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›› 2004, Vol. 4 ›› Issue (1): 12-15.

• 反应与分离 • 上一篇    下一篇

铝土矿浮选尾矿中铁的溶解行为

袁明亮,赵国魂,胡跃华   

  1. 中南大学矿物工程系
  • 出版日期:2004-02-20 发布日期:2004-02-20

Acidic Dissolution Behavior of Iron in the Floated Tails of Complicated Bauxite

YUAN Ming-liang,ZHAO Guo-hun,HU Yue-hua   

  1. Col. Res. Proc. & Bioeng., South China Univ.,
  • Online:2004-02-20 Published:2004-02-20

摘要: 研究了复杂铝土矿浮选尾矿在酸介质中铁的溶解行为. 结果表明,在一定的温度下,铝土矿中的赤褐铁矿能较好地溶于硫酸溶液中,而铝土矿中矿物等的性质不发生变化,这为铝土矿尾矿的进一步加工利用提供了条件. 实验详细讨论了反应温度、反应时间、硫酸浓度等因素对铁溶解行为的影响,得出在反应温度80℃、反应时间3 h、硫酸浓度2.70 mol/L、草酸浓度0.25 mol/L、液固比1:6时除铁率可达90%左右.

关键词: 铝土矿, 草酸, 铁矿, 硫酸, 溶解

Abstract: The dissolving behavior of iron in bauxite tails in vitriol solution was studied. The results show that the Fe2O3 in tails can dissolve in vitriol solution rapidly, and the property of aluminum bronze in bauxite is not changed, which offers good conditions to processing and utilization of bauxite tails. The effects of reaction temperature, oxalic acid and vitriol concentration on the dissolving rate of iron were discussed in detail and the best conditions of reaction temperature 80℃, reaction time 3 h, vitriol concentration 2.70 mol/L, oxalic acid concentration 0.25 mol/L, liquid solid ratio 1:6 are suggested.

Key words: bauxite, oxalic acid, iron, vitriol, dissolution