In the high-demand world of infrastructure and construction, granite remains a top-tier material due to its hardness and durability. However, its high abrasive nature poses a challenge for equipment longevity. If you are looking to process 630mm feed size into high-quality 0-5mm and 5-20mm products at a rate of 100-200 tons per hour (TPH), a specialized technical approach is required.
1. The Challenge of Granite Crushing
Granite contains high silica content, making it “tough” on machinery. Using the wrong equipment—such as impact crushers for primary stages—leads to rapid wear of blow bars and high maintenance costs. A professional three-stage crushing process is the industry standard for balancing cost and output quality.
2. Optimized 100-200 TPH Process Flow
To achieve the 0-5-20mm output from a 630mm feed, the following flow ensures maximum uptime:
- Primary Crushing (The “Muscle”): A Jaw Crusher (e.g., PE-750×1060) reduces the 630mm raw granite down to <150mm. Its deep crushing cavity and heavy-duty jaw plates are designed for high-compression strength materials.
- Secondary Crushing (The “Core”): A Cone Crusher (Single or Multi-cylinder) takes the mid-sized rocks. Unlike impact crushers, cone crushers use lamination principles to crush hard rock, significantly reducing the wear cost per ton.
- Tertiary Shaping/Sanding (The “Refiner”): To meet the 0-5mm sand and 5-20mm aggregate requirement, a VSI (Vertical Shaft Impact) Crusher is used. This stage “shapes” the rocks to remove flaky edges and produces high-quality manufactured sand.
- Screening: A multi-deck Vibrating Screen separates the final products. Any material >20mm is returned to the circuit for re-crushing (Closed-loop system).
3. Key Equipment Specifications
| Stage | Recommended Equipment | Function |
|---|---|---|
| Feeding | Vibrating Feeder | Uniform feeding & pre-screening |
| Primary | PE Series Jaw Crusher | Handles 630mm input |
| Secondary | HP/HST Cone Crusher | High-efficiency hard rock reduction |
| Tertiary | VSI Series Sand Maker | Shaping & 0-5mm production |
4. Why This Configuration Works
- Lower OPEX: By utilizing a Cone Crusher for the bulk of the reduction, you save up to 40% on wear-part costs compared to traditional setups.
- Superior Grain Shape: The VSI “shaping” ensures the 5-20mm gravel is cubical, which is a requirement for high-strength concrete (C50+).
- Versatility: This 100-200 TPH scale is the “sweet spot” for medium-sized quarries, offering a quick Return on Investment (ROI).
Conclusion
Building a granite crushing plant isn’t just about breaking rocks; it’s about optimizing the cost per ton. By combining the raw power of a Jaw Crusher with the precision of a Cone and VSI Crusher, you ensure a steady supply of 0-5-20mm aggregate that meets the strictest construction standards.