Reduces resistance to bulk material sliding along the liner and helps limit retention of wet fines in bins, chutes and flow-guiding areas.
Polymer Mining Liners
Design material performance and liner structure together
Ultra-high-molecular-weight polyethylene (UHMWPE) is an engineering polymer with low friction, wear resistance and impact resistance. In mining liners, compound selection is one part of the design: thickness, support, thermal expansion, creep, countersunk holes, edge clearances and fastening also influence performance.
Key Properties and Their Practical Roles
Evaluate friction, impact resistance, wear resistance and maintenance needs by installation zone and failure mode.
Polymer toughness can cushion falling material, but large drop heights, coarse ore and stress around holes still require structural assessment.
Evaluate for linings dominated by sliding abrasion in wet or corrosive environments. Actual wear depends on the material handled and temperature.
Lower density than metal facilitates modular replacement. Control deformation through backing support, fasteners and joint design.
Related Parts
Modified UHMWPE suits selected bulk-flow and sliding-wear zones. It does not replace HPGR roll surfaces, studs or every high-impact metal liner.
HPGR Receiving and Feed Hopper Liners
- Main problems
- Falling-feed impact, sliding abrasion, sticking, embedded particles and stress concentrations around fastening holes.
- Material role
- Reduces friction and sticking while using polymer toughness to withstand controlled impact.
Check drop height, maximum particle size, support structure, finished thickness, hole positions, clearances and thermal expansion.
Bin and Chute Liners
- Main problems
- Fine-material retention, bridging, sliding abrasion, wet-feed adhesion and local impact.
- Material role
- A low-friction surface helps discharge and resists wear within suitable temperature and support conditions.
Select materials separately for impact, sliding and flow-turning zones. High-impact areas may require steel, rubber or composite structures.
Polymer Flow Guides and Transfer-Zone Liners
- Main problems
- Continuous sliding, edge wear, noise, moisture and frequent removal.
- Material role
- Reduce friction, noise and corrosion, with modular plates facilitating maintenance and replacement.
Avoid unsupported areas, overtightening, cracks around holes, and buckling or joint compression caused by temperature changes.
HPGR Feed Hopper Polymer Liners: Selection and Ordering Requirements
Establish requirements from hopper positions, liner drawings, feed and operating conditions. Confirm material properties, finished dimensions and site performance targets separately.
| Information category | Ordering information | Selection checks |
|---|---|---|
| Equipment and installation position | HPGR receiving or feed hopper liners: record the manufacturer, full model, liner position and modification status. | Distinguish hopper liners from roll surfaces, studs and roll-end protection. |
| Drawings and quantities | Provide each plate's drawing number, revision, quantity, finished thickness, outline, hole pattern and layout drawing. | Check individual dimensions against drawings and organise sets by installation zone. |
| Operating conditions | Record ore type, particle size, abrasiveness, throughput, daily operating hours, moisture and drop height. | Assess impact, sliding and flow-turning zones separately when selecting materials and support. |
| Material requirements | Specify the modified PE-UHMW grade, molecular-weight requirement, hardness and corresponding test methods according to the design. | Confirm material requirements together with finished-part structure, and assess inspection results by the relevant batch and method. |
| Service-life information | Record remaining thickness, wear rate, replacement intervals and maintenance conditions in each zone of the existing liner system. | Agree performance targets and warranty terms for the specific operating conditions. |
Structural Design and Manufacturing Checks
Polymer liner performance depends on materials, plate design, machining and installation working as a complete system.
Determine thickness and segmentation from drop impact, unsupported span and substrate stiffness. Avoid large unsupported areas and excessive local deflection.
Check countersunk holes, fasteners, washers, edge distances and preload to avoid stress concentrations, pull-through and creep-related loosening.
Allow expansion clearance for operating temperature, plate length and attachment method, controlling buckling, warping and joint compression.
Distinguish raw-material/plate certificates, sample tests and finished-dimensional inspection. Maintain traceability by batch, drawing number and plate position.
Comparison with Other Liner Materials
Select materials for the specific installation position and duty.
| Material Options | More suitable conditions | Main Limitations |
|---|---|---|
| Modified UHMWPE | Zones with sticking and sliding abrasion that require low friction, low water absorption and lighter modular liners. | Address temperature, creep, fastening-hole edges and direct impact from large drop heights in the design. |
| Quenched and Tempered Wear Plate | Bins and chutes requiring structural stiffness, load capacity, higher impact resistance and welded attachment. | Greater weight and possible adhesion of wet fines; control welding and low-temperature performance. |
| Wear ceramics / composite plates | Severe sliding abrasion and erosion with controlled impact, good support and reliable attachment. | Brittleness, joints, detachment and direct impact from large lumps require attention. |
| Rubber or Rubber-Metal Composites | Zones requiring impact absorption, noise reduction and cushioning of large material. | Cutting, tearing, temperature, process media and attachment design can limit service life. |
Explore Related Equipment and Parts
Find the relevant HPGR, bin or chute product page to check OEM models, drawing numbers, dimensions and materials.
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Submit liner drawings, feed details and drop conditions
Provide the equipment model, drawing number, plate thickness, hole positions, drop height, maximum particle size, throughput, temperature, existing material, failure photographs, quantity and target service life.