Sand making is a critical process in construction and infrastructure projects. With the increasing demand for high-quality sand and environmental restrictions on river sand mining, quarry crushing machines have become essential for producing artificial sand (mechanism sand). This article analyzes quarry crushing machines used for sand making, focusing on their types, working principles, and advantages.
Types of Quarry Crushing Machines for Sand Making
- Jaw Crusher (Primary Crushing)
- Typically used as the first-stage crusher for coarse crushing of large rocks (up to 1200mm).
- Breaks down hard materials like granite and basalt into smaller pieces (around 125mm).
- Secondary Crushers (Intermediate Crushing)
- Impact Crusher: Suitable for softer rocks like limestone, producing well-shaped aggregates with fewer fines.
- Cone Crusher: Ideal for harder materials (e.g., basalt, granite), known for high efficiency and low wear.
- Sand Making Machines (Final Stage)
- Vertical Shaft Impact Crusher (VSI): Uses “rock-on-rock” or “rock-on-iron” crushing principles for fine shaping and superior particle grading.
- VSI6X Impact Crusher: Advanced version with higher throughput (e.g., 150 tons/hour) and improved wear resistance.
Working Principle
The typical sand-making production line follows these steps:
- Primary Crushing: Jaw crusher reduces large rocks to manageable sizes.
- Secondary Crushing: Cone crusher or impact crusher further refines the material.
- Sand Making: VSI crushers crush stones into finer, well-graded sand.
- Screening & Processing: Vibrating screens separate sand into different sizes, while washing removes impurities.
Advantages of Mechanism Sand Production
- Quality Control: Produces sand with adjustable fineness modulus, better particle shape (cubic), and lower clay content compared to river sand.
- Sustainability: Utilizes waste materials like tailings, steel slag, and construction debris, reducing environmental impact.
- Cost-Effective: Reduces dependency on natural sand and lowers transportation costs.
Quarry crushing machines play a pivotal role in modern sand production. The choice of crushers (jaw, cone, impact, or VSI) depends on material hardness, production capacity, and final sand requirements. With optimized crushing processes, manufacturers can produce high-quality mechanism sand efficiently while promoting environmental sustainability.