Freeness Measurement – parameter for pulp dewatering

1. Controlled freeness, generate energy savings

2. Important for refining control and saving energy

3. Standard lab method for freeness optimization

Freeness – a parameter that influence energy on refiner and can generate savings

Pulp Draining measurement

Paper and pulp industry the freeness as a standard measure to represent pulp properties. The freeness is the total volume of water discharged from a side orifice of a specific configuration while the pulp suspension drains freely under gravity.

Standard method is to use a screen for dewatering pulp based on gravity force. This parameter is influenced by the paper machine’s fourdrinier former by pulp refiners prior to the paper machine. That we call wet-end part of the process.

How to do freeness measurement

  • Lab method
  • Online freeness measurement

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