ZLDF-II single-effect fiber separator is mainly used for separating light and heavy impurities from waste paper pulp, and for secondary crushing of pulp from hydraulic pulper. This machine is equivalent to the combination of a sealed horizontal hydraulic pulper and a light and heavy impurity slag remover. It has compact structure and high efficiency. It integrates the functions of crushing, removing impurities and coarse sieve, greatly simplifies the waste paper treatment process and reduces energy consumption.