Leizhan Paper Pulp Machinery Company

Excessive plate wear in your double disc refiner can frequently be traced to factors beyond the plates themselves. Contaminants in the pulp stream, such as abrasive sand or tramp metal, act like sandpaper on the plate surfaces. Operational choices, including running at excessively high specific pressure or with an incorrect disc clearance, force the plates to work under brutal mechanical stress, leading to rapid deterioration. Thermal stress from insufficient cooling or lubrication is equally damaging. Perhaps most detrimental are poor operational habits, like repeated on/off cycling or initiating rotation before stock entry, which subject the plates to destructive dry friction and shock loads.

Implementing a holistic prevention strategy is the remedy. Begin by fortifying your stock preparation line with reliable cleaners and screens to remove hard impurities before they reach the refiner. Re-evaluate and optimize your refining intensity parameters—adjusting pressure, flow, and gap to achieve the desired pulp properties without overloading the plates. Rigorously maintain the thermal management system, checking coolant flow rates and pressures regularly. Finally, enforce disciplined operational standards: minimize process interruptions and guarantee a full stock flow through the refiner before every startup sequence to ensure hydrodynamic lubrication from the very first revolution.

Invest in a refining system built for durability and supported by expert process knowledge. Our double disc refiners are designed for stable, efficient operation and are paired with technical guidance to help you implement these best practices. From analyzing your pulp furnish to recommending optimal plate technology and operating setpoints, we partner with you to maximize plate life and process consistency. Reduce your maintenance costs and achieve reliable refining performance. Reach out to our technical sales team today via leizhanworld@gmail.com to discuss a solution tailored to your mill.