Brown coal (lignite) requires specialized crushing equipment due to its high moisture content and soft structure. A roll crusher is ideal for this application, offering high throughput with minimal fines generation.
– Dual-Roll Design: Crushes material between two counter-rotating rolls, ensuring uniform particle size.
– Adjustable Gap: Allows control over output size (typically 10–50 mm for brown coal).
– Wear-Resistant Materials: Rolls coated with manganese steel for extended service life.
| Model | Roll Diameter (mm) | Capacity (t/h) | Power (kW) | Output Size (mm) |
|————-|——————–|—————-|————|——————|
| RC-1000 | 1000 | 50–80 | 55 | 10–30 |
| RC-1500 | 1500 | 100–150 | 110 | 15–50 |
Roll crushers can be paired with vibrating screens and conveyors to create a complete crushing circuit. For brown coal preprocessing, they often feed into drying systems or briquetting plants.
Q: How to reduce moisture-related clogging?
A: Preheat the feed or install scrapers to clean rolls.
Q: What maintenance is required?
A: Inspect roll surfaces monthly and replace wear parts every 6–12 months.
A German power plant deployed two RC-1500 crushers to process 120 t/h of brown coal, achieving a consistent 25-mm output for fluidized-bed combustion. Downtime was reduced by 30% compared to hammer crushers.
For abrasive materials, consider hybrid roll designs with carbide inserts. Always consult manufacturers for site-specific solutions.
