Q
Can a Hydraulic Double Roller Crusher effectively control the stone powder content in river pebble sand?
Yes, and this is a major advantage over traditional impact methods. For river pebbles, excessive stone powder often ruins the sand quality. Our solution uses Controlled Gap Extrusion, which avoids the “over-crushing” effect common in high-speed machines.
- 💎 Targeted Gradation: The dual rollers create a “crushing zone” where the stone is only pressed until it reaches the set gap, significantly reducing superfine dust (< 0.075mm).
- 💎 Adjustable Fineness: By simply adjusting the hydraulic pressure and roller gap, you can shift the production focus between 0-3mm and 3-5mm sand on the fly.
- 💎 Higher Fineness Modulus: The resulting sand has a stable fineness modulus (2.6-3.0), which is the “Gold Standard” for high-performance concrete.
Plant Feedback: Our clients in the infrastructure sector report that roller-made pebble sand requires less cement in their mix designs due to the optimized particle distribution.
