BULK
HANDLING Endorsed by: CMA l LEEASA l SAIMechE l SAIMH
MONITORING OF DRIVELINES ELECTRA MINING REPORT-BACK
T O D A Y
October 2016
Perfect Conveyor Belt Solutions for the Power Generation Industry Requirements in the Power Generation Industry can differ greatly. Conveyor Belts have to stand the test in widely diverse work environments, from ship or train unloading, over internal transportation, storage, incinerator feeding to ash return and desulfurization. ContiTech offers complete solutions in premium quality, from textile, steel-cord, solid woven and special-purpose belts through to service materials and services.
conveying excellence
+27 (0) 11 248 9300 www.contitech.co.za
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ENDORSER OF “BULK HANDLING TODAY”
LIFTING EQUIPMENT ENGINEERING ASSOCIATION OF SA
• A recognised ECSA Voluntary Association (VA) •
LEEASA is a fully-fledged association devoted to the lifting industry across Southern Africa. Members hale from the crane, forklift, mobile elevated work platform, aerial and suspended access platform, chain hoists, rigging and lifting tackle arenas, etc. Primarily devoted to the LMI’s (Lifting Machinery Inspectors), and LME’s (Lifting Machinery Entities), the association considers safety paramount. As such it serves in an advisory capacity to the SABS, the Department of Labour, various training bodies and the industry at large. LEEASA is recognised by ECSA as a voluntary association. What’s in it for you:
As an Individual member who is registered as a Lifting Machinery Inspector (LMI), you may qualify for any concessionary fee granted by ECSA (this could save you over R1 000 a year).
and other training courses accredited by the association attract ECSA CPD points.
ECSA registered LEEASA members are awarded one Continuing Professional Development (CPD) credit each year. CPD is an ECSA requirement to retain registration.
Members benefit from the collective power of a recognised and established association and collective co-ordination in dealing with authorities in policy making and matters concerning the industry.
Members obtain a discount on LEEASA seminars. Both these
LEEASA has some 500 members (Individuals and Companies).
• • •
LEEASA Occupational Health & Safety Act and Regulations LEEASA Mine Health & Safety Act and Regulations LEEASA Lifting Equipment Inspection & Legal Compliance Register
Available for purchase online at www.leeasa.co.za
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LIFTING EQUIPMENT ENGINEERING ASSOCIATION OF SOUTH AFRICA Head Office: 8 Boris Road, Bordeaux, Randburg, Johannesburg P.O.Box 2348, Pinegowrie. 2123, Republic of South Africa Tel: 074 900 8378 • www.leeasa.co.za Secretary: Arni Sommer • email: arni@leeasa.co.za
BULK HANDLING TODAY
February 2012
Jay Pillay
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Miners want to know that when they return, that particular chain block will still work; and that corrosion has not seized the mechanism
Martiens Opperman, operations manager at Renttech and Adele van Zyl, rigging product manager at Renttech
Lifting Solutions That Work. TorreLifting_657_adv_BulkHandlingToday_180x30.indd 1
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The overload system is an extremely vital and effective safety measure, providing peace of mind that the equipment cannot be misused beyond its correct and safe capacity
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October 2016
Marc Kleiner, MD Condra
Well known for being able to meet deadlines that rival firms cannot, sometimes completing manufacture in less than half the time requested by competitors
Foreground: Part of one girder leaving Condra’s factory last week; Background: Two completed girders with road transport standing by. All girders are part of the two 60-ton portal cranes ordered by Stefanutti Stocks for its pre-cast yard in Port Elizabeth
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Palfinger are committed to delivering equipment solutions to Africa where they are implementing a growth strategy
Projects are still ongoing but there are definitely longer lead times at play
Innovation is the name of the game, like the aerial lifting platform that can be fitted onto a standard 4x4 bakkie
Offering a range of lifting solutions has become a leading name in the local market
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We truly believe we have the world’s best on offer, but it can be challenging to compete with cheap imports of lesser quality
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► EIA Process
► Environmental Risk Assessments
► Geographical Information Systems
► Agricultural Assessment and Advise
► Project Managment
► Wetland and Riparian Services
► Natural Resource Services
► Visual Impact Assessments
► Ecological/Biodiversity Services
► Public Participation Process
► Application Assistance
► Game Ranch Management
► Developement Research, Monitoring and Evaluation
N2 Mnini ECO Duties
Plant rescue
Durban Coal Terminal Site Inspection
Ohlanga Pump station ECO Duties
Freightpak Warehouse Site Audit
Public participation Makhabeleni
Ballito Interchange Botanical survey
Site assessment Sundumbili pipeline
l Tel: (031) 303-2835 l Fax: 086 692 2547 l l Email: info@afzelia.co.za l www.afzelia.co.za l Skills on Site
Septmeber 2012
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Truck Driving Health Challenges
Physical Reality – Line-Haul Driving
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Lack of exercise
15 000 to 20 000kms per month, no control over hours of operational service, and kilometre-driven incentive programmes leave no space for exercise
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Poor diet – pap & vleis
Low-quality roadside meals: starch, sugar, fat and salt dominate
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Succumbing to snack and sweet-tooth temptations
Vehicle stops are well stocked with every type of sweets, salty snacks and soft drinks
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Bad eating habits – one or two large meals/day
Glucose levels spike with bad eating habits
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Obesity
Not overweight – just obese
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Stress
Increasing traffic, poor-quality sleep, meeting scheduled delivery demands, all heighten stress
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Hypertension
This is commonplace and generally not tracked for control
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HIV
HIV has not gone away.
