Customer case:

Metsä Fibre's Kemi bioproduct mill

May 4, 2021

Metsä Fibre, which is part of Metsä Group, is building a new bioproduct mill in Kemi, Finland. The new bioproduct mill will have an annual pulp production capacity of 1.5 million tonnes and in addition produce various other bioproducts. The new totally fossil fuel free mill is scheduled to start-up in the third quarter 2023.

Metsä Kemi bioproduct mill Jari-Pekka Johansson
We want the best professionals in their field to partner with us to build a modern bioproduct mill in Kemi. We expect our partners to commit to the goals of the project in terms of safety, schedule and quality.”
Jari-Pekka Johansson, Project Director, Metsä Fibre


Location Kemi, Finland
Customer challenge Growing demand for softwood pulp
Replacing an old pulp mill

New pulp mill with all main process technology and automation from Valmet: 


  • Valmet Gentle Feed – log infeed system with de-icing
  • Debarking Drum with hydrostatical  support
  • Bark- and water handling system
  • Disc Chippers
  • Circular Chip Storages

Cooking and fiberline

  • Flexible two vessel cooking system with Valmet ImpBin and Continuous Cooking technology
  • Possibility to produce both softwood and hardwood pulp
  • Valmet TwinRoll technology
  • Optimized usage of secondary condensate

Pulp drying and baling line

  • Automatic tail threading
  • Automatic fold-up doors
  • High speed baling lines
  • Advanced bale weight control


  • Valmet Tubel technology
  • Valmet low energy solution - steam optimization with cooking
  • Optimized condensate production for 100% re-use at mill

Recovery boiler

  • High power recovery boiler
  • Highest possible efficiency and availability
  • Meets the strictest environmental standards
  • Tailored ESPs for very low dust emissions

Ash treatment 

  • Ash Crystallizer technology


  • High white liquor filtration with low PPM and high lime mud dryness

Fossil fuel free lime kiln

  • Burner system designed for 100% fossil fuel-free operation with low NOx
  • ESP
  • Bark dryer utilizing Valmet Belt Dryer technology
  • Gasification plant utilizing Valmet CFB gasification technology

Sulfuric acid plant

  • Integrated sulfuric acid production from mill NCG

Mill wide NCG solution

  • collection and treatment of mill’s odorous gases

Mill wide automation system

  • Valmet DNA  distributed control system
  • Plant information management system
  • Advanced process controls
  • Analyzers and online measurements
  • Dedicated systems for pulp dryers
  • Dedicated systems for ESPs
  • Simulators and optimizers for selected process islands
  • Valmet Performance Center connectivity

The mill is optimized for:

  • High environmental and operational safety
  • High energy efficiency
  • Low water consumption and low emissions
Keywords Chemical pulping, Complete pulp mills, Automation, Europe, Finland