A granite stone crushing plant is designed to process granite rocks into various sizes of crushed stone for construction, road building, and other applications. Below is a structured breakdown of the key components and processes involved:
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1. Granite Crushing Process
# A. Primary Crushing (Jaw Crusher)
– Equipment: Jaw crusher (for coarse crushing)
– Input: Large granite blocks (up to 1,000mm)
– Output: 150–300mm sized stones
– Purpose: Reduces large rocks into manageable sizes.
# B. Secondary Crushing (Cone Crusher / Impact Crusher)
– Equipment: Cone crusher (for hard granite) or impact crusher (for softer granite)
– Input: 150–300mm stones from primary crushing
– Output: 20–70mm aggregates
Purpose: Further reduces size for finer applications.
# C. Tertiary Crushing (VSI Crusher for Sand Making)
– Equipment: Vertical Shaft Impact (VSI) crusher
– Input: 20–70mm aggregates
– Output: 0–5mm manufactured sand (M-sand)
– Purpose: Produces high-quality sand for concrete and asphalt.
# D. Screening & Grading
– Vibrating screens separate crushed granite into different sizes:
– 0–5mm (sand)
– 5–10mm, 10–20mm, 20–40mm (aggregates)
– Oversized material is recycled back to crushers.
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2. Key Equipment in a Granite Crushing Plant
| Equipment | Purpose |
|———–|———|
| Jaw Crusher | Primary crushing of large granite blocks |
| Cone/Impact Crusher | Secondary crushing for medium-sized stones |
| VSI Crusher | Sand making for fine aggregates |
| Vibrating Feeder | Uniform feeding into crushers |
| Vibrating Screen | Size separation of crushed materials |
| Belt Conveyor | Transporting materials between stages |
| Dust Control System | Minimizes airborne particles |
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3. Final Products & Applications
– Coarse Aggregates (10–40mm)
→ Used in concrete, road base, railway ballast.
– Fine Aggregates (5–10mm)
→ Used in asphalt, prec