About this part
Chute liners protect coal transfer chutes, hopper walls, and bin internals from wear and impact. Liner material is selected by the dominant wear mode: ceramic for sliding abrasion at low impact, polyurethane and UHMWPE for impact-dominated wear with mid-range velocities, and chromium carbide overlay or high-chrome white iron for very high abrasion combined with impact. Liner failure causes hole-through wear, escaping product, and downstream damage, so inspection and replacement intervals are typically standardized.
Compatible Equipment
Material Options
- Alumina ceramic tile
- High-purity alumina tiles bonded to rubber backing. Best for sliding abrasion at low to moderate impact.
- UHMWPE sheet
- Self-lubricating polymer. Used in low-impact, sticky-coal applications where sliding resistance matters.
- Polyurethane
- Cast polyurethane, good combined wear and impact resistance.
- Chromium carbide overlay
- Welded overlay on steel substrate, used in heavy-impact, high-abrasion service.
- High-chrome white iron tiles
- Cast white iron tiles bolted to steel structure. Heavy-duty, brittle.
Technical Specifications
| Specification | Value | Unit |
|---|---|---|
| Liner Types | Alumina ceramic, UHMWPE, polyurethane, chromium carbide overlay, white iron | |
| Thickness | 6–50 | mm |
| Attachment | Bonded (rubber-backed), bolted, welded | |
| Tile Size | 50–600 mm depending on type |
Wear Factors
- Particle velocity and impact angle
- Lump size and angularity
- Material moisture (sticky coal causes carryback build-up)
- Substrate flexibility
Replacement Notes
Chute liners are replaced when wall thickness loss approaches the safety limit (typically when 70–80% of the original liner thickness has worn away). Inspection covers, wear-indicator plugs, and ultrasonic thickness gauging support condition-based replacement.