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80oC、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.
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 80oC, reaction time 3 h, vitriol concentration 2.70 mol/L, oxalic acid concentration 0.25 mol/L, liquid solid ratio 1:6 are suggested.
出处
《过程工程学报》
EI
CAS
CSCD
北大核心
2004年第1期12-15,共4页
The Chinese Journal of Process Engineering
基金
国家重点基础研究发展规划资助项目(编号: G1999064901)
