2015/02 - Bullk Handling Today

BULK

HANDLING

T O D A Y

February 2015 Endorsed by: CMA l LEEASA l SAIMechE l SAIMH l

PRELIMINARY DESIGNS ACCELERATED CHAIN SAFETY IN THEORY AND PRACTICE 1 BULK HANDLING TODAY February 2012

BULK HANDLING TODAY

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The South African Institute Of Materials Handling

SAIMH

The South African Institute of Materials Handling (SAIMH) is a Non-Profit organisation set up with an objective to encourage the transfer of knowledge associated within the fields of Bulk Materials Handling (conveyors, stacker, reclaimers, tipplers, train loading systems, etc.) through a combination of seminars and networking sessions. The SAIMH is made up of professional engineers, each practising their trade in a variety of organisations who volunteer their time to execute the SAIMH’s objective. The main aim is thus to promote the advancement of the art, science, theory and practice of the Bulk Materials Handling principles and techniques.

For the SAIMH and the industry as a whole to prosper requires the support of companies such as yours and key individuals from within your organisation who share the same passion and vision within the Bulk Materials Handling industry. The advantages of being a corporate member of the Institute are as follows: • To make the industry aware of the professional standards that our members provide, • To encourage the interchange amongst members of the institute of knowledge, experience relating to all aspects of the bulk materials handling, • To promote education, training to all levels of employees within the industry, To introduce and encourage the utilisation of leading world class material handling methods and techniques, • To be able to transfer and obtain additional knowledge at the bi-monthly joint Forum lectures, • To be able to communicate through the monthly official journal (which is sent to member free of charge).

These are just a few of the advantages that you will benefit from by being a corporate member. Just give us a few minutes of your valuable time and view our website, www.saimh.co.za, or email us on saimh@global.co.za and we will assist with your enquiry.

MEMBER COMPANIES Afripp Projects cc Bateman Engineered Technologies Bearings International (Pty) Ltd Brelko Conveyor Products (Pty) Ltd Bulkcon CPM Engineering CT Systems cc Conveyor Watch (Pty) Ltd David Brown Gear Industries (Pty) Ltd Deebar Mining & Industrial Supplies East Rand Engineering Services ELB Engineering Services (Pty)Ltd Engicon Systems (Pty) Ltd Facet Engineering cc GMR Hydraulics Goba Consulting Engineers Group Line Projects (Pty) Ltd Hagglunds Drives SA (Pty) Ltd Hansen Transmissions SA (Pty) Ltd Hatch Africa (Pty) Ltd Illustech

Kimrae Engineering Projects Macsteel VRN Martin Engineering Melco Conveyor Equipment Morris Materials Handling SA (Pty) Ltd Osborn Engineered Products (Pty) Ltd PD Engineering Services cc PDNA M&I (Pty) Ltd PH Projects Holdings (Pty) Ltd Quadrant PHS Renold Crofts (Pty) Ltd Rio Carb (Pty) Ltd Sandvik Materials Hanlding Africa Screw Conveyors & Material Handling Senet SEW Eurodrive Shatterprufe a Div. of PG Group Pty Ltd Spar Western Cape Super Dock Systems Unitek Engineering Zest Electric Motors (Pty) Ltd

PO Box 1047 Southdale, 2135

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SAIMH Golf Day 11 October 2012 ERPM Golf Club

Tel: (011) 867 0902 Fax: (011) 867 0036

saimh@global.co.za • www.saimh.co.za BULK HANDLING TODAY

UPCOMING MEETINGS

February 2015

Simon Curry

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Without the installation of a back channel cooling system, a significantly higher heat load from the drives accumulates in the substation, requiring a more complex air conditioning system and higher power costs

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LIFTING EQUIPMENT ENGINEERING ASSOCIATION OF SA

LEEASA, formed in 2003, is a division of the Chamber of Engineering Technology (COET), a non-profit organisation. The association’s objectives include, but are not limited to: the transfer of knowledge and training within the field of the Lifting Industry, to improve safety, promote the use of standards and to promote Professional and Ethical practices.

