Circulose Ab

Re:newcell Ab

Amy Tran Carlström

Gunnar Henriksson

Mikael Lindström

Michael Ternström

Zaheer Ahmad Mansoor

Lennart Börjeson

Tobias Sjögren

Lennart Källén

Kajsa Fougner

Tahani Kaldéus

There is provided a method for separation of fibers in for instance recycled textile, starting with a mixture comprising cellulose fibers and non-cellulose fibers and then reducing the cellulose chain length of the cellulose fibers so that the limiting viscosity number determined according to ISO 5351 is in the interval 200-900 ml/g, mechanically breaking agglomerates of fibers into smaller pieces, adjusting the concentration of fibers to 0.1-4 wt %, and subjecting the mixture to flotation to remove the non-cellulose fibers. Non-cellulosic fibers such as synthetic fibers can be removed very specifically without or essentially without removing cellulose fibers in the mixture. This gives a very high degree of removal and simultaneously the yield is kept high because no or only few cellulose fibers are removed.

Separation of fibers

Growing community of inventors

Kristinehamn, Sweden

Amy Tran Carlström