Every mill is unique! Experience from over 8,000 mills worldwide, combined with the market’s most comprehensive offering, means that we can select the optimal mill lining solution for your specific mill.
Performance targets:
Improved sustainability
Long-lasting, high-performing liners designed with sustainability and safety as top priorities
Increased uptime
Shorter and fewer maintenance stops
Lower maintenance costs
Reduced cost of operation, quick and easy maintenance
Optimized throughput
Maximized yearly production
Continuous improvement
Safety first
All Metso wear parts are designed with safety as the top priority. We believe that all accidents can be prevented, and we are committed to taking responsibility for our own safety and for the safety of others. Workers' safety is improved by constant development of tools and methods. Installations can be carried out in a safer way by lighter, wear resistant components, guiding markers, Metso Liner Position System and components with a perfect fit.
Our unique attachment system, developed for Megaliner mill liners, is an invention which have made a great difference for workers' safety. Liners are placed by the liner handler operator alone and the bolts are inserted from the outside of the mill.
Local support and global expertise
At Metso, cooperation with our customers and availability to offer support and service are of key importance. We have local support close to our customers, several expertise hubs as well as research facilities focused on wear parts development.
Metso's global laboratory network offers unmatched testing and material development. Our wear parts are manufactured in Metso's global factory network, utilizing the latest technologies and adhering to stringent quality standards. Today we have nine production units focusing on rubber and Poly-Met wear parts and five foundries for metallic wear parts.
Unique knowledge in grinding
Metso is widely recognized as a technology leader in mill manufacturing, which makes us much more than a service and wear parts supplier – we are true grinding experts. We know the functional parameters, mechanics, kinematics and forces the mill is subjected to in operation. Thinking long term already when buying a mill provides greater opportunities to achieve lower maintenance and operating costs. This, in combination with knowledge about your current operation conditions and targets, is crucial when designing a mill lining.
Leading innovations
Developing new materials and solutions together with our customers is at the heart of what we do. By choosing Metso, you gain access to the latest innovations and can participate in the process of creating them. We pioneered the use of rubber linings and invented Poly-Met, Megaliner and Orebed mill linings. New products are constantly being developed to enhance our customers’ ever more advancing processes. Our recent innovations include 3D wear reading scanning, full Megaliner™ range, trommel deflector, Turbo Pulp Lifter, Liner Positioning System upgrade and worn liner recycling service.
Superior optimization capabilities
By working with a partner who understands the variables affecting grinding performance, you can maximize mill performance and availability, as well as reduce CO2 emissions.
We are constantly working to optimize your mill lining design according to your targets and current conditions. Our simulation software allows us to predict the performance of the customized lining extremely accurately, which ensures that we deliver the gains we promise. With Metso, you can be sure that your mill lining is always designed according to your targets, ore and grinding process.
Combine for better results
Liners for all sections of various types of mills
Metso designs mill linings for optimal grinding performance. We offer fit for purpose liners for all types of mills, including SAG mills, AG mills, ball mills, rod mills, and pebble mills. Our liners are designed to fit the specific requirements of each mill, taking into account factors such as mill size, speed, charge, expected service life, and ore properties. With our integrated approach, we make sure that your different wear parts work together to help you achieve your production and sustainability goals.
Head linings
As part of a system solution, the head lining is designed with consideration to the shell lining design. All components must be in balance to minimize the number of maintenance stops.
We keep the number of individual parts to a minimum and to ensure that parts do not interfere with each other during installation. Liners that are most subject to wear are made more robust, and whenever possible these high wear parts are designed to be independently replaceable.
Shell linings
The shell lining has a major influence on grinding efficiency. It transforms the mill rotation into charge motion and both profile and spacing must be carefully selected to suit each specific mill.
When designing a shell lining, Metso considers the type of grinding, mill size and speed, maintenance schedules, safety, impact levels, efficient use of materials, and many other parameters.
