含硫体系中SO₃^2-对S₂O₃^2-浓度的影响

来源期刊：有色金属2010年第3期

论文作者：党晓娥 兰新哲 张秋利

文章页码：85 - 87

关键词：冶金技术； 含硫浸金体系； SO₃^2-； S₂O₃^2-； 阻碍； 稳定

Key words：metallurgical technology； bearing sulfur system； SO₃^2-； S₂O₃^2-； hinder； stabilizer

摘    要：分析不同条件下模拟含硫体系反应过程中S₂O₃^2-与SO₃^2-的浓度变化。结果表明,在未通空气时,SO₃^2-的加入阻碍了S₂O₃^2-与Cu(NH₃)₄^2-发生氧化还原反应,通空气中时,SO₃^2-加入有利于体系中S₂O₃²-的浓度保持稳定。不加入SO₃^2-时,S₂O₃^2-的氧化速度加剧,且有单质S0生成,降低主成分S₂O₃^2-的浸金效应。因此在碱性含硫浸金体系中,SO₃^2-具有保持主成分S₂O₃^2-浓度稳定的作用。

Abstract: The concentration variation of S₂O₃^2- and SO₃^2- are analyzed during the reaction of simulation sulfur system under different conditions.The results show that the oxidation reaction between S₂O₃^2- and Cu(NH₃)₄^2- without air is hindered by addition of SO₃^2-.The addition of SO₃^2- is beneficial to remain S₂O₃^2- concentration stabilization in system under air.While there is no addition of SO₃^2-,the oxidation rate of S₂O₃^2- is increased,its concentration is decreased and S0 is generated,so the gold leaching result is not ideal.It is indicated that the SO₃^2- plays a role to stabilize the concentration of S₂O₃^2-,main component,in alkaline containing sulfur system.