摘要
研究了高温高压条件下铝土矿中铁在硫酸介质中的溶解行为,结果表明:在一定的温度条件下,铝土矿的赤褐铁矿能较好地溶于硫酸溶液中,而铝土矿中含铝矿物的性质不发生变化,从而为铝土矿的进一步加工利用提供了条件。详细讨论了反应温度、反应时间、硫酸浓度、液固比等因素对铁的溶解行为的影响,得出了在最佳工艺条件,即在反应温度160℃、反应时间3h、硫酸浓度0.7mol/L和液固比6∶1时除铁效率最高。
The dissolving behavior of iron in bauxite under high temperature and high pressure in vitriol solution was studied. The results show that the Fe2O3 in bauxite can be dissolved in vitriol solution rapidly, and meanwhile the technology would not change the property of aluminum bearer in bauxite, which offers good conditions to the processing and utilization of bauxite. The effects of reaction temperature, reaction time and vitriol concentration on the dissolving rate of iron were discussed in detail. The optimum conditions are: reaction temperature 160 ℃, time 3 h, vitriol concentration 0.78 mol·L-1, liquid solid ratio 6∶1.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2003年第2期480-484,共5页
The Chinese Journal of Nonferrous Metals
基金
国家重点基础研究发展规划资助项目(G1999064901)
