much higher than the
number of welders
who are available
andthisoftenforces
the industry tomake
use of imported skills.
The shortage also continues to hamper
large-scale capital expansion projects such as
Eskom’s Medupi power station.
Boiler piping is very specialised and we need
to use the best boilermakers to do those welding
jobs, but new technology means that welding is
not the only technology suitable for utility piping.
Victaulic trainsworkers to joinutilitypiping, using
bolted mechanical couplings.
Mechanical pipe joining was born from the
idea of replacingweldingwith a cleaner and safer
alternative. Most demanding industries still hold
the perception that pipe-coupling technology
can be used only on a temporary basis, but this
not the case. Victaulic offers a permanent, safe,
and cost-effective alternative to using flanges or
welding. The systems are accessible simply by
removing two bolts from a coupling, making it
easier tomaintain efficient systemperformance.
This reduces labour costs, pollution, energy us-
age, potential health and safety risks as well as
drastically reducing the time necessary to install
and maintain these connections.
Further, the design allows for controlled pipe
movement within the couplings, while maintain-
ing a positive seal and a self-restrained joint.
The design allows for expansion, contraction
and deflection generated by thermal changes,
building or ground settlement and seismic activ-
ity. Additionally, since Victaulic couplings are
designed to provide engineered movement at
the joint – unlike welded, flanged or threaded
joints – the couplings minimise noise and vibra-
tion transmission generated by pumps or other
equipment to the piping system.
The Victaulic system allows for training and
up-skilling to the extent that these skills in local
workers could eventually satisfy local demand
and even be exported. In an era when skills
development and job creation remain of crucial
importance to our economy, we need to start
thinking innovatively and challengeoldmind-sets
if we want to succeed in genuine empowerment
and job creation.
Leading wet processing company CDE
showcased 25 years of international ex-
pertise toNigerianandotherWestAfrican
mine and quarry operators at theConMin
West Africa trade show in Abuja from 13
to 15 June.
The global company introduced the
significant benefits of materials washing
technology to the sand and aggregates
industry, demonstrating how businesses
can expand by increasing both their range
of products and production levels, as well
as make profits and a quick returns on
investment.
Globally, CDE boasts the successful
completion of over 1 000 sand and aggre-
gates wet processing projects, including
the largest sandwashingplant in theworld
in Qatar, which processes 1 200 t of dune
sand per hour.
Nicolan Govender, regional manager
Africa at CDE, says: “Whilst washing ba-
sically comes as a result of crushing and
screening, it is a specialised and niche
market. Wet processing is much more
specific than crushing and screening be-
cause it entails getting frommillimetre to
micron sizes.
“With the respective successes deliv-
ered by CDE’s EvoWash and AquaCycle
products, more operators are now choos-
ing theCDECombo, whichcomprisesboth
plants. The Combo, with a capacity range
from30 to 200 t, boasts a uniquemodular
design to combine feeding, grading, wash-
ing, water recycling and stockpiling onto
one compact chassis.
CDE Combo sand washing at ConMin
Dar es Salaam-based Estim Construction
installed a CDE Combo ×70 in 2014, which
produces 40 t per hour of quality washed sand,
whilst recycling up to 90% of the wastewater.
“TheCombo is soefficient that thefinal
product is ready to be sold directly from
the belt, so Combo customers have never
looked back,” Govender reports.