The construction industry increasingly adopts quarry dust as a sustainable alternative to natural sand in concrete and asphalt mixes. This shift demands specialized crushing and sand-making equipment to optimize particle gradation and shape.
Our V7-100 Dry Sand Making System achieves 0-3mm fine aggregate with <5% moisture content:
– Capacity: 50-120t/h
– Power: 355kW×2
– Finished product: ≤4.75mm (adjustable)
The system integrates air screening, impurity removal, and stone powder control modules.
Typical 200tph plant layout:
1. Primary Jaw Crusher (PE750×1060)
2. Secondary Cone Crusher (HPT300)
3. Tertiary Impact Crusher (VSI1140)
4. Airflow Screening System
5. Intelligent Control Cabinet
| Parameter | Quarry Dust | Natural Sand |
|---|---|---|
| Fineness Modulus | 2.6-3.0 | 2.3-2.6 |
| Clay Content | <1% | 3-8% |
| Value | <1.0 | >1.4 |
Q: Does quarry dust affect concrete strength?
A: Properly processed quarry dust can increase compressive strength by 10-15% due to better particle interlocking.
Q: How to control powder content?
A: Our systems feature patented wind screening technology maintaining powder content at 7-12%.
Client replaced river sand completely with our manufactured quarry dust:
– Annual output: 800,000 tons
– Concrete grade achieved: C50
– Equipment ROI period: 14 months
The production line demonstrates how modern crushing technology transforms waste rock into high-value construction materials while solving natural resource depletion issues.
