## Screening 101 - Mineral Processing & Metallurgy

While discussing formulae, it may be of interest to note a simple computation for screen efficiency. This formula is: Percent Efficiency=100 (100 F-D/AF) A=Percent finer than required size in the screen feed. D=Percent coarser than required size in the screen feed. F =Percent coarser than required size in the screen oversize.