NARROW VEIN & LOW-PROFILE MINING
The DL2711 long hole drill is compact and
allows the drill module to be closer to the face
in narrow-vein mining applications
The DS2711, meanwhile, is a one-man operated
electro-hydraulic, fully mechanised bolter for rock
reinforcement in underground hard-rock mines.
The operator works from supported ground while
protected under a FOPS-certified canopy structure.
“Mechanisation of the bolting process ensures
efficient, constant and durable rock bolt integrity,”
Sandvik said.
The DS2711 provides “excellent” bolting
performance to cost ratio for small and medium
size tunnels with a minimum cross section of 2.7
m (width) x 3 m (height), according to Sandvik.
“Designed with proven and reliable
components, the DS2711 provides high reach, and
is able to install all types of mechanised rock bolts
ranging in length from 1.5 m to 2.4 m,” Sandvik
said. “It is in effect a small premium bolter,
compact, mobile, and designed for global needs.”
The next addition to the range – the Sandvik
DL2711 and DL2721 long hole drills – happened in
July.
These new long hole drills are fully mechanised
and compact, with an electro-hydraulic HL710S top
hammer rock drill designed for underground
mining in 3.2 x 3.2 m or larger production drifts,
Sandvik says.
The machines are capable of drilling vertical
and inclined fans and single or parallel diameter
64–89 mm long holes up to 38 meters in length,
using T38, T45 and T51 MF-rods or Ø65 mm tube
rods.
MEI�Conferences
A 360° drilling module rotation and wide boom
swing and tilt angles, meanwhile, make the drill
suitable for most mining methods and various
service support applications, Sandvik says.
Comminution ‘21
Cape Town, South Africa, April 1922, 2021
Sponsored by: King's Ceramics & Chemicals, Russell Mineral Equipment,
Keramos, Grinding Solutions, Glencore Technology, Starkey & Associates, ME
Elecmetal, Derrick Corp., ZEISS, Hudbay Minerals, Magotteaux, FLSmidth,
Outotec, Sino Grinding International, Maelgwyn Mineral Services, Metso,
CEEC, International Mining & Imformed
Physical Separation ‘21
Falmouth, Cornwall, UK, June 79, 2021
Sponsored by: Bunting, International Mining, Imformed, CEEC & Cornwall
Mining Alliance
Integration, Optimisation & Design of Mineral
Processing Circuits ‘21
Falmouth, Cornwall, UK, June 1011, 2021
Sponsored by: Promet101, Cornwall Mining Alliance & International Mining
Biomining ‘21
Falmouth, Cornwall, UK, June 2122, 2021
Sponsored by: AFX Mixing & Pumping Technologies, International Mining &
Cornwall Mining Alliance
Sustainable Minerals ‘21
Falmouth, Cornwall, UK, June 2324, 2021
Sponsored by: FLSmidth, International Mining, Cornwall Mining Alliance &
CEEC
Flotation ‘21
Cape Town, South Africa, November 811, 2021
Sponsored by: Promet101, Maelgwyn Mineral Services, Magotteaux, Gold
Ore, CiDRA Minerals Processing, Hudbay Minerals, Senmin, Clariant, BASF &
International MiningCornwall Mining Alliance
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Conferences
The DL2711 version is
more compact and allows
the drill module to be
closer to the face, while
the DL2721 version
allows safe operations
under a protected FOPS
canopy, according to the
company.
How low can you
go?
When low-profile mining
becomes extra low
profile (XLP) mining, the
number of companies
miners can turn to for
new equipment
decreases.
Epiroc, Sandvik and
Rham have both come up
with XLP offerings –
aimed at the popular
South Africa market – but
specialists such as DOK-
ING have been gaining
market share of late and
realised the future of XLP
mining looks to be
electric.
In electric
developments, Sandvik’s LZ101LE battery-powered
dozer is currently still being trialled, according to
the original equipment manufacturer.
It features a push capacity of up to 4 t and is
designed for cleaning stopes as low as 1.1 m. This
makes it an ideal machine for tabular orebodies,
such as platinum and chrome mines, the company
says.
“Trials are ongoing to collect results from
operations in various situations – more detailed
information will be communicated in a next
phase,” Sandvik says.
Epiroc, meanwhile, is facing potential upheaval
at the Anglo American Platinum-owned Tumela 15E
underground platinum mine, part of the
Amandelbult Complex in Limpopo province, South
Africa.
In Anglo American Platinum’s 2019 report, it
said it was planning to trial electric narrow reef
mechanised equipment at Tumela. These new
narrow reef machines use lithium-ion batteries,
which can achieve up to 2,000 charging cycles,
and will eventually replace the current fleet of
diesel-powered Epiroc XLP units in the future, it
said.
IM understands that Tumela will initially use the
existing diesel refurbished Epiroc XLP fleet for the
first phase of the 15E work, with the intention to
progressively phase the units out with electric
DOK-ING Narrow Reef Equipment (NRE) in its final
production trial stage, later in 2020.
If the NRE equipment performs to expectations,
the mine will then utilise the NRE units as it opens
the scale of the 15E project.
The potential NRE benefits are numerous,
according to the company. Foremost is safety, as
remote-controlled equipment keeps workers away
from the mine face. It allows for lower panel
widths (0.9-1.7 m), resulting in less dilution of ore
with waste, as well as faster extraction and
62 International Mining | JULY/AUGUST 2020