中文摘要：

通过浮选实验、Zeta电位测量和红外光谱分析研究了油酸钠捕收剂体系中锂辉石的浮选行为和作用机理。浮选结果发现,当油酸钠用量为200 mg/L,pH=8~9时,锂辉石最大浮选回收率为27%;当加入的活化离子Fe3＋浓度为35 mg/L时,浮选回收率高达90%,可见Fe3＋活化效果显著。Zeta电位测量结果显示锂辉石的零电点约为pH=3.0,加入阴离子捕收剂油酸钠后锂辉石Zeta电位整体向负移,则两者之间存在非静电作用力。在最佳浮选pH值=8~9时,锂辉石Zeta电位变化最显著,表明此时发生的吸附作用最大。结合红外光谱测试结果可得出结论：油酸钠在锂辉石表面吸附主要通过化学作用。

英文摘要：

Flotation behaviors and adsorption mechanism of spodumene by sodium oleate were studied by flotation,Zeta potential measurements and infrared spectra analysis.Flotation results show that when dosage of sodium oleate is 200 mg/L and pH=8-9,the maximum flotation recovery of spodumene is about 27%.The recovery of spodumene is up to 90%,as concentration of activated Fe3＋is 35 mg/L.And Fe3＋significantly activate spodumene flotation.The PZC of spodumene was observed at pH of about 3.0.Zeta potential of spodumene shifted towards the negative direction,indicating that the spodumene adsorbs sodium oleate mainly with non-electrostatic forces.The spodumene surface charged negatively adsorbs markedly anionic collector sodium oleate at pH=8-9,indicating the maximum adsorption by sodium oleate.Finally,It can be concluded that adsorption spodumene surface by sodium oleate is mainly by chemical interaction,based on infrared spectroscopy tests.