Ceramic tile chute liners use 92% alumina (Al₂O—? ceramic tiles —?one of the hardest commercially available ceramic materials (Mohs 9, Vickers hardness ~1,500 HV). They provide extreme resistance to sliding abrasion from fine ore particles at high velocity, delivering service life 5—?0× longer than rubber in appropriate applications. The ceramic tiles are bonded to a rubber backing that absorbs impact and prevents the brittle ceramic from fracturing under load.
| Parameter | Specification |
|---|---|
| Ceramic composition | 92% Al₂O—?(alumina) —?standard; 95% available on request |
| Ceramic hardness | ~1,500 HV (Vickers) —?extremely hard |
| Ceramic density | 3.6 g/cm³ |
| Ceramic thickness | 6, 8, 10, 12, 15mm |
| Rubber backing | NR/SBR compound, 8—?5mm thick |
| Total liner thickness | 14—?7mm |
| Tile size (standard) | 20×20, 25×25, 30×30, 50×50mm square tiles |
| Mosaic backing | Pre-tiled on rubber sheet —?flexible for curved surfaces |
| Wear resistance vs rubber | 5—?0× longer life in sliding abrasion zones |
| Temperature resistance | Up to 700°C (ceramic only); rubber backing limits to 80°C |
| Chemical resistance | Excellent —?resistant to acids, alkalis, oxidising agents |
| Application Condition | Ceramic Recommended? |
|---|---|
| High-velocity ore flow (>5 m/s across surface) | Yes —?primary choice |
| Fine abrasive ore (silica, alumina, iron ore fines) | Yes —?superior abrasion resistance |
| Chute floor, discharge lip | Yes |
| High-angle impact zone (>60°) | No —?use rubber NR; ceramic fractures under impact |
| Large lump ore (>100mm) | No —?use rubber; lump impact breaks ceramic tiles |
| Temperature >80°C | Yes (ceramic only) —?remove rubber backing |
Most effective transfer chute lining uses both ceramic and rubber —?rubber (NR 45A, 60mm) at the vertical impact zone, transitioning to ceramic tiles (92% Al₂O—? 10mm on rubber backing) at the ore flow zone. This hybrid approach delivers maximum service life in both zones. We design complete hybrid liner packages —?send your chute drawing for a free zone-by-zone recommendation.
Send us your application details. We respond within 24 hours with specification and price.
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