The sand and gravel production project involves processing raw materials like river pebbles or rocks into high-quality construction aggregates. A typical production line includes crushing, screening, sand making, and sometimes washing processes to meet various construction standards. For processing hard materials like granite or basalt, cone crushers are often used in secondary crushing stages to ensure efficient size reduction with low wear costs.
The project design focuses on producing uniformly graded sand with good particle shape that fully complies with national construction sand standards (GB/T 14684-2001). Modern production lines utilize multi-stage screening systems with vibrating screens like the S5X series to precisely separate different particle sizes (0-5mm, 5-40mm etc.), while oversized materials are recirculated for further crushing.
Core equipment typically includes primary jaw crushers for coarse crushing (like PE series), hydraulic cone crushers (HPT series) for intermediate crushing, and vertical shaft impact crushers (VSI6X series) for final shaping and sand making. The production capacity can range from 100 tons/hour to over 2000 tons/hour depending on configuration.
The process begins with raw material extraction, followed by crushing, screening, and washing. Advanced equipment, such as jaw crushers, cone crushers, impact crushers, and vertical shaft impact (VSI) sand-making machines, ensures efficient processing. The use of multi-stage screening and sand-washing systems guarantees precise control over particle size, cleanliness, and gradation, resulting in high-quality finished products.
The finished products are widely used in infrastructure projects including concrete mixing plants, road bases, bridge construction, and real estate development. With proper equipment selection and process design, these production lines can achieve both economic and environmental benefits, producing qualified machine-made sand that matches or exceeds natural sand performance in concrete applications.