NEW EQUIPMENT NEWS
Bottom line benefits
FLSmidth has launched redesigned
mill lining components engineered
to suit the specific functions and
differing operating environments of
the mining industry. Its new mill liners
increase the throughput of SAG mills
and substantially increases the wear
life of liners.
Delivering on a promise to provide
increased productivity to the mining
industry, the composite materials in
FLSmidth’s new mill liners ensure
users can take advantage of the wear
characteristics of multiple materials,
while extending the liners’ wear life.
With lighter weight mill liners,
installation is faster and safer as each
liner is easier to manipulate. There
are also fewer parts, and hence fewer
movements are required to perform a
reline resulting in a significant decrease
in scheduled downtime. The composite
nature of the liner reduces its weight
by almost 50%, allowing the plant to
increase its ball charge level without
increasing the total weight of the
mill. This higher ball charge further
contributes to the higher throughput.
The lighter weight has an important
impact on size, design and installation
time. Each liner can now be larger –
subject to the size of the mill opening –
and the mill can be lined with fewer of
them, reducing the downtime required
to conduct replacement. A lighter liner
means fewer bolts to hold it in place,
further reducing installation time. The
shorter downtime means less time for
contractors inside the mills, leading to
faster and safer liner changeout.
Another important benefit of the
composite material used in many of
FLSmidth’s redesigned liners is it is
not necessary to torch the liners, as is
sometimes required when removing old
steel liners. This torching process in the
mill is best avoided, as it can cause costly
damage to the mill shell. An additional
development of composite material
shell liners means that they are bolted
from the outside of the mill, speeding up
installation and reducing risk.
“As mines increasingly recognise
the positive financial impact derived
from just a few more percentage
points in throughput improvement,
many are looking beyond conventional
steel cast liners for mills. FLSmidth’s
innovations, based on combinations
of steel, rubber and ceramic
components, allow the liners to be
thinner, resulting in a larger volume
inside the mill, making higher charge
levels possible,” comments Jack
Meegan, product line manager for
comminution at FLSmidth.
The depth of technical and
operational expertise within FLSmidth
allows a high level of process support
for customers assisting in mill operation
and metallurgy. This is vital to the
company’s strategic mission of helping
customers achieve higher production
and recovery rates. FLSmidth is also on
hand with technical advisory services
to assist with installation, so scheduled
downtime is minimised and uptime
optimised.
FLSmidth composite mill liners are designed to increase the throughput of SAG mills
and increase the wear life of the liners.
www.equipmentandhire.co.za
AUGUST 2019
13