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Smoking
Smoking causies heart failure
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Massive variety of sweet soft drinks
10 teaspoons of sugar per soft drink can, multiplied by 4 cans/day is 40 teaspoons of unneeded sugar or 164gms
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BULK HANDLING TODAY
October 2016
Ben van Zyl, Acusolv South Africa
Figure 1. Example of noise spectrum measured at 1m distance from a conveyor with steel rolls, running at 4.5m/s
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Figure 2. Field tests of conveyor noise as a function of speed. Standard steel rolls spaced 1.8m; no canopy. Noise levels averaged over a 50m length of line at 3m distance
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noise impact, this is a substantial reduction, considering that a 9dB reduction in sound power would shrink the noise footprint of a conveyor by a factor of eight. For example, by not taking atmospheric and ground cover losses into account, a conveyor producing a certain noise level at a distance of 1 000 m when running on standard steel rolls would produce the same level at 125m if the rolls were replaced with rounded (machined) steel rolls. With HPDE rolls the reductions were even greater, with Type A and Type B rolls producing 15dB and 21dB less noise respectively, compared with the standard steel rolls tested in this case. Idler
Noise level At 1 m [dBA]
Advantage Noise level relative to standard steel roll [dB]
Steel Standard
91
0 dB (Reference)
Steel Rounded
82
- 9 dB
HPDE Type A
75
- 15 dB
HPDE Type B
70
- 21 dB
Table 1. Noise levels measured at 1m distance from a conveyor fitted with different roll types on 100m sections of line. Conveyor speed 6.5m/s
Conventional Housing
The noise emission characteristics of overland conveyors are affected by the type of housing. Conventional partially open housings or canopies do not reduce the overall sound power, but they do modify the radiation pattern, for instance, the directional spread of noise. Conveyor directivity is relevant in solving noise problems in EIA modelling of conveyors and in considering measures to mitigate conveyor noise impact in new developments. Based on the results of numerous field tests, Figure 3 illustrates the effects of the most common configurations on a conveyor’s radiation characteristics. With an open conveyor (no canopy) as reference (0dB), the tendencies are found to be as follows: n
Figure 3. Typical directional characteristics of conventional conveyor canopies
Doghouse Canopy
A conventional doghouse canopy, open at the front, screened at the top and at the back with steel cladding, usually with a gap at the bottom, collects and projects most of the noise towards the open side. This causes the noise level on the open side to rise by 2–3dB, relative to an open conveyor. On the opposite (partially screened) side, the level is typically reduced by 4dB. n
Flat Roof Canopy
A flat roof canopy (both sides open) typically elevates the noise level on either side by 1–2dB relative to an open conveyor.
