How to select a sand washer for high fines in manufactured sand
For manufactured sand producers in Vietnam – from the granite quarries of Binh Dinh to the basalt deposits in Dak Lak – high fines content (15‑25% passing 0.075 mm) is a common challenge. Excessive fines reduce concrete workability and may cause rejection from ready‑mix plants. Selecting the right sand washer for high fines in manufactured sand is essential to meet TCVN 9205 standards (typically ≤10% passing 0.075 mm). OCP Mechanical Company, a factory‑direct manufacturer with over 40 years of experience, supplies Type W sand washers designed for high‑fines applications, backed by local support and 24/7 online assistance.
Note: Product data are constantly updated; the latest specifications should be confirmed with our online customer service.
Screw washer – a reliable choice for most manufactured sand
A single‑shaft screw washer (Type W) is a widely used solution for reducing fines from 15‑20% down to 6‑10%. The screw agitates sand while fines overflow. Polyurethane wear shoes prevent iron contamination and last 3‑5 times longer than steel. For a 100‑150 tph line, a screw diameter of 1,200‑1,500 mm is common. Many Vietnamese sand plants have successfully used screw washers to meet concrete specifications. All price information in this article is for reference only; contact our team for current, site‑specific quotes.
Hydrocyclone – for stricter fines control
When you need to reduce fines below 6‑8% or recover fine sand down to 0.045 mm, a hydrocyclone (or cyclone + dewatering screen) is a more efficient option. Hydrocyclones use centrifugal force to separate ultrafines, producing a cleaner product. However, they require higher capital investment ($8,000‑$15,000 additional) and skilled tuning. A combination of screw washer followed by hydrocyclone offers the best of both: the screw removes coarse fines, and the cyclone polishes the product.
How to select the right washer for your sand
To select a sand washer for high fines in manufactured sand, consider three factors:
Target fines content – For 6‑10%, a screw washer is sufficient. For <6%, consider a hydrocyclone or combination.
Water availability – Screw washers consume 50‑100 m³/h; a hydrocyclone can recycle water more effectively. Add a settling tank to reuse 80‑90% of water.
Feed gradation – If your sand contains a high proportion of 0‑1 mm material, a screw washer may lose some fine sand. A hydrocyclone recovers more.
OCP’s engineers can test your sand sample and recommend the optimal configuration.
Cost and return on investment
A Type W screw washer for 100 tph ex‑works ranges from $20,000 to $35,000 USD. A hydrocyclone module adds $10,000‑$18,000. Shipping to Ho Chi Minh City or Haiphong adds $4,000‑$8,000. Most Vietnamese sand producers recover the investment within 6‑12 months by selling washed sand at a $2‑$5 per ton premium.
Why OCP is your trusted partner for sand washing in Vietnam
Choosing the right sand washer for high fines in manufactured sand ensures your product meets local standards. OCP Mechanical Company has four decades of experience in sand processing equipment for Southeast Asia. Our 24/7 online team helps with weir adjustment, speed tuning, and troubleshooting. We invite you to request a no‑obligation quote and sample testing.
For a no‑obligation consultation on how to select a sand washer for high fines in manufactured sand, simply click the live chat icon on this page. Our online customer service team is available 24 hours a day, 7 days a week, to provide free price quotes, equipment recommendations, and installation advice – helping you produce specification sand more efficiently and profitably.
