Abstract
The separation of dolomite impurities from phosphate ore is a challenging problem, which faces the phosphate industry with the depletion of siliceous ores. In this study, an amphoteric collector was used to remove the dolomite from phosphate ore as one trial in this field. The optimisation of this process using one factor at a time is a tedious process. Therefore, the factorial design was used for maximising dolomite separation efficiency. The design results were promising and indicated that the separation selectivity can be achieved. The produced concentrate has 0·53%MgO and ∼31%P2O5 with a recovery ∼90%.
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