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t is represented on the Engineering Council of South Africa (ECSA) and a number of ECSA committees as well as on various task teams at the South African Bureau of Standards (SABS).

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).

ECSA registered COET / LEEASA members are awarded one Continuing Professional Development (CPD) credit in category

3 each year. CPD is an ECSA requirement to retain registration.

Members obtain a discount on training and seminars validated by the association, especially useful in earning ECSA CPD credits.

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.

LEEASA has some 500 members (Individuals and Companies).

Tel/Fax: (011) 787-1302, Email: engineer@netactive.co.za, www.leeasa.mirrorz.com 8

BULK HANDLING TODAY

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A rotary valve inlet flange

Norman Guthrie, general manager of Wam Group South Africa

A loading bellow

Trough cover and chain drive

Extra heavy-duty tubular screw conveyor

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Global Leaders in Bulk Materials Handling

n Hundreds of complete systems and equipment supplied globally n Offer feasibility studies to turnkey and project-managed materials handling contracts n African projects include n Mozambique coal sector n One of the longest single flight belt conveyors in the southern African region n The largest number of Rapid Train Loading Systems and dome covered circular stockpiles in southern Africa Tenova TAKRAF is a key supplier of equipment and systems for open pit mining & underground solutions, materials handling and mineral processing to the global mining and general industries

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58 Emerald Parkway Road, Greenstone Hill Ext 21, Johannesburg 1609, South Africa +27 11 201 2300 enquiries.TMM@tenova.com www.tenova.com

BULK HANDLING TODAY

February 2015

TENOVA is a worldwide supplier of advanced technologies, products and engineering services for the metals and mining & minerals industries

FCB CAPE TOWN 10008448CT/E

Keeping Africa running smoothly.

Engen is committed to an African success story. In Africa, industries operate under extreme conditions different from any other place in the world. That’s why we do more to develop our tailor-made range of lubricants. We use top-of-the-line technology and only the best ingredients. The result is an advanced technology product that meets industry requirements and reliability expectations. And our dedicated team on the ground ensures that you have access to what you need when you need it.

Contact the Engen Customer Service Centre (CSC): +27 21 403 5090 or visit www.engenoil.com.

10008448CT Engen_Africa Print Ad_Bulk Handling Today_176x130E.indd 1

BULK HANDLING TODAY

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Southern African

28th & 29th May 2015

Metals and Engineering INDABA Engage

EMPERORS PALACE

Contribute

Innovate

Sustain

Introducing the inaugural Southern African Metals and Engineering Indaba, a two-day conference scheduled for 28-29 May 2015 at Emperors Palace, Kempton Park, South Africa. The most inuential and knowledgeable leaders and key policy makers will address the conference and present impressive insights not to be missed. The conference will focus on cutting-edge issues related to our industries and also present numerous opportunities for networking and socialising with Government leaders, opinion formers and business leaders drawn from our various sectors. Exhibitors will get the chance to showcase their products in a high-volume trafďŹ c area offering maximum exposure to key decision makers within the industry.

REGISTER TODAY FOR ONLY R7500 INCL. DINNER (EX VAT)

For ticket bookings, and further opportunities to sponsor or exhibit at the event, visit www.meindaba.co.za

SPONSORED BY

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BULK HANDLING TODAY

4326 Wetpaint Advertising

POWERED BY

OFFICIAL MEDIA PARTNERS

February 2015

Peter Taylor, Belting Supply Services, Sindzisa Mbhalati, Hudaco, Mark Tarboton, Bosworth, Rowan Michelson, Deutz Diesel Power, and Donovan Marks, Powermite were guest speakers at the recent joint forum of the South African Institute of Materials Handling (SAIMH) and the Conveyor Manufacturers Association of South Africa (CMA)

