optimum ball charge to maximize impact breakage is 35% to 45% of critical speed. mill throughput capacity. for wet ball mills, bond expressed power d as a function of the total mass of media: 2019 mining mill operator training
the wet ball mill has two types as follow: grid type and overflow type.the grain size limit of the grinding mill is usually 0.2 0.3mm, so it is commonly used in the first segment. the particle size of the grinding mill is generally less than 0.2mm, so it is suitable for the second grinding of the middle product in the two-stage grinding process.
modeling ball impact on the wet mill liners and its application in predicting mill magnetic liner performance. author links open overlay panel mike shi ping ball mills and sag mills in the mining industry normally operate at 70 80% of the critical speed. such percentage of the critical speed is called specific speed.
according to the need of customers, ball mill can be either wet or dry designs. these mills are sized from 2 t/h to 30 tph for wet grinding and from 0.5 t/h to 30 tph for dry grinding. ball mills have been designed in standard sizes of the final products between 0.074 mm and 0.4 mm in diameter.
for both wet and dry ball mills, the ball mill is charged to approximately 33% with balls range 30-45% . pulp crushed ore and water fills another 15% of the drums volume so that the total
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