For large-scale gravel production lines with a processing capacity of 800-1000tph, it is necessary to build an intelligent system of multi-stage crushing and grading screening, focusing on the configuration design around capacity matching, equipment stability and environmental performance. The following is a recommended solution:

1. Core equipment configuration solution ‌

Coarse crushing system ‌

Configure a heavy-duty gyratory crusher with a processing capacity of 800-1000tph as the primary crushing unit. It is recommended to choose a large feed inlet (≥1200mm) model, which can handle raw materials below 1200mm, and the discharge particle size is controlled at 200-300mm. Compared with traditional jaw crushers, gyratory crushers have the advantage of continuous crushing and are more suitable for large-scale continuous operations.

Medium and fine crushing system ‌

Use two 500-600tph multi-cylinder hydraulic cone crushers in parallel as the secondary crushing core. It is recommended to equip with a full hydraulic control system to realize automatic adjustment of the discharge port (8-50mm adjustable), and cooperate with the lamination crushing principle to improve the needle-like control ability, and the finished product rate can reach more than 85%.

Screening system ‌

Equipped with 3 3YKH3070 heavy-duty vibrating screens to form a three-level screening circuit. The top screen is 40mm to separate the return material, the middle screen is 25mm to screen the finished aggregate, and the bottom screen is 5mm to control the fine material ratio. It is recommended to use polyurethane screens to improve wear resistance, and the matching return belt to achieve closed-loop circulation.

2. Auxiliary system configuration ‌

Feeding system ‌: 2 GZG150-6 heavy-duty plate feeders, with a processing capacity of 600tph/unit, equipped with variable frequency speed regulation function to ensure uniform feeding.

Conveying system ‌: Main belt width ≥1400mm, belt speed 2.5m/s, equipped with anti-deviation device and dust cover.

Dust removal system ‌: Pulse bag dust collector (processing air volume ≥80000m³/h) + spray dust reduction device, emission concentration <10mg/m³.

Intelligent control system ‌: Integrated equipment status monitoring, production statistics and fault warning modules to achieve real-time optimization of crushing ratio and energy consumption.

3. Process optimization suggestions

Crushing stage connection: Set up a buffer silo (capacity ≥ 500m³) after coarse crushing to balance the fluctuation of the crushing capacity of the two stages.

Cost reduction design: The cone crusher and the vibrating screen are modularly arranged to shorten the material transportation distance and reduce the installed power by 15-20%.

Finished product adjustment: By adjusting the screen inclination (15-25°) and the vibration frequency (750-950r/min), the ratio of finished products with multiple specifications of 5-31.5mm can be flexibly controlled.

This configuration can meet the crushing needs of high-hardness materials such as basalt and granite, and the comprehensive power consumption is controlled at 1.8-2.2kWh/t, and the equipment utilization rate can reach more than 90%. It is recommended to reserve 20% capacity redundancy, and maximize production benefits through equipment selection and matching and intelligent control system linkage.