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Book Now for the 2015 Upcoming Features April 2015 \ \ Power Transmission \ \ Comparative survey on lifting- who’s who in lifting \ \ Intermodal & Breakbulk \ \ Earthmoving & plant hire MAY 2015 \ \ Conveying \ \ Crushers, screens, chutes, liners \ \ Trucking & Transport \ \ Bulk Storage JUN 2015 \ \ Lifting equipment \ \ Power Transmission \ \ Earthmoving & plant hire \ \ Project Management and Mining

Contact Surita Marx Tel (011) 781-1401, or E-mail: bulkhandling@promech.co.za to book your advertising space

SKF South Africa - Celebrating 100 Years of Innovative Solutions

OEM Industry Solutions In the material handling business, it really is about moving large amounts of goods effectively with profitability. To help achieve these objectives for manufacturers and operators alike, SKF offers an extensive range of products and services for heavy and medium duty conveyors, crane, gearbox and other mining applications.

Drawing on experience and extensive application knowledge in these industries, SKF can help keep your material handling equipment running as effectively and efficiently as possible.

SKF South Africa is celebrating 100 years of innovative solutions during 2014.

Drawing on five areas of competence and application-specific expertise (bearings and units, seals, lubrication systems, mechatronics and a wide range of services), SKF brings innovative solutions to OEMs and production facilities in every major industry worldwide.

The Power of Knowledge Engineering SKF South Africa (Pty) Limited Tel: +27 11 821 3500, Fax: +27 11 821 3501 Email: sales.za@skf.com, Web: www.skf.co.za

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EMERGING OPPORTUNITIES IN THE WORLD’S FASTEST GROWING CONTINENT

EARLY BIRD DELEGATE DISCOUNT SAVE AT LEAST $200 IF YOU REGISTER BEFORE 17 JUNE 2015

Conference & Exhibition 15–17 July 2015 Cape Town International Convention Centre, Cape Town, Republic of South Africa www.powergenafrica.com | www.distributechafrica.com

For booth bookings and sponsorship enquiries, please contact:

Invitation to Participate POWER-GEN Africa and DistribuTECH Africa, will once again provide comprehensive coverage of the power needs, resources, and issues facing the electricity generation and transmission & distribution industries across sub-Saharan Africa.

Leon Stone Exhibition Sales International T: +44 (0) 1992 656 671 E: leons@pennwell.com

The events will feature multi-track conference sessions covering strategic, technical and renewable topics with practical solutions and benchmark case studies and concurrent exhibition floor featuring prime movers showcasing the very latest equipment and technologies.

POWER-GEN Africa and DistribuTECH Africa have quickly established themselves as sub-Saharan Africa’s leading events that cover the full power spectrum from supply to delivery, focusing on the current and future trends, as well as the needs and resources within this region of the world.

Andrew Evans Exhibition Sales Africa T: +27 (0) 21 930 9515 E: andrewe@pennwell.com

Nowhere else provides you with the opportunity to reach and meet over 3,000 high-level industry professionals in one place, allowing networking, business and sales opportunities with key industry buyers and influencers from around the continent.

To register and obtain further information, visit www.powergenafrica.com or www.distribtuechafrica.com Owned & Produced by:

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Host Utility:

BULK HANDLING TODAY

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Presented by:

Supported by:

Supporting Association:

February 2015 20/11/2014 09:59

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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

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Skills on Site

Septmeber 2012

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iii

i

iv

Figure 1. Conveyor drive

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T 3.0

f base 2.0

Load torque

1.0

0

n1

n2

n3

n4

n5

n6

n7

n

n8

Figure 2. VVVF torque vs speed curves Speed [n] Quadrant ii Positive Speed Negative Torque

Quadrant i Positive Speed Positive Torque Torque [T]

Quadrant iii Negative Speed Negative Torque

Quadrant i Negative Speed Positive Torque

Figure 3. Four quadrants of VSD operation

sp µ √T

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Figure 4. Gear teeth stress with torque

Figure 5. Fatigue life of low alloy carburised gears with nominal stress 2

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Air Speed over unit [m/s]

