Metso’s new Megaliner™ Poly-Met shell liner maximizes mill availability while improving worker safety
The new Metso Megaliner™ shell liner keeps downtime in large mills to a minimum, utilizing an innovative design that offers speedy replacement. It also improves worker safety during maintenance, as the liners are bolted into position from the outside of the mill, so workers do not need to stand in the ‘drop-zone’ of the liners.
Mill availability is improved through faster liner replacement. Megaliner™ uses larger than average liners, yet these can still be placed with the same 6- to 8-axis liner handlers used with many large AG mills. Using larger liners means mills require fewer of them and Megaliner™ also has fewer attachment points compared with conventional liners, speeding up installation even further. Liners are easily and accurately positioned before bolting with the aid of highly visible, colored guiding markers.
A liner handler operator positions a Megaliner™.
Megaliner™ weighs up to 60% less than a metallic liner of similar size
The system makes removal and replacement of liners just as quick, safe and easy as installation. Bolting and unbolting is straightforward as the threaded portion of the standard hex-head liner bolts is protected from dust, corrosion and general mechanical damage. Once loosened, it is often possible to remove the liner bolts simply by hand-turning them. Pneumatic or recoilless hydraulic hammers are not needed to dislodge worn Megaliners, as gravity alone is generally sufficient.
The Megaliner™ is suitable for large AG mills with large trunnions and where modern liner handlers are available. Each Megaliner™ element integrates multiple lifter and shell plate rows, and covers an area up to 4 m2. The rubber / metal composite liner weighs between 30% and 60% less than metallic liners of a similar size. Overall installing and replacing mill liners with the Megaliner™ system creates a much safer and less stressful environment for the liner handler operator and the installation team.
Bolts are attached from outside of the mill only.
For further information please contact:
Håkan Ståhlbröst, Global Application Support Manager, Mill Lining Solutions, Mining and Construction, Metso, Tel. +46 910 58 42 18, email@example.com
Maria Marklund, Marketing and Communications Manager, Mill Lining Solutions, Mining and Construction, Metso, Tel. +46 910 58 42 75, firstname.lastname@example.org