By using ECF bleaching ,all of three kinds of pulp,aspen pulp,eucalyptus pulp and the mixed aspen and eucalyptus(40/60) wood pulp could be bleached to a brightness of 89.0%.

• 采用OD0 (EO)D1 漂序的ECF漂白 ,三种硫酸盐纸浆均可被漂白到 89 0%25 (ISO)左右的白度 ,但桉木浆相对难漂一些 ;