deck angle which can be described as (15) η 1 = m S 1 m S 2 × 100 % three and four layers and the screening effect of 2-layer screen is the best. Our screen has higher screening efficiency and productivity because of the strong vibration of the screen box reduce the material blocking the screen holes. Meanwhile our vibrating screen is with simply structure and it ... · 3.2. Screening efficiency used in the simulation. It is know that the mass ratio was used to represent the screening efficiency in the industry
