PLF series vertical impact fine crusher is a kind of latest developed, advanced, efficient fine grinding crusher, which has the advantages of hammer crusher, impact crusher and vertical shaft crusher,. Because of a special up dip circular-arc Impact plate, a reversible blow bar which is made from high abrasion-resistant material and the crushing chamber which composes two-phase crushing, the theories of striking, impacting, centrifugal impacting, shearing, and grinding etc of all kinds of crushers organically bond, making the energy and the space of crushing chamber fully utilized. The machine is reasonably structured, easily dismounted, highly efficient and the discharging is fine and even. Moreover, It has the features of few quick-wear parts, easy care and maintenance, low energy consumption, and larger production capacity etc. PLF series vertical impact fine crusher applies to crushing the materials whose compressive strength≤160Mpa, and especially applies to crushing the brittle materials in cement industry such as limestone etc, whose surface moisture≤5%. Meanwhile, it also can applies to fine crushing in building materials industry, chemical industry, mining and metallurgy industry. Brokening before grinding can highly reduce the feeding size of mill, playing a role of brokening instead of grinding.