Discharge systems
Metso’s wear-resistant rubber-covered or cast dischargers come in two general designs – radial and curved. The larger the mill, the longer the distance the material must travel before being discharged into the trunnion.
A curved discharger design will initiate a flow towards the center of the mill at an earlier stage and ensure that the discharger pan is emptied and ready to be refilled during the next pass through the charge. Prompt removal of material and less backflow will allow the energy to be more efficiently utilized for grinding fresh ore. As less material is recirculated, wear life increases. In addition, increased flow can also contribute to increased throughput and decreased power consumption.
Trunnion linings
Metso trunnion liners are custom-made to protect your mill trunnions from internal wear. Fit is critical, and our trunnion liners can be made to almost any size or shape.
Typical design features include internal spirals or dams to control material flow, flanges for the mounting of trommel screens, the inclusion of threaded holes for jacking screws, inspection ports, etc. Metso trunnion liners are grouped into three categories; One-Piece, Replaceable Sleeve, and Bolted Wear Elements.
Mill trommel screens
Mill trommels, whether used for sizing or scalping, play a vital role in your grinding circuit. Metso’s robust but light-weight trommel frames consist of carefully selected welded profiles that are covered in a protective layer of wear-resistant rubber or polyurethane. Adapting flanges, if required are available to suit the design of virtually any trunnion or trunnion liner interface.
There are two main types of screen panels – modular and customized. The modular trommel panel with snap-on attachment comes in a standard size of 305 x 610 mm. Installation and replacement of the snap-on screen panels is easily accomplished and results in minimal if any impact on mill availability.
1. Head linings
Head linings
As part of a system solution, the head lining is designed with consideration to the shell lining design. All components must be in balance to minimize the number of maintenance stops.
We keep the number of individual parts to a minimum and to ensure that parts do not interfere with each other during installation. Liners that are most subject to wear are made more robust, and whenever possible these high wear parts are designed to be independently replaceable.
2. Shell linings
Shell linings
The shell lining has a major influence on grinding efficiency. It transforms the mill rotation into charge motion and both profile and spacing must be carefully selected to suit each specific mill.
When designing a shell lining, Metso considers the type of grinding, mill size and speed, maintenance schedules, safety, impact levels, efficient use of materials, and many other parameters.
3. Discharge systems
Discharge systems
Metso’s wear-resistant rubber-covered or cast dischargers come in two general designs – radial and curved. The larger the mill, the longer the distance the material must travel before being discharged into the trunnion.
A curved discharger design will initiate a flow towards the center of the mill at an earlier stage and ensure that the discharger pan is emptied and ready to be refilled during the next pass through the charge. Prompt removal of material and less backflow will allow the energy to be more efficiently utilized for grinding fresh ore. As less material is recirculated, wear life increases. In addition, increased flow can also contribute to increased throughput and decreased power consumption.
4. Trunnion linings
Trunnion linings
Metso trunnion liners are custom-made to protect your mill trunnions from internal wear. Fit is critical, and our trunnion liners can be made to almost any size or shape.
Typical design features include internal spirals or dams to control material flow, flanges for the mounting of trommel screens, the inclusion of threaded holes for jacking screws, inspection ports, etc. Metso trunnion liners are grouped into three categories; One-Piece, Replaceable Sleeve, and Bolted Wear Elements.
5. Trommel screens
Mill trommel screens
Mill trommels, whether used for sizing or scalping, play a vital role in your grinding circuit. Metso’s robust but light-weight trommel frames consist of carefully selected welded profiles that are covered in a protective layer of wear-resistant rubber or polyurethane. Adapting flanges, if required are available to suit the design of virtually any trunnion or trunnion liner interface.
There are two main types of screen panels – modular and customized. The modular trommel panel with snap-on attachment comes in a standard size of 305 x 610 mm. Installation and replacement of the snap-on screen panels is easily accomplished and results in minimal if any impact on mill availability.
More than a lining
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