WEAR PARTS
A trial using Linard 60, a silica-reinforced
compound that retains the natural strength and
nerve of latex while combining with the toughness
needed for handling coarse materials, was
arranged, with the entire feed hopper and spout
lined with this.
The results saw wear life increase to 12 weeks.
With only the partially worn areas requiring relining,
there was also a reduction in relining costs. This, in
turn, increased plant availability, resulting in fewer
stoppages and reduced operating costs.
Continuous crushing
Metso recently launched an initiative to speed up
and improve the safety associated with primary
gyratory crusher shutdowns through its Rotable
top shell program.
Available for all Metso Superior ® primary
gyratory crusher models, the Rotable top shell
can, Metso says, reduce downtime by up to 45%,
minimise high risk maintenance work and
optimise shutdown tasks.
By using an additional shell segment(s) already
inspected and lined with installed concaves prior
to shutdowns, operators save both time and
money carrying out the maintenance process,
according to Metso.
During the shutdown, installed shells are
unfastened and simply split via hydraulic shell
separators before being lifted from the crusher.
The bottom shell can be more easily accessed for
maintenance while top shells are removed, the
company says, removing risk hazards at the same
time as minimising labour hours.
Meanwhile, the Rotable shells are quickly
installed, minimising labour hours and risk
hazards to crews.
The Rotable top shell also provides
predictability to operators, with the shutdown
costs known ahead of the process, making it
easier to plan and manage budgets.
Composite for conveyors
ROXON, a part of NEPEAN Conveyors, recently
released a new range of wear protection products
for the mining industry.
The global mining conveyor systems and
components specialist says ROXDUR uses the
latest wear material technology and innovative
manufacturing processes to create a truly unique
range of wear products.
ROXDUR has been developed on the back of
research and development from ROXON’s
engineering team and uses a composite material
that combines extreme hardness to minimise
abrasive wear and iron-matrix technology to
absorb impact, it said.
“The metallurgical bond between the
cemented carbide and iron matrix gives a
composite material with very high-quality
adhesion to the cemented carbide,” the company
explained.
The ROXDUR iron-matrix technology is
unprecedented in the industry and can extend the
life of fixed plant mining equipment by up to 20
times compared with other products, according to
the company, which has three global patents
pending for the range.
The range includes welding segments, edge
liners and wear plates and is suitable for all lowto
heavy-duty mining applications, according to
the company.
ROXON has developed a standard range of wear
plates with a thickness of 30-50 mm, but
opportunities remain to customise these
depending on the application, the company said.
ROXDUR Product Manager, Oskar Larsson, said
productivity losses and unplanned downtime due
to wear-related breakdowns cost mining
companies’ significant amounts of time and
money each year.
“ROXDUR is a premium product that has the
best durability on the market. We started
developing it in 2018 and realised fairly quickly
that we needed to combine the durable, but
relatively brittle, cemented carbide with some
toughness to get the best of both worlds in a
whole new material,” he said.
“We are really excited with the new product.
When compared to a standard plate of 500 Brinell,
we have between 10-15 – sometimes 20 – times
longer life. This will make a huge difference for our
customers.” IM