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Thickening

Valmet OptiDewater – better filtration ensures lower fresh water consumption and reduced chemical consumption

Valmet’s OptiDewater thickeners are designed for all pulp types and for every stock preparation application. OptiDewater thickener ensures increased stock consistency and minimizes storage volumes.

OptiDewater Gravity - for efficient broke and pulp thickening

Valmet’s OptiDewater gravity thickeners guarantee highly efficient broke and pulp thickening, delivering high-capacity dewatering in a compact and cost-efficient process for a wide range of paper and board grades. The pulp is fed into one end of the rotating drum, and gravity causes the thickened pulp to drop from the wire to be discharged at the opposite end. The filtrate flows through the wire of the rotating drum, providing a large filtration area. Water sprayed from outside the drum keeps the wire clean.

Key benefits
  • High capacity filtration area
  • Clean filtrate
  • Wide feed consistency range
  • Savings in installation and rebuild costs through compact design in relation to production volume and possibility to install in low building space
  • Easy to operate and maintain: no couch roll or doctor blades, drum damage is avoided because the pulp is not pressed against the wire