摘要
采用酸浸法处理高硅铁尾矿,制备工业原料Fe2O3和SiO2微粉。最佳工艺条件为:反应温度100℃,反应时间90min,铁尾矿中位粒径6.19μm,盐酸体积分数60%。在上述最佳条件下,制备的SiO2产率(所得产品中S iO2的质量占原铁尾矿中SiO2质量的比例,下同)达98.2%,品质达到YB/T115—2004《不定形耐火材料用二氧化硅微粉》中SF96牌号的要求;制备的Fe2O3产率为78.8%,品质符合GB1863—89《氧化铁红颜料》的要求。
High silicon iron tailings were treated by acid leaching process to prepare Fe2O3 and SiO2 powders, which can be used as industrial materials. The optimum process conditions are as follows: reaction temperature 100℃, reaction time 90 min, median diameter of iron tailings 6.19 μm, volume fraction of hydrochloric acid 60%. Under these conditions, the yield of SiO2 product ( the mass ratio of SiO2 in the product to that in the iron tailings) is 98.2%, and its quality can meet the standard of YB/T 115 -2004 for sign SF96; the yield of Fe2O3 product is 78.8%, and its quality can meet the standard of GB1863 - 89.
出处
《化工环保》
CAS
CSCD
北大核心
2011年第3期248-251,共4页
Environmental Protection of Chemical Industry
基金
江苏省高校自然科学重大基础研究项目(08KJA43009)
江苏省生态环境材料重点建设实验室资助项目(XKY2010010)
关键词
高硅铁尾矿
分离
二氧化硅
氧化铁
综合利用
high silicon iron tailings
separation
silica
iron oxide
comprehensive utilization