Coal mining generates significant environmental pollution, including dust, wastewater, and land degradation. These pollutants can affect nearby sand and gravel production lines, necessitating robust equipment solutions to maintain efficiency while minimizing environmental impact.
Specialized crushing plants are designed to handle coal-contaminated aggregates. Key equipment includes:
– Jaw Crusher: Primary crushing with 50-1,500TPH capacity, handling feed sizes up to 1,500mm.
– Impact Crusher: Secondary processing with hydraulic adjustment (30-800TPH).
– Vibrating Screen: Multi-layer screening (3YK3070 model with 50-800t/h throughput).
| Equipment | Key Parameters |
|---|---|
| Jaw Crusher | Feed size: ≤1,500mm, Power: 160-400kW |
| Cone Crusher | Capacity: 70-700TPH, CSS range: 6-38mm |
| Sand Washer | Water consumption: 10-100m³/h, Output: 20-350t/h |
Q1: How to reduce dust in coal-impacted aggregate processing?
A: Implement closed-circuit crushing with bag filters (99% efficiency) and water spray systems.
Q2: What’s the optimal solution for clay-contaminated materials?
A: Use log washers or attrition scrubbers before crushing, with throughput up to 400t/h.
A Shanxi coal mine rehabilitation project deployed:
– Primary mobile jaw crusher (MC-160P)
– Tertiary cone crusher with dust suppression
– Sand recovery system achieving 95% water recycling
This configuration processed 800TPH of contaminated material into high-quality construction aggregates meeting GB/T14685 standards. The system reduced water consumption by 60% compared to traditional methods.
