Conveyor capacity refers to the maximum volume or mass of bulk material — expressed in tonnes per hour (t/h) or cubic metres per hour (m³/h) — that a conveyor belt system can transport under defined operating conditions. In mining operations handling bauxite, gold ore, iron ore, or diamond-bearing material, correctly calculating and designing for conveyor capacity is fundamental to ensuring that the processing plant receives sufficient feed to meet production targets without creating bottlenecks or overloading equipment. Conveyor capacity is determined by a combination of factors including belt width, belt speed, the troughing angle of the idler sets (which determines the cross-sectional area of the material load on the belt), the bulk density of the material being conveyed, the angle of inclination of the conveyor, and the surcharge angle of the material. As belt inclination increases, the effective carrying capacity decreases due to material sliding back. For iron ore operations with very high throughput requirements, wide belts (up to 2,400 mm) travelling at speeds of up to 6 m/s may be required to achieve capacities exceeding 10,000 t/h. In bauxite and gold operations, capacities are typically lower but must still be carefully matched to crusher and mill feed rates. Engineers use standardised calculation methods (such as those defined in CEMA or DIN standards) to verify conveyor capacity during design and operations.
