PROCESS FOR RECOVERING THE STARCH PRESENT IN RECYCLED PAPER OR CARDBOARD， USE OF SAID STARCH

The present invention relates to a process for recovering starch present in paper and/or cardboard， by: [a] preparation of an aqueous suspension A of fibres， [b] treatment of the aqueous suspension A and formation of two fractions: - fraction B containing water， fibres， fines and fillers; - fraction C containing water and dissolved and/or colloidal starch， fines and fillers， [c] separation of fraction C into two fractions: - fraction D containing water and dissolved starch， - fraction E containing water and colloidal starch， fines and fillers， [d] use or treatment of fraction D， [e] use or exploitation of fraction E.