Andritz dIp update for Metsä tissue
Graz, Austria-based Andritz will modernize and upgrade the existing DIP line at the mill Metsä Tissue in Mänttä, Finland.
The line will supply the furnish for the mill’s three tissue machines and will process medium- to highquality recycled paper grades to be used as raw material for production of various tissue products.
Andritz will upgrade the pulping process with a new detrashing system – composed of a Fibre- Guard detrasher, a FibreWash drum, and a detrashing pump – to increase pulp quality by early removal of non-disintegrated reject materials.
In the three-stage coarse screening process, three new screens – type ModuScreen F and TC – with the latest slotted screen baskets and an AhlCleaner RB will ensure efficient removal of coarse contaminants at minimum fiber loss.
An Andritz SpeedWasher will separate inorganic material, such as filler and coating pigments, from the fiber suspension to enable low ash content at the end of the line. An Andritz pulp screw press further dewaters pulp that is suitable for subsequent dispersing.
In order to meet the high quality requirements of certain tissue products, Metsä Tissue chose an Andritz SelectaFlot flotation unit to improve brightness and remove ink particles at low fiber loss and energy consumption.
As well, basic engineering, dismantling of the existing equipment, erection, commissioning, start-up, and training will be supplied by Andritz to minimize the shut-down period.
The Mänttä mill has about 400 employees and produces toilet tissue, household towels, paper tissues, industrial tissue rolls and greaseproof paper for baking and cooking. It was the first mill in Finland to use recycled fibre in tissue paper.