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对碳酸盐脉石胶磷矿浮选捕收剂深度氧化脂肪酸MG-2的浮选性能与作用机理和NaOL进行了对比。纯矿物试验表明,MG-2的耐低温性更好,捕收力更强。实际矿物浮选中,MG-2表现出良好的选择性。单一正浮选闭路试验指标为:精矿的P2O5含量29.36%,尾矿P2O5含量为4.70%,P2O5总回收率达到了88.49%,取得了较好指标。通过吸附量测试、CMC值测试和红外光谱测试,研究了温度和药剂浓度对MG-2在矿物表面吸附的影响。结果表明,MG-2在胶磷矿表面主要为牢固的化学吸附。
The flotation performance, mechanism of action and NaOL of deep oxidation of fatty acid MG-2 with carbonate gangue phosphate rock phosphate flotation collector were compared. Pure mineral tests show that MG-2 has better low temperature resistance and better harvesting power. In actual mineral flotation, MG-2 shows good selectivity. Single positive flotation closed-circuit test indicators: concentrate P2O5 content of 29.36%, tailings P2O5 content of 4.70%, P2O5 total recovery rate reached 88.49%, and achieved good indicators. The effects of temperature and drug concentration on the adsorption of MG-2 on the mineral surface were investigated by adsorption amount test, CMC value test and infrared spectroscopy. The results showed that MG-2 was mainly strongly chemisorbed on the surface of colloidal phosphate rock.