Thickening

 

Disc Filter

Kadant has recently developed a family of disc filters, with a new design taking into consideration a reduction in maintenance cost, damage risks for the wires with subsequent fiber losses, and improvement of the filtrate water quality.

 

Working principle

Stock is sent between several discs with filtering surfaces which are maintained under vacuum. The water is filtered through the thick fiber mat which is created due to the vacuum. This results in very clear filtrate, and virtually no fiber losses.

 

Applications

  • Thickening of stock - typically from 0.5% to 12%
  • Save All Applications - fiber recovery from the excess water from the paper machine and water circuit closure

 

Benefits

  • Higher vacuum rate
  • Small disc volumes
  • Plastic free discs decreasing maintenance cost and damage risks
  • Optimized de-aeration of the pulp improving both the operation and the capacity of the disc filter

 

Alternative solutions for thickening include the Inclined Screw Press and the Screw Press.