Method for producing pulp from printed unselected waste paper

摘要: A waste paper recycling process relates to the treatment of a mixture containing non-cellulosic contraries and printing inks, in order release from fibers further separate them stock produce re-usable pulp for production board. The invention has do with new useful improvements methods first removing non-ink fibrous mass second releasing then ink particles said mass. is directed fiber slurry produced during separation stage, after stage been applied. One aim allow both use mineral fillers contained that slurry, board making, solids-free water same as washing liquid previous ink-separation treatment, thus closing circuits. This includes chemical thermo-mechanical treatments, starting under alkaline conditions, which may become neutral at end process.