More CTMP at Ortviken
- News
“The biggest challenge, apart from the fact that we had a global pandemic to deal with during the project, affecting not only us but also our contractors and naturally logistics, was to tear down large parts of the closed paper mill at Ortviken and build a new CTMP facility at the same time”, says Anders Granström, Mill Manager at the new facility. However, “everything is proceeding according to plan, and we are now working on qualifying existing products at Ortviken, meaning that Östrand will shut down late spring”.
Production will triple from today’s 100,000 tons
“Significant focus has been on creating capabilities for an impressively broad product portfolio. This incorporates the ability to use different fibre raw materials and for developing the pulp properties over several refining stages”, continues Anders.
“The wood handling department from the old mill is fully repurposed, but in order to efficiently handle different types of wood the number of chip silos has increased from one to three. Within the pulp mill, the primary and secondary refiner and screening are reused, but now supplemented with a chip bin, impregnation, and preheater, as well as three low consistency refiners. Steam separation after primary refining is made using a perivapor. The disc filter has been rebuilt to handle the pulp's dewatering for the different qualities", explains Anders.
To produce birch CTMP, a new cleaning stage has been installed, cleaning birch pulp from black spots as well as the separation of stone cells. And the bleach plant has been rebuilt to facilitate two-stage bleaching.
A new building has been erected which houses dewatering, two twin roll presses, two flash dryers and baling, as well as a wrapping facility. The facility is designed for a capacity of 300,000 tons a year, in addition, we supply district heating, that is enough for 10,000 households," says Anders.
"New technical capabilities, access to different types of wood and our both broad and deep competence mean that we can now develop solutions for several different needs and customer groups. We offer both a wider freeness range and a low shive. In addition, high brightness thanks to the two-stage bleaching system. Add to that our proprietary HT technology, which provides unique bulk for both spruce and birch," says Sara Qvist, product specialist for CTMP.
“Furthermore, we deliver significant volumes for food packaging, meaning high product safety requirements on our pulp. The extended washing stages at Ortviken provide the conditions for a very clean pulp that also reduces odor and taste components. And naturally greater opportunities to develop new food-approved products in this segment. All these process engineering possibilities combined, makes our new offering SCA More relevant to a much wider market, which - needless to say, is great," concludes Sara.
World-class quality
Ortviken's facility is unique from a quality online measurement perspective, with several measuring points: CSF, freeness, shives, mean fibre length, spots and strength. In addition is ph measured. Brightness is measured in four positions. The goal is to do online grading of all bulk products, something that is not done at many mills.
Safety is also increased; double valves are used to ensure that it is possible to empty efficiently and safely during maintenance work. And the bale line is fully secured with automatic light booms if someone gets too close.
The new CTMP portfolio – SCA More
"Unique access to certified forests with a variety of versatile wood material and our new mill enables us to launch SCA More. The world´s broadest product portfolio, comprising of six main grades and unseen opportunities to tailor solutions”, says Stefan Sjöström, Director of Global Sales, CTMP.
"Thanks to our long and solid experience, we are also developing new products, and with our new state-of-the-art facility, plus the R&D resources we have, we are certainly well equipped to develop completely new solutions. Above all, and what has been so much appreciated and successful so far, is that we can continue to develop these solutions together with our customers”, continues Stefan. It´s more of everything, that´s why we named it SCA More!