Attrition Scrubber Unit
High-shear particle-on-particle scrubbing unit designed to strip clay films, iron oxide coatings (Fe₂O₃), and tough surface impurities from silica sand grains prior to classification and flotation.
Engineered for producers selling on purity — stripping surface contaminants so your sand meets strict lab report thresholds.
Raw silica feed carries iron oxide coatings, clay films, and organic contamination that gravity washing alone leaves behind. This plant integrates mechanical attrition scrubbing ahead of classification specifically to scour surface contamination, ensuring your final output consistently meets the tighter SiO₂ and Fe₂O₃ spec limits demanded by glass, foundry, and ceramic buyers.
DISCUSS YOUR PROJECT99.4%+ SiO₂ Purity
Mechanical scrubbing strips iron-oxide and clay films gravity washing misses.
Tight Spec Control
Hydrocyclone classification maintains exact gradation bands on every batch.
<8% Moisture Output
Dewatering stage reduces stockpile moisture, cutting transport weight and drying fuel.
MACHINERY SPECIFICATIONS
| Parameter | Specification |
|---|---|
| Throughput Capacity | 30 to 100 Tons Per Hour (t/h) |
| Optimal Operating Density | 70% to 75% Solids by Weight |
| Drive Motor Power | 22 kW to 75 kW per twin-cell module |
| Shaft Impeller Speed | 280 to 450 RPM (Adjustable via VFD) |
| Residence Time | 4 to 10 Minutes (Based on cell count) |
| Impeller Metallurgy | High-Chrome Cast Alloy / Molded Polyurethane |
| Tank Body Construction | Heavy Steel Tank with 8mm Hot-Vulcanized Rubber Lining |
INDUSTRIES THIS PLANT SERVES
Silica Sand Iron Staining (Fe₂O₃) Stripping
Solar & Glass Grade Quartz Sand Purification
Foundry Sand Reclaiming & Resin Stripping
Clay Film Removal from Industrial Minerals
Beach Sand
China Clay & Kaolin
Foundry Sand
Frac Sand & Proppant
Heavy Mineral Sands
Alluvial Gold
GOT QUESTIONS? WE HAVE ANSWERS.
Q·01 Why is ultra-high pulp density (70–75% solids) mandatory for attrition scrubbing?
High solids concentration ensures sand grains are packed tightly together, forcing particle-on-particle friction under impeller shear rather than liquid slurry washing.
Q·02 How does attrition scrubbing reduce iron oxide (Fe₂O₃) content?
Intense inter-particle friction mechanically scours brittle surface coatings (hematite/goethite staining) off the hard quartz grains without crushing the sand particles.
Q·03 How many scrubbing cells are required for glass-grade sand?
Typically 4 to 6 cells in series are specified to provide 6 to 10 minutes of total slurry retention time for thorough surface decontamination.
Q·04 How are the impellers protected against abrasive slurry wear?
Impellers are cast from ultra-high-chrome alloy (27% Cr) or molded over heavy steel cores with thick polyurethane for long operational wear life.
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"Vyom is an outstanding engineering partner for sand washing plants. Commissioning was fast, and the fines recovery efficiency exceeded our performance targets."
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