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Ist Ball Mill Rock Phosphate

Phosphate Rockan overviewScienceDirect Topics Phosphate rock of 70 to 75 BPL or as high as is reasonably obtainable is finely ground in a ball mill and then mixed with cooled recycled phosphoric acidgypsum slurry in a digestion tank Figs 10 3 and 10 4 At this stage the only reaction which occurs is between acid and any carbonates present in the rock and between phosphates and low