Modern Mining May 2017 Final

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34 MODERN MININGMay 2017
feature
CRUSHING, SCREENING
AND MILLING
The new semi-mobile station com-
prises a primary 1300 Series sizer
fed by a D9 apron plate feeder. A
sacrificial conveyor transfers ma-
terial to a secondary 625 Series
sizer. The station is capable of processing coal
at a rate of 3 000 t/h. Construction began in
March 2016 and by the end of November the
unit was relocated to its working position. Like
the semi-mobiles before it, it was relocated in
five sections down into the pit over a distance
of 6 km using MMD’s Atlas 500T transporter.
“The MMD sizing stations at the mine pro-
vide a complete in-pit crushing solution. The
four semi-mobile stations have been deliv-
ered and installed over a period of six years.
Although all four installations are similar, we
have continually improved and customised
the designs in the light of operational experi-
ence with the units and to meet the customer’s
evolving requirements,” says Zane Nel, MMD
Mineral Sizing (Africa)’s Engineering Manager.
MMD Mineral Sizing (Africa), which has
had a presence in South Africa since the early
1980s with its manufacturing facility being
expanded by 3 500 m2 in 2002, is part of the
MMD Group of Companies. The South African
company is based in a modern office/work-
shop complex in the Longmeadow Business
Estate in Johannesburg.
The MMD Group can trace its origins back
to the late 1970s, when its founder, Alan Potts,
set up shop to design and produce mining
Fourth MMD sizing station
This complete MMD turnkey
semi-mobile installation at
a graphite mine in the north
of Mozambique is about to
be commissioned.
What is undoubtedly one of the biggest applications of
mineral sizer technology seen in South Africa reached
a milestone earlier this year when MMD Mineral Sizing
(Africa) commissioned a fourth MMD semi-mobile sizing
station at Exxaro’s Grootegeluk open-pit coal mine near
Lephalale in Limpopo Province.