Jan 17, 2016 · CAPACITY OF BELT CONVEYOR It mainly depends upon Area of cross section of coal load on belt Speed of belt Based on uniform feed to the conveyor, local cross section area (A0) is A0 = 𝑘𝐵 𝐵 − + 𝐵2tan 𝛼 where, B Belt width, 𝛼 Surcharge angle k It's a constant varies with trough angle .