Granite Block Processing and Sand Aggregate Industry in Tamil Nadu
The granite quarrying industry in Tamil Nadu is a significant contributor to India’s construction and infrastructure sectors. Known for its high-quality granite reserves, Tamil Nadu supplies raw blocks to domestic and international markets. However, the processing of granite into usable materials—such as crushed stone, sand, and aggregates—requires advanced crushing and sand-making equipment to meet the growing demand for construction-grade materials.
Core Equipment for Granite Processing
1. Jaw Crushers: Primary crushing of large granite blocks into smaller pieces (100–300 mm).
2. Cone Crushers: Secondary crushing to produce finer aggregates (20–50 mm).
3. Vertical Shaft Impact (VSI) Crushers: Tertiary stage for manufacturing high-quality manufactured sand (M-Sand) with optimal gradation.
4. Vibrating Screens: Sorting crushed materials into specific sizes for concrete, road base, or railway ballast.
5. Sand Washing Systems: Removing impurities to enhance the quality of M-Sand for premium applications like RCC work.
Industry Challenges and Solutions
FAQ Section
Q1: Why is M-Sand preferred over river sand in Tamil Nadu?
A: M-Sand offers consistent gradation, zero silt content, and eco-friendly production, unlike scarce river sand.
Q2: What is the typical output of a 200 TPH granite crushing plant?
A: Approximately 70% aggregates (6–20 mm) and 30% M-Sand (0–6 mm), adjustable via screen configurations.
Q3: How to mitigate blade wear in VSI crushers for granite?
A: Use tungsten carbide-tipped rotors and ensure proper feed size (<50 mm) to extend lifespan.
Project Case: Coimbatore Highway Construction
A Tamil Nadu-based contractor deployed a 250 TPH crushing plant with a jaw-cone-VSI combo to produce 1.2 million tons of aggregates and M-Sand for a 60-km highway. The setup reduced reliance on river sand by 40% and completed the project 3 months ahead of schedule.
Conclusion
With stringent quality standards and sustainability goals, Tamil Nadu’s granite processing sector is adopting smarter crushing technologies to optimize resource use and support India’s infrastructure growth. Customized plant designs and robust after-sales service are critical for long-term profitability in this competitive market.
