Abstract
In the process of recycling phosphate ore processing wastewater, the accumulation of inorganic ions and the flotation reagents have a great influence on the flotation performance when they reach to a certain concentration. This paper studied the effect of Ca2+, Mg2+, SO42- and PO43- on the reverse flotation of phosphate ore through the single factor experiment. The experimental results show that Ca2+, Mg2+ and PO43- have less effect on the flotation performance, and that a certain amount of PO43- in the ore pulp can reduce the dosage of acid and improve the flotation result. SO42- has a significant effect on the reverse flotation of phosphate ore and the concentration of SO42- should be controlled under 1 g/L in the backwater utilization.
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