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OptiFiner Conflo refiner

OptiFiner Conflo refiner's conical single gap design, featuring a wide range of filling patterns and accurate refiner gap control, enables papermakers to reach targeted paper quality.

Accurate refiner gap control

For the best refining result the most important requirement is to maintain precise control of the gap clearance combined with fillings tailored correctly to the stock. OptiFiner Conflo refiner features a cantilevered design with fixed stator and uniformly moving rotor, stable gap clearance is maintained by precise control technology. The flow pattern between the fillings ensures high fiber coverage across the bars due to applied centrifugal force.

Combined with the long refining zone, this provides a longer retention time for fibers between the fillings and optimizes fiber development. Stable operation and uniform refining results are ensured by the OptiFiner refiner design. Standard fillings of different coarseness meet the requirement for most typical short- and long-fiber refining applications, including recycled-fiber treatment.

The OptiFiner Conflo design, featuring a wide range of filling patterns, enables papermakers to optimize the virgin or recycled fiber pulp properties to meet the desired final paper properties.

  • Improved fiber bonding increases paper machine runnability, improves printability and decreases web breaks
  • Reduced total energy consumption, optimized furnish composition and easy maintenance result in lower operating costs
  • OptiFiner Conflo is proven technology with precise gap control. We provide fillings for all requirements and upgrades for existing refiners.

Solutions for peak performance refining

Valmet's refiner segments are known tools to improve production efficiency and precisely control pulp quality.

  • MicroBar for increased loadability and energy-efficiency
  • MaxiFlo for increased hydraulic capacity
  • AttackBar for higher refining performance

Turbine Housing boosts refiner production With Turbine Housing you can:

  • save energy by eliminating one refiner, lowering rotation speed of lowering feed pump speed
  • gain 20-40% more production from your existing refiners
  • refiner more gently with a denser fillings pattern
  • extend the service life of the fillings by up to 25%

Refining rebuild at Savon Sellu

Refining rebuild at Savon Sellu

“We believe that the unique refining principle of the OptiFiner Pro gives us an advantage. As a bonus, we use 30% less energy while achieving the same freeness values as before", tells Tapio Laukkanen about the results of a refining rebuild at Savon Sellu.