Energy-quality relations within refiner plate-gap

Sari Liukkonen, Antti Fredrikson, Lauri Salminen, Jari Sirviö

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific


Pulp quality development as a function of specific energy consumption across the plate gap of a first stage TMP-refiner (Metso RGP 44) was shown for two bi-directional rotor plate designs. New information was released on how the chips are defibrated and fibers fibrillated at different rims of the refining plate. The analysis revealed the areas of the refining surface that work efficiently and the areas that just consume energy without fiber development. The tangential shear force and temperature measurement system together with in situ plate gap pulp sampling gave valuable physical information on the relations between energy efficient wood defibration and refiner plate configurations.
Original languageEnglish
Title of host publicationProceedings of International Mechanical Pulping Conference 2011
PublisherChinese Academy of Forestry
ISBN (Print)978-7-5019-8251-6
Publication statusPublished - 2011
MoE publication typeB3 Non-refereed article in conference proceedings
EventInternational Mechanical Pulping Conference, IMPC 2011 - Xi'an, China
Duration: 26 Jun 201129 Jun 2011


ConferenceInternational Mechanical Pulping Conference, IMPC 2011
Abbreviated titleIMPC 2011


  • Thermomechanical pulping
  • sampling
  • refiner disc
  • efficiency
  • energy consumption
  • pulp properties

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