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BULK

HANDLING

T O D A Y


BULK

HANDLING

Copyright

All rights reserved. No editorial matter published in “Bulk Handling Today” may be reproduced in any form or language without written permission of the publishers. While every effort is made to ensure accurate reproduction, the editor, authors, publishers and their employees or agents shall not be responsible or in any way liable for any errors, omissions or inaccuracies in the publication, whether arising from negligence or otherwise or for any consequences arising therefrom. The inclusion or exclusion of any product does not mean that the publisher or editorial board advocates or rejects its use either generally or in any particular field or fields.

Our e-mail address is bulkhandling@promech.co.za Visit our website on www.promech.co.za

T O D A Y

The monthly circulation is 3 673

Proprietor and Publisher: PROMECH PUBLISHING Tel: (011) 781-1401, Fax: (011) 781-1403 E-mail: bulkhandling@promech.co.za www.promech.co.za Managing Editor: Susan Custers Advertising Sales: Lyn Patricio DTP: Anne Rotteglia Subscriptions: Please email us at accounts@promech.co.za if you wish to subscribe to “Bulk Handling Today” at R550,00 (excl postage and VAT) per year; R1 380,00 per year for Africa/Overseas. Printed by: Typo Colour Printing, Tel: (011) 402-3468 FSC (Forestry Stewardship Accreditation)

BULK HANDLING TODAY

June 2017

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The South African Institute of Materials Handling

Sample

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.

Company Affliates as at May 2017 Afripp Projects cc Brelko Conveyor Products (Pty) Ltd Bulkcon CPM Engineering CT Systems cc Conveyor Watch (Pty) Ltd David Brown Gear lndustries (Pty) Ltd ELB Engineering Services (Pty) Ltd Engicon Systems (Pty) Ltd Facet Engineering cc Flexco (SA) (Pty) Ltd

Hagglunds Drives SA (Pty) Ltd Hansen Transmissions SA (Pty) Ltd Hatch Goba (Pty) Ltd lllustech J & A Engineering Services Kimrae Engineering Prolects Loadtech Load Cells (Pty) Ltd MacsteelVRN Martin Engineering Melco Conveyor Equipment Morris Material Handling SA (Pty) Ltd

Osborn Engineered Products (Pty)Ltd PD Engineering Services cc PH Projects Holdings (Pty) Ltd Rio Carb (Pty) Ltd Sandvik Materials Handling Africa Screw Conveyors & Material Handling Senet SEW Eurodrive Spar Western Cape SSAB South Africa (Pty) Ltd Tenova Zest Electric Motors (Pty) Ltd

4 BULK TODAY 2017 Tel: (011)HANDLING 867-0902  Fax:June (011) 867-0036  Email: saimh@global.co.za  www.saimh.co.za


Martin Skeen receiving his award from Jay Pillay

BULK HANDLING TODAY

June 2017

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Minimum Wear Optimum Screening Maximum saving ELB Anti Wear Ceramic Tiles

Good VIBRARTIONS

Head Office: Office Tel: +27 (0)11 306 0700 Email: Elb@elbquip.co.za

Branches Brits:

Office Tel: +27 (0)12 250 1565 Email: stevenc@elbquip.co.za

Dealers Polokwane:

Office Tel: +27 (0)81 826 4493 Email: simonpjiyane@gmail.com

Botswana:

Cape Town:

Office Tel: +27 (0)21 933 2383 Email: gertm@elbquip.co.za

Durban:

Office Tel: +27 (0)31 464 6522 Email: brucev@elbquip.co.za

East London:

Office Tel: +27 (0)31 464 6522 Email: brucev@elbquip.co.za

George (Service Depot): Office Tel: +27 (0)21 933 2383 Email: gertm@elbquip.co.za

Kimberley:

Office Tel: +27 (0)53 841 0040 Email: deonc@elbquip.co.za

Middelburg:

Office Tel: +27 (0)13 246 2312 Email: lancec@elbquip.co.za

Office Tel: +267 (0)390 9972 Email: graeme@outdistancebw.com

Lesotho:

Office Tel: +266 (0)28 313 926 Email: mollo@matobo.co.za

Namibia:

Office Tel: +26 (0)46 123 4052 Email:erich@barex.com.na

Swaziland:

Office Tel: +268 (0)518 5348 / 518 5602 Email: pedror@mrc.co.sz

Zambia:

