The processing of quartz silica sand into high-purity industrial materials requires specialized crushing and grinding equipment. Raw quartz ore undergoes primary crushing, secondary refinement, and fine grinding to achieve desired particle sizes (typically 20-200 mesh). Key equipment includes jaw crushers, cone crushers, and vertical shaft impactors (VSIs) for shaping.
| Equipment | Model | Capacity (t/h) | Power (kW) |
|---|---|---|---|
| Jaw Crusher | PE-600×900 | 50-120 | 75 |
| Cone Crusher | HPT300 | 100-250 | 315 |
| VSI Crusher | S8-1145 | 60-180 | 250×2 |
| Ball Mill | MQY2740 |
High-frequency screens (e.g., YK2460 with 22kW motor) separate particles by size, while hydrocyclones remove ultrafines (<325 mesh). Dust collectors (pulse-jet type) maintain air quality below 20mg/m³.
Critical wear parts like VSI rotors use tungsten carbide tips (HRC≥85), extending service life to 800+ hours in silica applications. Lined chutes with ceramic tiles reduce maintenance downtime.
*Q: How to reduce iron contamination?
A: Use alumina grinding media (+99% Al₂O₃) instead of steel balls in final grinding stages.
*Q: Optimal moisture content?
A: Keep below 5% before dry screening; rotary dryers may be needed in humid climates.
A Malaysian plant achieved 98% SiO₂ purity using:
1. Two-stage crushing (jaw
