With the continuous growth of demand for sand and gravel aggregates in the infrastructure industry, medium-sized stone plants with a capacity of 200 tons/hour (200tph) have become the mainstream choice. This article will analyze the standardized configuration plan from four aspects: raw material characteristics, equipment selection, process flow and environmental protection requirements.
1. Analysis of raw material characteristics and production needs
Raw material type: medium and high hardness stones such as granite and limestone require heavy crushing equipment; low hardness materials such as shale can be equipped with impact crushers.
Feed particle size: The maximum feed size is recommended to be ≤650mm, and coarse crushing pretreatment is required if it exceeds.
Finished product requirements: The conventional requirements are four specifications of 0-5mm, 5-10mm, 10-20mm, and 20-31.5mm.
2. Core equipment selection and parameters
The following is a typical configuration of a 200tph production line:
| Equipment name | Model/specification | Power (kW) | Processing capacity (tph) |
| Vibrating feeder | GZD-1100×4200 | 7.5×2 | 250-300 |
| Jaw crusher (coarse crushing) | PE-750×1060 | 110 | 150-220 |
| Cone crusher (medium crushing) | HPT-300 | 250 | 180-240 |
| Vertical shaft impact crusher (sand making) | VSI-1140 | 315 | 100-150 |
| Circular vibrating screen | 3YK-2460 | 30 | 200-250 |
| Belt conveyor | B=800mm | 7.5-15 | - |
3. Process design
It is recommended to adopt the "two-stage one closed circuit" or "three-stage crushing" scheme:
Primary crushing section
The vibrating feeder evenly feeds the material to the jaw crusher to crush the raw material to ≤200mm.
Medium and fine crushing section
The cone crusher performs secondary crushing, and the discharge particle size is ≤50mm.
Screening and sand making section
After classification by the vibrating screen, materials >31.5mm return to the cone crusher for closed-circuit circulation;
The materials that need to be sanded enter the vertical shaft crusher for shaping, and the fineness modulus of the finished sand can be controlled at 2.6-3.0.
4. Key supporting systems
Dust removal system
The pulse bag dust collector (handling air volume ≥20000m³/h) covers the entire crushing and screening process.
Intelligent control
Equipped with a PLC automatic control system, real-time monitoring of current, temperature, vibration and other parameters, and a production capacity error of ≤3%.
Noise reduction solution
Shock-absorbing pads are installed on the equipment foundation, and the factory boundary noise is ≤65dB (A).
