#### Investigation on Iron Ore **Grinding based on Particle Size** …

2020-5-28 · where F 80 is 80% feed **particle size** passing (μm), P 80 is 80% product **particle size** passing (μm), P i is the **size** of the mesh selected for the test, and Gpb is the grindability of the undersized product produced per mill revolution (g/rev).. After **grinding** the iron ore samples X, Y, and Z in the BBM, it was recorded that P 80, BWI, and RT varied for each iron ore sample as …