Granite is one of the most commonly used materials in high-strength concrete, road construction, and infrastructure projects. Due to its high hardness, strong abrasiveness, and dense structure, granite places strict requirements on crushing equipment and process design.

To achieve stable production, high-quality aggregates, and controlled operating costs, granite crushing requires a well-engineered crushing and screening solution, not just powerful machines.

With extensive experience in hard rock applications, LIMING Heavy Industry provides reliable granite crushing solutions for aggregate producers worldwide.

1. Characteristics of Granite in Crushing Applications

Granite is classified as a hard and abrasive rock, which presents several challenges during crushing:

• High compressive strength

• Strong abrasiveness causing rapid wear

• Difficult-to-shape particles

• High demand for stable crushing force

These characteristics make granite unsuitable for simple crushing configurations. Improper equipment selection often leads to excessive wear, low output, and high maintenance costs.

Understanding granite properties is the foundation of an efficient crushing solution.

2. Recommended Granite Crushing Process Design

Primary Crushing: Jaw Crusher

Jaw crushers are widely used as primary crushers in granite crushing due to their:

• Strong crushing force

• Ability to handle large feed sizes

• Stable performance under heavy load

• Simple and robust structure

They effectively reduce large granite blocks into sizes suitable for secondary crushing.

Secondary Crushing: Cone Crusher

For granite applications, cone crushers are the preferred choice for secondary crushing.

Advantages include:

• High crushing efficiency

• Excellent wear resistance

• Stable output capacity

• Uniform particle size distribution

Cone crushers are specifically designed to handle hard and abrasive materials like granite.

Tertiary Crushing and Shaping (Optional)

When high-quality, cubical aggregates are required, additional shaping stages may be added using:

• Fine cone crushers

• Vertical shaft impact crushers (VSI)

These stages improve particle shape while maintaining acceptable wear costs.

3. Screening and Closed-Circuit System

Granite crushing plants typically operate in closed-circuit configurations.

The role of screening includes:

• Precise size classification

• Control of final aggregate gradation

• Prevention of oversized material in final products

• Reduction of unnecessary re-crushing

High-performance vibrating screens ensure stable product quality and efficient plant operation.

4. Granite Crushing Solutions by Production Capacity

Medium-Capacity Granite Plants (250–500 TPH)

Typical configuration:

• Jaw crusher

• Cone crusher

• Vibrating screen

Applications:

• Commercial aggregate production

• Regional construction projects

Large-Scale Granite Crushing Plants (600–1000+ TPH)

Typical configuration:

• Jaw crusher

• Multiple cone crushers (secondary & tertiary)

• Multi-deck vibrating screens

Applications:

• Infrastructure and highway projects

• Large quarry operations

• Continuous high-output production

These systems are designed for long-term, heavy-duty operation.

5. Wear Cost Control in Granite Crushing

Wear parts consumption is a major cost factor in granite crushing.

Effective strategies include:

• Selecting appropriate liner materials

• Optimizing crushing chamber design

• Maintaining uniform feed distribution

• Avoiding overloading and excessive reduction ratios

A properly designed system significantly reduces wear cost per ton.

6. Aggregate Quality Control in Granite Crushing

High-quality granite aggregates require:

• Controlled particle shape

• Consistent gradation

• Minimal fines content

By combining compression crushing with proper shaping stages, granite crushing plants can meet strict construction aggregate standards.

7. LIMING Heavy Industry Granite Crushing Solutions

LIMING Heavy Industry provides complete granite crushing solutions including:

• Customized process design

• High-performance jaw and cone crushers

• Efficient screening systems

• Professional engineering support

Each solution is tailored to material conditions, capacity requirements, and final product specifications.

Conclusion

Granite crushing is a demanding application that requires robust equipment, precise process design, and professional engineering support. With the right crushing solution, aggregate producers can achieve stable output, high-quality products, and controlled operating costs.

By partnering with LIMING Heavy Industry, customers gain access to proven granite crushing solutions designed for long-term success.