The Crushing and Sand-Making Industry: A Comprehensive Overview
The global demand for sand and gravel has surged due to rapid urbanization and infrastructure development. Natural sand reserves are depleting, making manufactured (artificial) sand a sustainable alternative. Chennai, a major construction hub in India, faces rising demand for high-quality artificial sand, driving investments in crushing and sand-making plants.
Modern sand-making lines integrate multiple stages:
1. Primary Crushing – Jaw or gyratory crushers break large stones into smaller fragments.
2. Secondary/Tertiary Crushing – Cone or impact crushers refine material to 20–40mm.
3. Sand Making – Vertical Shaft Impact (VSI) crushers shape fine aggregates (0–5mm) with optimal gradation.
4. Screening & Washing – Removal of impurities ensures compliance with IS 383/BS standards.
Key equipment includes:
– Raw material (granite/basalt vs. limestone)
– Production capacity (50–300 TPH plants)
– Fuel and labor costs
Q1: How does artificial sand compare to natural sand?
A: Manufactured sand has better gradation, fewer impurities, and higher compressive strength but requires proper washing to control microfines.
Q2: What’s the ROI for a 200 TPH sand plant in Chennai?
A: With stable demand, ROI is typically 18–24 months, assuming a selling price of ₹900/ton and production cost of ₹500/ton.
Q3: Which rocks are unsuitable for sand-making?
A: Soft rocks (e.g., sandstone) may generate excess fines, while high-silica rocks require dust control measures.
Client: A Chennai-based infrastructure firm
Challenge: Produce 250 TPH of M-Sand for highway construction.
Solution:
Result: Reduced dependency on river sand; 22% cost savings for the client.
The crushing and sand-making sector is pivotal for sustainable construction. Strategic equipment selection and adherence to quality standards are critical to capitalize on Chennai’s growing market.
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