Modern Mining May 2015

PRODUCT News

Repeat order for two overbelt magnets metal plates, tools, tin cans and other such debris.

operate efficiently and reliably. “We have an excellent reputation of providing solutions across many sectors of industry, and we are particularly pleased to be able to enter the Asian mining sector, and look forward to an ongoing relation- ship with DRA Global and Kumtor gold mine. Most mining operations established in the 1970s will soon be looking at equip- ment upgrades, and we believe that the BMG Group is well positioned to become the preferred supplier of quality mill lubri- cation systems in addition to our offering of professional technical support,” says Grobler. Jan Grobler, BMG, tel (+27 11) 793-5562 Slabbert confirms that these are the largest overbelt magnets available in the Longi-Multotec range. “Through our part- nership with Longi, Multotec now has access to a comprehensive range of off- the-shelf air-cooled overbelt magnets for underground tramp metal removal, with the option of flame proofing.” Bernadette Wilson, Multotec Group, tel (+27 11) 923-6193 iron into collection bins at the side of the conveyor. The latest two overbelt magnets were transported to Mpumalanga on lowbed trucks and weigh 28 t each without cool- ing oil. The latter is added once on site using an oil tanker, with a final total weight of 33,7 t for each overbelt magnet. As per client safety specifications, the overbelt magnets have eight safety chains rated and certified for a load of 16 t each. This is double the normal requirement.

Multotec has won a repeat order for two overbelt magnets sold into a coal mining application in the Witbank/Middelburg coalfields. “This order follows on from the successful commissioning two years ago of two overbelt magnets at another coal mine in the same group,” says Willem Slabbert, Process and Applications Manager at Multotec. The magnets will remove tramp metal from run-of-mine material in order to pre- vent it from entering coal gasifiers. “This is a critical application as the coal gasifiers have very stringent tramp metal removal specifications,” Slabbert says. Tramp iron traditionally removed from coal carrying conveyors includes sections of continuous mine core breaker teeth, conveyor belt idlers, belt joints, roof bolts,

Programmable Logic Controllers (PLCs) for the ball mill at Kumtor gold mine in Kyrgyzstan. “Due to their extensive experience with mill control systems, system refurbish- ment and with BMG lubrication systems in particular, DRA Global were contracted to provide the MCCs and control solutions for the mills,” says Jan Grobler, BMG National Product Manager: Instrumentation. One of the biggest challenges BMG faced for this project was the altitude (4 000 m masl) and ambient temperatures which can plummet to as low as -50 deg C in winter. This required some unique design features to enable the system to Multotec supplied the original two overbelt magnets in September 2012, with the latest order representing the second phase of an ongoing expansion project. Stuart Cullum, Process Engineer, explains that the width of the conveyor belts in this coal mining application is 1,8 m, with the overbelt magnets themselves being 5,1 m wide and 2,45 m high. They incorporate the latest technical specifications of the client, including pulley design, control and instrumentation. The overbelt magnets are suspended over the conveyor on gantries for easy removal for maintenance purposes. Features include an automatic belt-driven self-cleaning system that dumps the tramp

Ball mill lubrication system for high altitude mine

The BMG Group in conjunction with DRA Global has successfully supplied and installed a mill lubrication system includ- ing Motor Control Centres (MCCs) and The Kumtor gold mine in Kyrgyzstan where the BMG Group has supplied and installed a mill lubrication system.

Index to advertisers Actom 69 AEL OBC Afrimat 11 Air Liquide 70 ALCO-Safe 68 Allied Crane Hire 65 Aury Africa 51 Babcock Equipment 22 Barloworld Equipment 33 Barloworld Power FC Bell Equipment Company 30 ContiTech IBC DRA Projects SA 32 Dräger South Africa IFC

Electra Mining Botswana

45 13 63 43 71 67 59 17 16 55 14 27 18

Sandvik Mining

56 44 61 36

Flexicon Africa

Sandvik Mining Systems

FLSmidth JOY Global

Sanitech

SCAW Metals Group

Krohne

Sedgman

9

Loesche SA

SEW Eurodrive

58

M & J Engineering MDM Engineering

SP Mine Safety SA

7

Midas Group

Stefanutti Stocks Mining Services

15 54 48 40 19

MMD Mineral Sizing

Voith Mining & Metals Weir Minerals Africa

Novatek

Osborn Engineered Products

Wirtgen SA

PANalytical

WorleyParsons

Robor

2

72  MODERN MINING  May 2015