Silica sand processing requires efficient removal of clay and mud impurities to meet industrial standards. A well-designed crushing and sand-making production line ensures high-purity output for construction, glass, and foundry applications.
1. Log Washer:
– Capacity: 50-200 t/h
– Motor Power: 30-110 kW
– Removes sticky clay through intense scrubbing
2. Attrition Scrubber:
– Tank Volume: 2-15 m³
– Rotor Speed: 60-120 rpm
– Breaks down clay coatings on sand particles
3. Hydrocyclone System:
– Diameter: 250-500 mm
– Separation Efficiency: >90%
4. Dewatering Screen:
– Mesh Size: 0.1-2 mm
– Water Content Reduction: ≤10%
Raw ore → Jaw crusher (coarse crushing) → Cone crusher (fine crushing) → Log washer → Attrition scrubber → Hydrocyclone → Dewatering screen → Finished sand.
Q1: How to prevent silica sand loss during washing?
A: Optimize hydrocyclone pressure (0.1-0.3 MPa) and use fine-mesh dewatering screens.
Q2: What’s the ideal clay content after processing?
A: For glass-grade sand, aim for <0.5% clay content.
Project: Vietnam silica sand plant
Challenge: High clay content (15%) in raw material
Solution: Implemented log washer + two-stage hydrocyclone system
Result: Final product achieved 99.2% SiO₂ with <0.3% clay content
