An ore having 80% passing 10 mm is fed to a mill with a capacity of 12 t/h. The ground product has 80% passing o,9 mm. It is required to grind 80% of the ore to a size of below 0,4 mm and to keep the...

Extracted text: An ore having 80% passing 10 mm is fed to a mill with a capacity of 12 t/h. The ground product has 80% passing o,9 mm. It is required to grind 80% of the ore to a size of below 0,4 mm and to keep the same amount of energy required. Calculate the amount of ore that can be fed to the mill per hour to achieve this requirement