Ball Mill Liner Plate
The ball mill liner is installed on the inner wall of the ball mill barrel. Its main function is to protect the barrel from direct impacts and friction with materials and grinding media, preventing premature damage. At the same time, different liner shapes can adjust the movement state of the grinding media inside the barrel, helping them grind materials better, thus improving grinding efficiency and effect.
Ball mill liners are important spare parts that wear out quickly during mill operation and need regular replacement to prevent equipment failure. AGICO provides a variety of ball mill liners in different materials and shapes and also offers custom processing according to customer drawings, ensuring the most suitable products for our clients.
Features of Mill Liner
Protect the Mill Shell & Improve Grinding Efficiency
- High wear resistance: Made of high-quality alloy steel, high manganese steel, or rubber material, the service life is longer than ordinary liners.
- Strong impact resistance: Can withstand high-energy impact from grinding media without breaking easily.
- Improved grinding efficiency: Reasonable liner shapes (wave, step, etc.) effectively adjust the movement state of grinding media.
- Low noise: Rubber liners have shock-absorbing and noise-reducing functions, with noise levels 8-10 dB lower than metal liners.
- Easy installation: Rubber liners are lightweight (density is only 1/6 of manganese steel), and installation time is 1/3 of metal liners.
- Energy saving: Rubber liners reduce barrel weight, lower motor load, and save electricity.
- Good sealing performance: Rubber liners provide better sealing performance, preventing slurry leakage.
Types of Ball Mill Liners
Ball mill liners can be classified into various types according to installation position, shape, and function.
By Shape
- Flat liner
- Wedged-bar liner
- Wave liner
- Step liner
- Convex liner
- Annular groove liner
| Shape | Application | Features |
|---|---|---|
| Flat liner | Fine grinding chamber | Flat surface, weak lifting effect on grinding media, mainly relies on static friction. |
| Wedged-bar liner | Coarse grinding chamber (first chamber) | First and second chambers of the multi-compartment mill |
| Wave liner | Rod mill, fine grinding chamber | Small wave crests and pitches, suitable for fine grinding. |
| Step liner | Coarse grinding chamber | Uniform lifting height for the same ball layer, even plate wear. |
| Convex liner | Coarse grinding chamber | Strong material pushing ability, good impact resistance. |
| Annular groove liner | First and second chambers of multi-compartment mill | Lifts grinding media higher, producing a greater impact force, suitable for large particle size and high hardness materials. |
By Installation Position
- Shell liner – Installed on the inner wall of the ball mill barrel, protecting the main body of the barrel.
- Head liner / End cover liner – Installed on the grinding head end cover or barrel end cover, protecting the end cover from wear.
- Diaphragm liner / Grate plate – Separates different grinding chambers and controls material flow.
- Lifter bar – Installed between liners, enhancing the lifting effect on grinding media.
By Surface Characteristics
- Smooth liner – Large sliding, strong grinding, and stripping effect, more suitable for fine grinding.
- Unsmooth liner – Produces lifting effect on materials and steel balls through friction, strong agitation effect, suitable for coarse grinding.
Ball Mill Liner Materials
Which Material to Choose?
Common Materials
| Material | Hardness/Performance | Application |
|---|---|---|
| High manganese steel (Mn13, Mn13Cr2) | Hardness HRC20-25, impact toughness ≥100J/cm². Surface work hardening occurs under impact, hardening thickness can reach 10-20 mm. | High impact conditions (coarse grinding chamber), suitable for dry grinding. |
| High chromium alloy (Cr 8-26%, C 2.0-3.6%) | HV1300-1800, M7C3 eutectic carbides distributed in broken network, high strength, good wear resistance. | High wear conditions, suitable for dry or wet ball mills. |
| Rubber | Density is 1/6 of manganese steel, service life is 1.5-2 times longer than manganese steel, and noise is 8-10 dB lower. | Wet grinding, fine grinding, noise reduction requirements. |
| Medium alloy dual-medium quenching steel | Hardness HRC45-55, impact toughness ≥25J, service life more than twice that of high manganese steel. | Adapts to wet grinding, dry grinding, mixed grinding, and other conditions. |
Advantages of AGICO Cement Mill Liner
AGICO ball mill liners are made with advanced technology and strict quality control, meeting international standards.
Strict Quality Control
AGICO has a perfect quality control system and advanced testing equipment. From raw material inspection, UT inspection, and physical property testing to dimension inspection, each process is strictly controlled.
Advanced Production Line
Our factory has built an internationally advanced-level liner production line. From drawing design and software simulation to mold casting, each link is strictly controlled. We have 2 sets of 60T basic electric arc furnaces, natural gas heat treatment furnaces, and large shot blasting cleaning machines.
Meet International Standards
AGICO products meet international mainstream standards, including ASTM A27, GB/T 20878, AISI, JIS, BS970, etc., and have been exported to Europe, Africa, Southeast Asia, Germany, Korea, the USA, Russia, Spain, and other countries and regions.
Why Choose AGICO Ball Mill Liner Manufacturers?
- 20+ years of industry experience: More than 20 years of experience in cement and mining equipment spare parts, deeply understanding ball mill operation challenges.
- Customized service: Customized liner shapes, thickness, materials, and specifications according to customer drawings and requirements.
- Complete certification: ISO9001 certified, product quality guaranteed.
- Perfect after-sales service: Provide after-sales service, including installation guidance, on-site inspection, and technical support.
- High cost performance: Factory direct sales, reasonable prices, helping customers reduce operating costs.