Canopy noise screening
Noise reduction on conveyor lines with conventional canopy designs is restricted by a fundamental flaw, that is, the structural integration of the canopy with the conveyor supporting framework. Because it is intimately coupled to the primary source of noise, structure-borne conveyor noise and vibration are transferred to the large canopy surfaces acting as efficient radiators of air-borne sound. When considering possible improvement of the noise screening provided by the housing, the first step would be to completely detach the housing from the conveyor support framework. A doghouse canopy, for example, may still be left open on the maintenance side, but should be supported on an independent BULK HANDLING TODAY
October 2016
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Figure 4 . Example of noise berm between an overland conveyor and a rural village
Tel no. +27 (0)10 210 4000 • flsm-za@flsmidth.com • www.flsmidth.com
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Lesley Masilo of Dirtwhacker
Johan Herbst, Janet Ashton and Tiaan Marx of Powermite
find out if you qualify to #joinourtable at pps.co.za PPS is an authorized Financial Services Provider.
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October 2016
Jaco Greyling of MegaRoller
Simone Ferriani of Cometto
Sean Hale of Pro Crane Services
Jonathan Thiel of Sureguide
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Coralynne & Associates +27 (011) 849 3142
ABSOLUTE MATERIAL FLOW CONTROL
ABSOLUTE MATERIAL FLOW CONTROL
• Optimum material flow • Up to 80% decrease in material degradation • Reduced dust and noise levels • Virtually maintenance free • Greatly reduced spillage • Significant reduction in belt damage
TM
SOUTH AFRICA
Phone: +27 (0) 11 827 9372 Email: info@webachutes.com
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Your boutique business destination Surrounded by lush gardens in the hub of Johannesburg’s northern suburbs, The Peartree in Craighall Park caters for groups of two through to 100 guests in nine well-appointed and equipped business suites. Breakfast meetings, working lunches, indoor or outdoor dining, half-day and full-day packages including all welcome refreshments, teas and lunches are offered in Standard, Gold and Platinum packages. Secure parking, business centre, fibre optic broadband AV, lockable space, and an onsite Hair & Beauty Boutique, all underpinned by highly qualified and helpful staff dedicated to ensuring your event is a success, make The Peartree a destination of choice.
www.thepeartree.co.za e-mail: info@thepeartree.co.za Tel: 011 781 1401 41 St. Albans Ave, Craighall Park
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Figure 1. Kubria cone crusher
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CRUSHING
Figure 2. Main components of the Kubria cone crusher
The use of the flatter cone angles in the F/M crushers means a particularly high-quality product can be achieved
Figure 3. Kubria G type
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Kubria F/M type
CRUSHING
Figure 4. Flowsheet for a three-stage crushing plant for the crushing of granite
Figure 5. Typical product gradation curves of Kubria cone crushers based on crusher setting
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www.promech.co.za * * * * *
Easy navigation through the site Comprehensive archive Free to users No registration Searchability
BULK
HANDLING IN AFRICA
G U I D E
2016
Endorsed by: CMA | LEEASA SAIMechE | SAIMH
BULK
HANDLING Buyers
Guide
Also publishers of “Bulk Handling Today”
2 0 1 5 2 0 1 6
BULK
HANDLING Endorsed by: CMA l LEEASA l SAIMechE l SAIMH
LIFTING Guide 2016/17
Also publishers of “Bulk Handling Today”
WORLD’S LARGEST ARTICULATED HAULER LOADING ORE SKIPS l Lifting l Conveying l Crushing l Trucking l Storage l
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T O D A Y
September 2016
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Kwatani and Derrick Corporation have partnered to drive best screening practice in the African mining sector
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DRIVING TECHNOLOGY DELIVERING PRODUCTIVITY Sandvik Mining minimises your safety risks, operational interference and site construction time by pre-assembling shiploaders. This ensures that only a short installation and commissioning period is required to get a port operating again. Our shiploaders are designed to cater for a range of products loaded onto vessels ranging in size from Handymax to Panamax and incorporate a built-in dust collection system and dust-free loading chute.
For enquiries, please contact +27 (0) 11 657 4600 MINING.SANDVIK.COM
A trusted industry leader For 90 years, SCAW, a South African industry leader, has been a preferred supplier to the lifting and rigging industry. From wire & strand products, Haggie® Steel Wire Rope, chain products aswell as fittings and attachments, Scaw continues to design and deliver the highest quality products to customer specifications. Highly qualified teams with extensive experience in all aspects of the application of our products are on call to advise and support the selection, handling, installation and maintenance of products vital to driving safety, productivity and profit in the lifting and rigging industry.
www.scaw.co.za
Proud Manufacturers of Haggie Products & McKinnon Chain
Experience Matters.