Ring crusher collides with materials through the hammer body rotating at high speed, which has the characteristics of simple structure, high crushing ratio and high production efficiency. It can be crushed in dry and wet forms. Ring hammer crusher is suitable for crushing medium hardness and brittle materials in mines, cement, coal, metallurgy, building materials, highways, combustion and other departments. The ring crusher can adjust the gap of grate bars and change the discharging granularity according to the requirements of users to meet the different needs of different users.