Office Tel: +26 (0)21 221 0642 Email: tony@ecmining.com

Zimbabwe:

Office Tel: +263 (0)77 236 2596 Email: bryan@torreafrica.com Email: mark@torreafrica.com

Bulawayo

Office Tel: +263 (0)77 327 3949 Email: mark@torreafrica.com

Website: www.elbequipment.com

Mozambique:

Office Tel: +268 (0)76 022 8488 Email: pedror@mrc.co.sz

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June 2017

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June 2017

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Thomas Mthimunye, regional business development manager, URE

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BULK HANDLING TODAY

June 2017


All four levels of automation have been adopted on the Boltec MC Roof Bolter operating on a gold mine

Altra

®

Industrial Motion

South Africa (Pty) Ltd

THE POWER OF EXPERIENCE A complete range of industrial and high performance couplings together with a comprehensive selection of torque limiting products available from a single source. Turboflex Couplings

Gear Couplings Marland Backstops Grid Couplings Westcar Rotofluid Couplings

Unit 11. Middle Park, Cnr.Craig & Dormehl roads, Anderbolt, Boksburg. PO Box 16524, Atlasville, 1465 Tel: +27 11 918 4270 • Fax +27 11 918 4240 • Email: salesza@altramotion.com

BULK HANDLING TODAY

Svendborg Brakes

June 2017

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BULK HANDLING TODAY

June 2017


POWER TRANSMISSION

Rudi Swanepoel, head of projects at SEW

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June 2017

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June 2017

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CONVEYING

Set three feet above the belt, it works like a series of shelves, catching and distributing the limestone with reduced force onto an impact cradle

The V-Plow prevents material entrapment between the belt and tail pulley from becoming a repeating phenomenon

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BULK HANDLING TODAY

June 2017


CONVEYING

The modular impact cradle absorbs the impact of the falling load, yet slides in and out for easy service

Monthly Walk the Belt inspections have recorded healthy pulleys and no significant belt damage or need for replacement

The external skirting system seals the chute to the belt

Premier supplier of conveyor equipment.

| [f ]+2711 825 3592 | | [t] Cnr. Jack Pienaar and Hertzog Street, Germiston South, Ext 7, South Africa, 1401

BULK HANDLING TODAY

June 2017

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POWER TRANSMISSION

With the TiX560 you can clearly see that the right side of the bearing has an issue

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BULK HANDLING TODAY

June 2017


LIFTING Guide 2017/18

Also publishers of “Bulk Handling Today”

180 x 40mm GLTC Strip AD.pdf

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2017/05/04

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BULK HANDLING TODAY 10247 - KITE 2017 BUL HANDLING AD 267X90 - PATHS.indd 1

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2017/05/15 9:53 AM


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www.minemech.org.za

24 – 26 July 2017

Course fee: R12 600 inc VAT

CHUTE DESIGN AND MODELLING Chutes are crucial components in most bulk material handling systems but their importance is often underestimated. The correct design of chutes is essential in order to avoid costly process interruptions due to blockages or mechanical failure.

Course objectives This three day course, presented by leading Australian and South African practitioners in chute design, will provide detailed methodologies for the calculation of bulk materials trajectories, velocities and pressures that develop with material impact and flow within bulk transfer chute arrangements. An understanding of internal angles of friction and how chute angles are determined and how they are applied to the chute design

will be presented. Understand how to interpret a “comprehensive bulk solids report� and apply the various results to the equipment design. The explanation and use of the chute angle adhesion tester, and its application in design, will be discussed. This course has been accredited by ECSA for 3 CPD credits for attendance. This course is endorsed by the Conveyor Manufacturers Association (CMA) and the South African Institute of Materials Handling (SAIMH). Attendance will entitle the delegate to register with the CMA to write an assignment and an examination, at an additional cost to be advised by the CMA. A CMA Certificate of competency is issued to delegates who pass both the assignment and the examination.

