Vietnam is a key global producer of kaolin, with extensive deposits in provinces like Binh Thuan and Dong Nai. The mineral’s processing demands precise screening to remove impurities and achieve uniform particle sizes for ceramics, paper coatings, and high-purity alumina production.
HenstarScreen’s polyurethane (PU) screens have been deployed in Vietnamese kaolin mines, addressing critical challenges such as blinding, abrasion, and low efficiency in traditional metal or rubber screens.
Challenges in Kaolin Screening
1. Fine Particle Clogging: Kaolin’s sticky, moist texture (especially in Vietnam’s humid climate) causes rapid blinding in conventional screens, reducing throughput.
2. Abrasive Wear: High silica content in raw kaolin accelerates wear on metal screens, increasing downtime and replacement costs.
3. Environmental Compliance: Vietnam’s stricter mining regulations (e.g., amended Environmental Protection Law) demand dust control and sustainable solutions.
HenstarScreen’s PU Screen Solutions
1. Anti-Blinding Design
Conical Hole Geometry: Prevents kaolin particles from adhering, reducing clogging by 80% compared to woven wire screens.
High Open-Area (30–40%): Boosts screening efficiency by 2–5×, ideal for wet/dry kaolin separation.
2. Superior Durability
Abrasion Resistance: PU screens last 3–5× longer than metal screens in Vietnam’s high-volume kaolin operations, cutting replacement costs by 40%.
Corrosion Resistance: Withstands acidic/alkaline conditions during kaolin washing.
3. Eco-Friendly Performance
Dust Suppression: Integrated seals minimize airborne particles, aligning with Vietnam’s sustainability goals.
Noise Reduction: Vibrational absorption lowers operational noise by 15–20 dB, improving worker safety.
Case Study: Vietnam Kaolin Mine
A Central Highlands kaolin processing plant achieved:
35% Higher Throughput: HenstarScreen’s tensioned PU mesh (5mm aperture) enabled continuous 24/7 operation, processing 500 tons/day of raw kaolin.
60% Less Downtime: Modular PU panels reduced maintenance frequency from weekly to quarterly.
ROI in 8 Months: Saved $12,000/month on screen replacements and energy costs.
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