After research on the fractionation of softwood BC TMP pulp fiber by a cylindrical hydrocyclones, a new knowledge of the relationship between split ratio and flow field in hydrocyclones was gained.

• 通过用柱形水力旋流器对漂白化学热磨机械浆进行筛分的实验,获得了分流与流场相互关系的新认识。