Application of Reagent JZQ - F7 Prepared with Catering Waste Oil to the Low Grade Phosphate Rock Flotation

Mixed fatty acids collector (JZQ - F7) prepared with catering waste oil applying for recovery of low grade phosphate rock is studied. Research shows that the environmentally friendly collector JZQ - F7 has high selectivity for phosphate ore with good solubility in water. The reagent could upgrade the ore P2O5 content from 2.57% of the run-of-mine to 32.25% of that after a rough and two clean flotation processes with Na2CO3 dosage of 2.1 kg/t, Na2SiO3.9H2O dosage of 2.7 kg/t, JZQ - F7 dosage of 0.7 kg/t. The mesh of grind is 30% minus 200 mesh, and plus 40 mesh (0.45 mm) sizing product is discarded.