double roll rotary breaker specification

Double Roll Rotary Breaker Specifications

The double roll rotary breaker is a robust machine designed for the efficient reduction of coal, shale, and other friable materials. Its primary function is to break down oversized material while minimizing fines generation, making it ideal for coal preparation plants, mining operations, and mineral processing facilities. Below are the key specifications and features of this equipment.

Design and Construction
The double roll rotary breaker consists of two rotating drums with perforated surfaces. The drums are mounted on a sturdy frame and rotate in opposite directions. As material enters the breaker, it is lifted by the rotating action and dropped repeatedly until it breaks into smaller pieces that pass through the perforations. The machine is constructed from high-quality abrasion-resistant steel to ensure durability in harsh operating conditions.

Key Specifications
- Capacity: Ranges from 50 to 500 tons per hour (TPH), depending on material characteristics and feed size.
- Feed Size: Typically handles input sizes up to 300 mm (12 inches).
- Product Size: Adjustable discharge size, usually between 25 mm (1 inch) and 100 mm (4 inches), based on screen openings.
- Power Requirements: Driven by electric motors ranging from 15 kW to 75 kW, depending on model size.
- Rotation Speed: Operates at speeds between 10 to 20 RPM for optimal breakage efficiency.
- Dimensions: Vary by model but generally range from 3 meters to 6 meters in length and 1.5 meters to 3 meters in diameter per drum.

Applications
Double roll rotary breakers are widely used in coal processing plants to remove rock and other impurities while preserving coal quality. They are also employed in aggregate production, oil sands processing, and industrial mineral applications where controlled size reduction is required.

Advantages
- Low fines generation compared to impact crushers or hammer mills.
- Self-cleaning action reduces clogging risks.
- Minimal maintenance requirements due to simple mechanical design.
- Adjustable screen openings allow customization for different product sizes.

For optimal performance, proper installation and regular maintenance are essential. Operators should ensure even feed distribution and monitor wear on perforated screens to maintain efficiency over time. This equipment remains a reliable choice for industries requiring gentle yet effective material sizing solutions.