Modern Mining February 2017

PRODUCT News

Following the successful upgrade of the main ventilation fan system at Black Rock Mine Operations’Nchwaning Shaft in 2014, TLT ACTOMwas awarded the main vent fan contract for the mine’s new Gloria ventila- tion shaft in mid-2015. Manganese producer Black Rock Mine Gloria vent shaft fan contract successfully completed Operations, situated near Kathu in the Northern Cape, is operated by Assmang Limited, which is jointly owned by Assore Limited and African Rainbow Minerals Limited. The Nchwaning contract, completed in mid-2014, involved the manufacture

and installation of a fourth centrifugal fan to meet increased ventilation require- ments resulting from extension of mining operations since TLT ACTOM (then ACTOM Mechanical Equipment) installed a trifur- cated system in 2007. The R26-million Gloria shaft main ventilation fan contract, which was completed ahead of schedule in early- February 2016, involved installation of a trifurcated system that included the manufacture and installation of two of the three 2 430 mm diameter centrifugal fans for which it is designed – with the third fan due to be supplied and installed at a future date when additional ventilation is required. The scope included earthworks, civils, mechanical, structural and electrical, con- trol and instrumentation (EC&I). The fans, which are driven by 460 kW motors, each have an air-moving capacity of 110 m 3 /s. Craig Johnston, TLT ACTOM, tel (+27 11) 878-3029 Rocket type safety detaching hook sets to suit the service winder, which has a 26 mm rope fitted. All hook sets were supplied complete with catch plates and jack catch boxes, which are mounted in the headgear as a critical safety feature to prevent injury to personnel and damage to the shaft infra- structure should an overwind occur. Rocket safety detaching hooks are designed to detach the winding rope from the conveyance in the event of an overwind and arrest and suspend the con- veyance in the headframe. This patented design caters for the prevention of partial

The main ventilation fan system at Black Rock Mine Operations’ Gloria ventilation shaft.

Winding rope attachments delivered by Becker within the required time frames.

Index to advertisers Afrimat 43 Alco-Safe 42 Allied Crane Hire 27 Babcock Equipment OFC Barloworld Power – Industrial IBC Booyco Electronics 13 ContiTech South Africa 36 “The scope of this contract encom- passes the design, manufacture and delivery of rope attachments to suit three different winders on the mine, as well a complete spare set,” says Tom Searle, Senior General Manager: Mechanical, Becker Mining South Africa. “Becker has also supplied rope handling equipment, includingWRC clamps, used during instal- lation and maintenance of ropes. Sixty per cent of this order was delivered ahead of schedule and the balance of the equip- ment will be delivered early this year, Becker Mining South Africa has com- pleted delivery of the first consignment of winding rope attachments to a client oper- ating on theWestern Limb of the Bushveld Complex.

“All equipment, which is proof load tested by Becker Mining to two and a half times the safe working loads it will be subjected to in service, is suitable for the mine’s winder duties. It also complies fully with all the relevant mine health and safety acts and mining regulations.” Four sets of head rope attachments and four sets of tail rope attachments are required for the 4,5 m drum diam- eter Koepe winder, which accommodates 38 mm head ropes and 40 mm tail ropes. Complete 30-ton Rocket type safety detaching hook sets were supplied for the man/material winder which has a 4,88 m drum and 51 mm ropes. The contract also includes a set of 5-ton

detachments whilst in service. Thomas Searle, Becker Mining South Africa, tel (+27 11) 617-6300

DRA Global FLSmidth Joy Global

IFC/1

Mynbou Rigs Africa t/a Belaz Africa

41

40 33

Powerbit Rocktools

2

Komatsu

OBC

Stefanutti Stocks Mining Services

39

Maelgwyn Mineral Services Africa

11 15

Transcor Truck Hire

7

Maptek

MMD Mineral Sizing Africa

4

Winder Controls

9

44  MODERN MINING  February 2017