复杂高硫金矿石浮选试验研究

来源期刊：黄金2010年第6期

论文作者：何桂春

文章页码：45 - 49

关键词：金矿石； 硫化矿物； 微细粒； 浮选； 锌

Key words：gold ore； sulfide mineral； micro-sized particles； flotation； zinc

摘    要：某高硫微细粒金矿石成分复杂,金与硫化矿物以及硫化矿物之间共生关系密切,分选难度大。试验采用工艺方法:亚硫酸钠-硫酸锌复合抑制剂抑制闪锌矿等硫化矿物,优先浮金;浮金尾矿用亚硫酸钠抑制黄铁矿,硫酸铜活化闪锌矿浮锌。试验结果表明,金精矿金品位达65.38%,回收率56.31%;锌精矿锌品位43.73%,回收率78.54%,取得了较好的技术指标。

Abstract: The component of a high-grade-sulfide micro-sized gold ore is complex.And the associated relationship between gold and sulfide is very close,as a result,it is difficult to separate gold from sulfide ores.The flotation flow sheet is gold selective flotation and subsequent sphalerite separation from gold-flotation tailing.Na₂SO₃ and ZnSO₄ are mixed depressants for sphalerite and other sulfides in gold selective flotation.In the sphalerite floatation,Na₂SO₃ is the depressant for phyrite and CuSO₄ is the activator for sphalerite.The experimental results show that the process can reach good technical indices: gold concentrate with gold of 65.38 g/t and gold recovery of 56.31 % ,zinc concentrate with Zn of 43.7 % and Zn recovery of 78.54 % .