Course lecturers: Dr Kenneth Williams is the General Manager for Research at TUNRA Bulk Solids. He coordinates a wide spectrum of research projects and has been a part of the TBS team for over 10 years. Additionally, he is also the TBS Africa co-ordinator, working closely with the University of the Witwatersrand in Johannesburg on developing services and solutions for the African mining, minerals processing and power industries. His main areas of expertise include the application of stress based analysis for the design of bulk material handling systems, the prediction and design of pneumatic conveying, fluidisation and air slide systems for dense and dilute phase flow, the prediction of wear in bulk material handling systems with focus on wear mechanisms as well as the investigation of DEM-CFD applications and their applicability and limitations for design. Dr Dusan Ilic is a Senior Consulting Engineer with TUNRA Bulk Solids and has operated as a materials handling consultant for over 10 years. In this period he has encountered a vast number of different bulk solid materials across a range of applications and industries. His main areas of expertise involve auditing, concept design, optimisation, numerical modelling and analysis of transfer systems (belt conveying). Other fields of proficiency include bulk solid flow property testing & characterisation, plant layout and 3D concept design, modelling of stockpiles and vessel live capacity. Current research interests include characterisation, handling and transportation of difficult ores and concentrates, development of transfer system design criteria including wear liner selection, and the control and management of dust. Ed Birtch holds a HND in Mechanical Engineering from the UK. He has over forty years of experience in bulk materials handling. He has worked extensively on small and multibillion rand mining projects as a designer, project engineer and project manager and has held other managerial positions in the bulk materials handling field. Ed is a consultant with TBSA, responsible, together with Dr August Lamos, for the development of the TBSA Laboratory, and for the engineering design on bulk solids flow design projects.

www.minemech.org.za


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24 – 26 July 2017

Course fee: R12 600 inc VAT

Course content: • • • • • • •

Flow properties Basic continuum modelling Introduction to DEM and calibration techniques Practical application of continuum and DEM modelling Expanded applications of continuum modelling Dust control analysis techniques Transfer chute design focusing on dust control, wear minimisation and flow optimisation

• • • •

Review of trajectories from conveyors and chutes with practical applications Review of the continuum calculation method with practical applications An introduction to the implementation of DEM in the work environment Operation and maintenance of chutes - chute liners and their applications

Who should attend

This course is aimed at Managers, Engineers, Technologists and other personnel in the resources industries who would benefit from a better understanding of bulk transfer chute design. Book early to ensure a seat on this extremely popular course.

Should you require any further information please contact: Ana-Lucia Cheon info.cmms@wits.ac.za 011 717 7322/63

Adelaide Mashoene shortcourses.witsenterprise@wits.ac.za 011 717 4592


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 650 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 Tel: 074 900 8378 • www.leeasa.co.za Secretary: Arni Sommer • email: arni@leeasa.co.za

BULK HANDLING TODAY

February 2012


LIFTING

Overhauled Liebherr LHM 180 is now used for bulk and general cargo handling in the port of Sibenik, Croatia


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BULK HANDLING TODAY

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BULK HANDLING TODAY

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Billie Christie, Dymot Engineering

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BULK HANDLING TODAY

June 2017


Figure 1. Typical conveyor take-up winch system with VFD, clutch and cylinder

BULK HANDLING TODAY

June 2017

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Figure 2. Typical take-up winch fitted with low speed adjustable slip clutch

Case study – theoretical only - overland conveyor Conveyor length [m]

3 972.0

Conveyor lift [m]

-2.14

Design output [t/h]

900

Design speed [m/s]

2.3

Belt width [mm]

1 200

Belt type

Steel cord

Belt class [N/mm]

1 000

Top idler spacing [m]

1.2

Return idler spacing [m]

2.6

Idler roll dia. [mm]

127 (top and return)

Trough angle [deg.]

45

Take-up type

Electric winch

Take-up location

Head end

Drive location

Head end

No. of drives x number of dr. pulleys

2x2

Total installed power [kW]

2 x 250

Product conveyed

Bauxite (Aluminium ore)

Table 1. Conveyor parameters Normal sheave position

Retracted sheave position Hydraulic retraction cylinder

Tension load cell

Cylinder travel

Power pack c/w motor & accumulator Figure 3. Typical hydraulic low tension protection cylinder system

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BULK HANDLING TODAY

June 2017


Figure 4. Winch active DOL – constant speed winch operation, overload protection (slip clutch) installed – set at 137kN. Graphs of belt tension [N] (upper) and belt velocity [m/s] (lower) at tail (green), head (blue), after drive pulley T2 (red), take-up (pink)

Figure 5. Winch active DOL – constant speed winch operation, overload protection (slip clutch) installed – set at 137kN. Graphs of take-up trolley movement [m] (upper) and take-up trolley velocity [m/s] (lower)

