ball mill screening processes in iran

Recovery Of Tin And Copper By Recycling Of. A ball mill (pavitest mill, model i-4227, brazil).the powder produced after 8 minutes of milling was 1.6 kg of material finer than a 0.208mm particle size.milling exploratory tests with the pcb material and the ball mill showed that 90% of the material was finer than 0.208mm particle size, even for milling times higher than 8 minutes.