Method And Apparatus For Beneficiating Phosphate Ores Beker

1982-4-13method and apparatus for producing high grade phosphate rock from low grades, slime or tailings by subjecting the low grade rock, slime or tailings to a calcination treatment at a temperature within the range from 1000 fo 1600 fand preferably from 1400 fo 1600 funtil a fraction of said rock, slime or tailings becomes magnetically attractable, and subjecting the treated.

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