Drum sorter

Details Drum sorter Drum sorter

D - Textiles, Paper

21

C

D21C 5/02 (2006.01) D21B 1/02 (2006.01) D21B 1/32 (2006.01)

Patent

CA 2056051

Abstract The invention concerns a process for the treatment of wastepaper, carried out for the most part at a high consistency of at least 8% in the first stages, beginning the dissolution (soaking) and including a coarse sorting stage. The invention is characterized in that in the case of wastepaper containing a share of at least 40% of de-inking wastepaper provided with printing inks, the three first process stages - namely in this order of soaking, coarse cleaning and the further extensive dissolution of the wastepaper - take place at a considerable reduction of the wastepaper shreds to the usual speck size at a consistency of at least 13%, and the soaking under considerable addition of dissolving chemicals, and that the wastepaper including essentially all heavy contaminations, such as part of wood, glass, plastic or metal contained in the wastepaper, including pieces of metal straps of the wastepaper bales, is fed to the process.

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