Basalt is a hard, wear-resistant rock that serves as an excellent raw material for construction aggregates. For a production requirement of 150 tons per hour (tph) with a finished product size of 0–20 mm, a two-stage crushing process offers the most cost-effective and efficient solution. This compact production line design not only lowers initial equipment investment costs but also reduces daily energy consumption and wear on consumable parts.

During production, large basalt raw materials are first evenly fed by a vibrating feeder into a jaw crusher for primary crushing, reducing the material to a suitable size for the subsequent intermediate and fine crushing stages. The material is then conveyed to a surge bin for buffering before being fed into a cone crusher for secondary crushing. Given the high hardness of basalt, utilizing a cone crusher that operates on the principle of inter-particle (lamination) crushing effectively minimizes wear on consumable parts and extends the equipment's service life.

The crushed material then enters a circular vibrating screen for precise sizing. Finished aggregates meeting the 0–20 mm specification are conveyed directly to the product stockpile, while oversized particles (larger than 20 mm) are returned to the cone crusher via a return conveyor. This creates a closed-loop system that continues until all material meets the target particle size. The entire production line can be equipped with dust suppression and noise reduction systems; this ensures a stable output of 150 tph while maintaining environmentally friendly operations, ultimately yielding high-quality sand and aggregate with excellent particle shape and optimal gradation.