Application of Polyurethane Screens in Construction Sand and Gravel Sieving Revolutionizing Sieving with Polyurethane Screens

• Insufficient Wear Resistance: Metal sieves suffer rapid wear due to the abrasive action of sand and gravel, necessitating frequent replacements (as often as 5-8 times per month in sand and gravel plants), which elevates maintenance costs and hampers production efficiency.
• Susceptibility to Clogging with Wet Sand: When sieving sand and gravel with high moisture content, metal sieves experience high clogging rates, reducing sieving efficiency by 20%-30% and compromising particle size uniformity.
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• Exceptional Wear Resistance: The integration of wire rope skeletons with polyurethane material imparts 8-10 times the wear resistance of metal sieves, extending their lifespan to over six months.
• Outstanding Anti-Clogging Performance: The 140° cone-angle sieve hole design coupled with high water permeability enhances wet sand sieving efficiency by 35%, as evidenced in coastal sand and gravel applications.
• Precise Sieving Control: The mold casting process ensures precise aperture sizing, and customized sieve holes cater to various engineering standards (e.g., classifying 0-30mm sand and gravel into 5-10mm, 10-20mm, and 20-30mm fractions).
• Shock Absorption and Noise Reduction: Polyurethane's elasticity dampens vibrations, diminishing noise by 5-20 decibels and prolonging equipment lifespan.
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Requirement: Precisely classify mixed sand and gravel within the 0-30mm range into three grades: 5-10mm, 10-20mm, and 20-30mm.

Solution: Utilization of square swing sieves equipped with polyurethane anti-clogging sieves.

Results:

• Sieving Accuracy: Achieved 97.5% accuracy for coarse aggregates above 20mm.
• Efficiency Gain: Reduced screen replacement time from 2 hours to 15 minutes, slashing annual maintenance downtime by 500 hours.
• Energy Savings: Decreased unit power consumption from 1.2kW·h/ton to 0.78kW·h/ton, saving an annual electricity cost of RMB 280,000 for a single line.
• Consistent Quality: Aggregate qualification rate surpassed 98%, and the standard deviation of concrete strength diminished from 4.5MPa to 1.8MPa.

With escalating quality standards for construction sand and gravel and the advocacy of environmental protection policies, polyurethane sieves are poised to further supplant traditional equipment, fostering efficient and low-carbon production within the industry.

Annie Lu
Huatao Group
Email: annie.lu@huataogroup.com
Mobile: 0086 18032422676 (WhatsApp/WeChat)

Main Products: Polyurethane Fine Sieve Panel, Tufflex Screen, Poly Ripple Screen, Shale Shaker Screen, Crusher Machinery