Coal pulverization grinding mill
In coal-fired power plants and other heavy industries, efficient pulverization is key to maintaining consistent fuel supply and meeting emission standards. Challenges such as high energy consumption and maintenance demands necessitate advanced technology to ensure continuous, reliable operation.
Consistent throughput with reduced power consumption
The Raymond Ball Race Mill by Schenck Process is a relatively low-maintenance grinding system designed to provide consistent throughput of pulverized coal, ranging from 10 to 40 metric tons per hour. What sets this mill apart is its unique design that maximizes grinding mass and the rubbing of coal particles against each other, minimizing metal contact. The absence of bearings in the coal flow path reduces the need for frequent inspection, leading to high availability. It handles a range of fineness from 70% passing 75 microns (200 mesh) and efficiently adjusts fineness by altering the rotor speed. Additionally, the mill is adept at handling high-moisture and high-ash coal without reducing throughput, thanks to its carefully designed hot air flow path and grinding zones. The mill’s grinding elements consist of top and bottom rings and large diameter hollow balls, which uniformly wear and retain their spherical shape, resulting in consistent product fineness throughout the lifespan.
Benefits
- Reduced power consumption compared to tube mills
- Minimal maintenance requirements
- Handles high-moisture and high-ash coal effectively
- Adjustable fineness for varied applications
- Consistent product quality throughout the lifecycle