Louver Ring Retrofits

For Improved Efficiency of Vertical Roller Mills

louvre ring retrofit

The design of the louver ring and armor ring plays a significant role in the performance of vertical roller mills. As the first classification stage takes place just above the louver ring, proper louver ring assembly should:

  • Guide flow at upward incline with the armor ring
  • Direct large particles back to the table
  • Distribute flow evenly around the table
  • Minimize the pressure drop
  • Minimize high localized wear
  • Manage the reject material stream

Bradley Louver Ring Retrofit Solution

The Bradley Enhanced Louver Ring is designed for increased capacity and power reduction through improved grinding efficiency. To optimize results from a vertical roller mill, uniform gas flow distribution across the mill and classifier at any level is essential.

louvre ring designBradley enhanced louver ring designadvantages to louver ring redesign


Conventional Louver Rings Vs. Bradley Enhanced Louver Rings

Conventional louver rings cannot equalize pressure and flow around the table. The unique Bradley Enhanced Louver Ring design regulates flow around the table to match the demands of the mill resulting in efficient operation and higher production rates.
Conventional Bradley
Wear on Mill Body & Internals up arrow down arrow
Internal Recirculation up arrow down arrow
Fan Drive Power up arrow down arrow
Operating Costs up arrow down arrow
Production Rate down arrow up arrow

CFD Diagrams of Louver Ring Modifications

 

Conventional Louver Ring Design
Conventional Louvre Ring Design
Bradley Enhanced Louvre Ring Design
Bradley Enhanced Louvre Ring Design
 

Call 855-670-8777 (International: +44 1322-559-106) or Contact Us to discuss ways we can optimize your vertical roller mill with a louver ring retrofit