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PRODUCT News
44
MODERN MINING
February 2017
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
DRA Global
IFC/1
FLSmidth
40
Joy Global
33
Komatsu
OBC
Maelgwyn Mineral Services Africa
11
Maptek
15
MMD Mineral Sizing Africa
4
Mynbou Rigs Africa t/a Belaz Africa
41
Powerbit Rocktools
2
Stefanutti Stocks Mining Services
39
Transcor Truck Hire
7
Winder Controls
9
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
The main ventilation fan system at Black Rock Mine Operations’ Gloria ventilation shaft.
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.
“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,
Winding rope attachments delivered by Becker
within the required time frames.
“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
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
detachments whilst in service.
Thomas Searle, Becker Mining South Africa,
tel (+27 11) 617-6300