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以十六胺、甲酸和乙醛为原料,合成了阳离子捕收剂N,N-二乙基-N-十六烷基胺(DEN16),通过单矿物和人工混合矿浮选实验以及红外光谱和Zeta电位测试,考察了其对一水硬铝石、高岭石和伊利石的浮选行为以及矿物与药剂的作用机理.浮选结果表明:在pH=5～5.5,DEN16用量为2×10-4mol/L时,高岭石、伊利石的回收率均高于82%,而一水硬铝石仅为60%;人工混合矿浮选精矿的铝硅比均高于20,说明在pH<8时,以DEN16为捕收剂可以实现铝硅酸盐与一水硬铝石的分离.红外光谱和Zeta电位研究结果表明,DEN16与3种矿物的作用皆为静电吸附,且与高岭石和伊利石的作用强于一水硬铝石.
Cationic collector N, N-diethyl-N-hexadecylamine (DEN16) was synthesized by using hexadecylamine, formic acid and acetaldehyde as raw materials. Through the flotation experiments of single mineral and artificial mixed ore and infrared spectroscopy And Zeta potential test were used to investigate the flotation behavior of diaspore, kaolinite and illite and the action mechanism of minerals and pharmaceuticals.The results of flotation showed that the dosage of DEN16 was 2 × 10 -4mol / L, the recoveries of kaolinite and illite are higher than 82%, while that of diaspore is only 60%. The aluminum-silicon ratio of artificial mixed ore flotation concentrate is higher than 20, The separation of aluminosilicate and diaspore can be achieved using DEN16 as the collector at pH <8. The results of IR and Zeta potential show that the interaction between DEN16 and the three minerals is electrostatic, Limestone and illite are stronger than diaspore.