Why Mines Choose Polyurethane?
Modern mines face three long-standing challenges: rapid wear, frequent shutdowns, and continuously rising maintenance costs. High-performance cast polyurethane addresses all three. Over 100+ mines worldwide are using PU linings, panels and elastomer components to reduce unscheduled downtime and extend service life by 3–6 times depending on ore hardness and slurry conditions.
Advantages
- Outstanding wear resistance: Up to 2× that of manganese steel and 5× that of standard rubber under abrasive ore impact
- High impact & corrosion resistance: Stable under -40℃ to +80℃; maintains mechanical properties in acidic/alkaline slurry
- Lightweight & energy-saving: About 30% lighter than metal, reducing equipment load and energy consumption by up to 15%
- Highly customizable: Easily molded for complex shapes in underground transportation, crushing chambers and conveyors; simple installation and replacement
Key Application
Crushing Equipment
- Jaw crusher buffer pads, agitator components
- Impact plate liners (90A): Absorb repeated boulder impact; lifespan 2× longer than Mn steel
- Cone crusher sealing rings: Excellent oil/dust sealing; 5× better resilience than rubber
Mining & Mineral Processing
- Hydrocyclone linings: Vortex finders, spigots, inlet/outlet cones, cover plates, spraying nozzles, feed chambers
- Polyurethane classifier shoes and wear-resistant inserts
Conveying Equipment
- Scraper blades (85A): Anti-static, flame-retardant, excellent chain wear resistance
- Belt conveyor idler rollers
- Chute liners, polyurethane pipe lining, fittings and protective sleeves
Screening Equipment
- Vibrating screen panels: Self-cleaning, anti-clogging; increase screening efficiency by 15%, service life 3–5× longer than metal
- Classifier strips for slurry erosion; 12+ months service in iron concentrate sorting
- Dehydration screen buffers, spiral classifier shoes, lining plates
Safety & Transportation Equipment
- Underground anti-slip pads: ≥0.7 friction coefficient even in wet zones; reduces accident risks
- Mine cart wheels (90A): Shock-absorbing; polyurethane wheels for monorail systems
| Cast Polyurethane Product | Mining Application Process | Applied Equipment | Core Functions | Key Performance Advantages | Typical Ore/Working Conditions |
|---|---|---|---|---|---|
| Polyurethane Hydrocyclone Liners | Mineral classification, desliming & dewatering | Hydrocyclones (50–1200 mm) | Protect walls from slurry erosion; enhance separation accuracy | 3–5× wear resistance vs rubber/metal; pH 2–12 corrosion resistance; smooth surface prevents adhesion | Iron, copper, gold ores; 30%–60% slurry concentration |
| Urethane Vibrating Screen Panels | Screening, classification, dewatering | Linear & dewatering screens | High-efficiency sorting; anti-clogging | Custom openings 0.1–50 mm; 40%–65% open area; 20–30 dB noise reduction | Coal, iron ore, limestone |
| Cast Polyurethane Ball Mill Liners | Grinding protection | Grid & overflow mills | Reduce wear and energy use | 2–5× longer life; lightweight; impact buffering; noise reduction | Ferrous & non-ferrous grinding |
| PU Conveyor Belt Scrapers | Belt cleaning during ore transport | Primary/secondary belt cleaners | Remove residual sticky ore | Non-scratch, integral casting, -40℃ to 120℃ | Coal, iron ore powder |
| Urethane Hoist Friction Pads | Load transfer & hoisting | Mine hoists | Provide stable friction & protect metal | High tensile strength; 3–5× wear resistance vs plastics | Vertical shaft mining |
| Cast Urethane Flotation Cell Liners | Slurry mixing & bubble generation | Mechanical flotation cells | Improve reagent interaction & bubble uniformity | Excellent reagent resistance; 2–3× lifetime vs metal | Copper, nickel, molybdenum ores |
| Polyurethane Magnetic Drum Liners | Protection during magnetic separation | Wet magnetic separators | Wear protection without affecting magnetic field | Non-magnetic; strong impact resistance | Magnetite, hematite |
| PU Monorail Drive Wheels | Underground transportation | Mine monorail systems | Provide traction & load bearing | -30℃ to 130℃; up to 40-ton load capacity | Underground coal & metal mines |
| Cast Polyurethane Shaking Table Liners | Gravity separation | Shaking tables | Enhance mineral stratification | Custom textures; lightweight; non-magnetic | Tungsten, tin, gold ores |
| Urethane Hopper/Chute Liners | Ore transfer & anti-clogging | Feed hoppers & chutes | Ensure smooth ore flow | ≤0.2 friction coefficient; impact-resistant; corrosion-resistant | Iron ore, coal, limestone |
Success Cases
- UK Granite Quarry: 70 mm PU panels processed 2,200 tons/hour granite; screened 1.5 million tons in 12 months—50% longer than warranty, 80% less maintenance.
- China Mining Group: Replaced steel liners with PU; annual maintenance cost reduced by 40%; liner life increased from 2 months to 8 months.
6 Reasons to Choose Us
- 20+ years of polyurethane experience in mining environments
- Free working-condition evaluation & formulation recommendation
- Prototypes in 2 weeks; stable mass-production capacity
- ISO 9001 certified; coal mine safety compliant
- Long-term supplier to national mining corporations
- Lifelong technical support at no extra cost
