(中南大学 资源加工与生物工程学院， 长沙 410083)
摘 要: 通过浮选实验和红外光谱测定，考查了铁闪锌矿在无捕收剂或以乙黄药为捕收剂时的浮选行为。 结果表明： 铁闪锌矿在酸性条件下， 可实现无捕收剂浮选， 硫酸铜的活化效果不明显； 在乙黄药体系下，铁闪锌矿只能在酸性条件下可浮， 表面生成产物主要为乙黄原酸锌； 但有硫酸铜存在时， 铁闪锌矿可浮性得到大大改善， 当硫酸铜用量达到一定程度， 在整个pH值范围内铁闪锌矿均有较好的可浮性， 铁闪锌矿表面生成物为CuEX。
关键字: 铁闪锌矿； 浮选； 表面吸附
（ School of Resources Processing & Bi-engineering,
Central South University, Changsha 410083, China）
Abstract: The collector and collectorless flotation of marmatite was investigated by flotation tests and FTIR. The results show that in acid solution, marmatite can be achieved collectorless flotation response. Cu2+ ion can not affect the collectorless flotability of marmatite. In ethyl xanthate solution, marmatite can be flotated only in acid solution. When marmatite was activated by Cu2+ ion, the floatability would be improved extensively in a pH range from 2 to 12. FTIR spectrocopy analysis shows that the surface adsorption product is CuEX.
Key words: marmatite; flotation; surface adsorption
