how does frac sand wash plant work

How Does a Frac Sand Wash Plant Work?

A frac sand wash plant is designed to process raw silica sand into high-purity frac sand used in hydraulic fracturing. The plant typically includes crushing, screening, washing, and dewatering stages to meet industry standards (API/ISO).

Key Equipment in a Frac Sand Wash Plant

1. Primary Crusher: Reduces raw sandstone to 50-100mm (e.g., Jaw Crusher, capacity: 50-500 TPH).
2. Log Washer: Removes clay and impurities (Model: LW-36, throughput: 200 TPH).
3. Vibrating Screen: Classifies sand by size (Mesh: 20-70, efficiency: 95%).
4. Attrition Scrubber: Further cleans sand surfaces (Power: 30-75 kW).
5. Hydrocyclones & Dewatering Screens: Achieve moisture content <8%.

Equipment Key Parameter
Log Washer 200 TPH, 45 kW motor
Dewatering Screen 10×4 ft, 7.5 kW
Hydrocyclone Φ250mm, 99% efficiency

FAQ

Q1: What’s the final product size?
A: Typically 40/70 or 100 mesh (0.15-0.4mm).

Q2: How to control moisture?
A: Use dewatering screens + thermal dryers (<1% moisture optional).

Engineering Case

A Texas-based plant upgraded to a 500 TPH system, achieving:
– Output: 98% API-compliant frac sand.
– Water Recycling: 90% reused via closed-loop design.

Knowledge