Heat transfer coefficient [kW/(m2째C)]

2,5

0,015

5,0

0,024

10,0

0,042

15,0

0,058

Table 1. AGMA heat transfer coefficient for fan-cooled gear units Percentage of Motor Nominal Speed

Thermal Rating of unit [kW]

Absorbed Power of Motor [kW]

100

84.0

76.5

75

60.8

56.2

50

35.2

37.5

25

17.9

18.8

Table 2. Thermal rating of a speed reducer for variable speed application

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Figure 6. Oscillating torque induced fatigue shaft failures

Figure 7. Electrically induced bearing pitting Percentage of Motor Nominal Speed Wheel Tangential Speed [m/s] 100

5.85

75

4.39

50

2.93

25

1.46

Table 3. Tangential gear speeds for a sample speed reducer

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Figure 8. Bearing fluting

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The ultra-safe, ductile, forged hooks with interlocking cast safety catches which are secured on both ends when engaged, include forged-in markings and traceability details

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Chain quenching tempers the chain to the required strength

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It is important to note that wherever chains are used, the associated safety standards need to be adhered to, both in theory and in practice

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V14628

Protect Your Belt Conveyors with Voith Fluid Couplings.

The Voith Fluid Coupling, type TVVS, is predominantly used in belt conveyor drives.

The coupling protects the drive against overload and dampens torsional vibrations. This protects your system and increases its productivity.

Key Benefits: • Very smooth start-up • Torque limiting up to 140% of nominal load • Automatic adjustment to different load states info.vtza@voith.com Tel: +27 11 418 4000 www.rsa.voithturbo.com

V14727 Voith MM Bulk Handling HP DH3 FEB15.indd 1

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2014/12/10 2:37 PM

Mike Dexter, Managing Director of Multotec Wear Linings

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MEET THE FAMILY Book Now for the 2015 Upcoming Features

Our combination of multi-faceted handling equipment means that Linde machines are perfectly equipped for big jobs, small jobs and everything in between. With our comprehensive logistical know how, Linde has fast become the industry symbol for superior quality, seamless functionality and innovation. Available to lease, rent or on hire purchase, investing in Linde machines ensures the remarkable efďŹ ciency of each member of our family.

JUL 2015

\ \ BELTON \ \ Conveying \ \ Intermodal & Breakbulk \ \ Harbours, ports, shipping & railways \ \ Trucking & Transport

AUG 2015 \ \ Lifting equipment \ \ BAUMA CONEXPO \ \ Project Management and Mining \ \ Earthmoving & plant hire

SEP 2015 \ \ Power Transmission \ \ Conveying \ \ Intermodal & Breakbulk \ \ Bulk Storage

Linde Material Handling

For more information on Linde dealerships, products and services contact us on Tel : +27 11 723 7000 or visit www.linde-mh.co.za

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Contact Surita Marx Tel (011) 781-1401, or E-mail: bulkhandling@promech.co.za to book your advertising space

Hugo van Zyl

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MARKET FORUM

Matthys Pretorius (Postmasburg Manager, Kathu Esco Corporation), Rias Rabie (Branch Manager, Kathu Esco Corporation) and Gus Kruger (General Manager, IHS Forklifts) alongside the new CHL 10-ton diesel forklift

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MARKET FORUM

A close up of the JumboFlex which facilitates one-handed operation

6,600 m 3/h Tenova Takraf Bucket Wheel Excavator at Zhahanaoer open pit mine in China

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MARKET FORUM

A portable tripod and a boatswain’s chair from Elephant Lifting Equipment. The tripod can be used for lifting/lowering goods/ people into and out of places where they are required to work – for example, when a worker is required to clean out underground fuel tanks at a petrol station

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MARKET FORUM

The work cell combines all the elements necessary to generate mixed, coloured urethane with the forming and curing process.

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MARKET FORUM

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MARKET FORUM

Mark Houchin

Log onto www.promech.co.za to read this issue on-line

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