Figure 6. Winch active DOL – constant speed winch operation, take-up trolley speed 0.6m/s, low tension protection (hydraulic cylinder) installed. Graphs of belt tension [N] (upper) and belt velocity [m/s] (lower) at tail (green), head (blue), after drive pulley T2 (red), take-up (pink)

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Figure 7. Winch active DOL – constant speed winch operation, take-up trolley speed 0.6m/s, low tension protection (hydraulic cylinder) installed. Graphs of take-up trolley movement [m] (upper) and take-up trolley velocity [m/s] (lower)

Figure 8. Winch active DOL – constant speed winch operation, overload protection (slip clutch) installed – set at 137kN (total pull at the trolley). Graphs of belt tension [N] (upper) and belt velocity [m/s] (lower) at tail (green), head (blue), after drive pulley T2 (red), take-up (pink)

Figure 9. Winch active DOL constant speed winch operation, overload protection (slip clutch) installed – set at 137kN (total pull at the trolley). Graphs of take-up trolley movement [m] (upper) and take-up trolley velocity [m/s](lower)

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BULK HANDLING TODAY

June 2017


Figure 10. Full load conveyor stop. Graphs of belt tension [N] (upper) and belt velocity [m/s] (lower) at tail (green), head ( blue), after drive (red), take-up (pink)

Figure 11. Full load conveyor stop. Graphs of take-up trolley travel [m] (upper) and take-up trolley velocity [m/s] (lower) along the conveyor

Figure 12. Full load conveyor start-up. Graphs of belt tension [N] (upper) and belt velocity [m/s] (lower) at tail (green), head ( blue), after drive (red), take-up (pink)

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Figure 13. Full load conveyor start up. Graphs of take-up trolley travel [m] (upper) and take-up trolley velocity [m/s] (lower) along the conveyor

Figure 14. Full load conveyor aborted start-up. Graphs of belt tension [N] (upper) and belt velocity [m/s] (lower) at tail (green), head ( blue), after drive (red), take-up (pink)

Figure 15. Full load conveyor aborted start-up. Graphs of take-up trolley travel [m] (upper) and take up trolley velocity [m/s] (lower) along the conveyor

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MARKET FORUM

BULK HANDLING TODAY

June 2017

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MARKET FORUM

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BULK HANDLING TODAY

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MARKET FORUM

The new Potain MD830 will be used for general maintenance on the remote mine site in Mali

Lifting Solutions That Work. TorreLifting_657_adv_BulkHandlingToday_180x30.indd 1

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2016/05/20 2:11 PM

June 2017

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MARKET FORUM

BULK

HANDLING Endorsed by: CMA l LEEASA l SAIMechE l SAIMH

BULK

HANDLING IN AFRICA

G U I D E

LIFTING Guide 2017/18

2017

Also publishers of “Bulk Handling Today”

Endorsed by: CMA • LEEASA SAIMechE • SAIMH

180 x 40mm GLTC Strip AD.pdf

Terex Mining online - March 2017 ONLINE BANNER_303.qxp_Layout 1 2017/03/23 8:21 PM Page 1

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2017/05/04

CONVEYING Guide 2016/17 Also publishers of “Bulk Handling Today”

10:13 AM

EXTENDING THE LIFE OF CONVEYOR BELTS

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WE KEEP BUILDING WHAT WE DON’T NEED!

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l Conveying l Crushing l Trucking l Storage l Lifting l

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June 2017

T O D A Y

May 2017


MARKET FORUM

Dedicated to Brilliant Service

NO TIME FOR DOWNTIME BMG brings together the world's leading brands of gear drives, electric motors and electronic drives and offer integrated drive solutions and vast technical expertise to ensure reduced power consumption and maximised up-time. For more information, contact your nearest BMG branch.

BEARINGS • SEALS • POWER TRANSMISSION • DRIVES & MOTORS • MATERIALS HANDLING • FASTENERS & TOOLS HYDRAULICS • PNEUMATICS • FILTRATION • LUBRICATION • VALVES • TECHNICAL RESOURCES • FIELD SERVICES

BMG-DRI25052017 - BMT 25 May 2017 03:11:37 PM

BULK HANDLING TODAY

June 2017

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MARKET FORUM

HPE Africa has launched the new fuel efficient Hyundai R200LC-9S crawler excavator series in South Africa

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BULK HANDLING TODAY

June 2017


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, 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


Tough demands have met their match.

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Our drive is your performance.

Bulk June 2017  
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