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投稿时间：2013-11-06 修订日期：2013-11-12 录用日期：2013-11-12 网络发布日期：2014-04-22
投稿时间：2013-11-06 修订日期：2013-11-12 录用日期：2013-11-12 网络发布日期：2014-04-22
中文摘要: 研究了高铝粉煤灰预脱硅同步降低碱含量的规律及控制机理。结果表明，在温度90 ℃、氧化钠浓度120 g/L、反应时间2.5 h、液固比3∶1的最佳条件下，脱硅灰中化学碱氧化钠含量为2.8%，铝硅比由1.30提高到2.12，氧化硅溶出率39.4%，氧化铝溶出率0.6%，实现了高铝粉煤灰预脱硅后碱含量最低且预脱硅效率最大化。
Abstract:The regulation rules and controlling mechanism of synchronous reduction of alkali content in high alumina fly ash by pre-desilication were studied. The results show that sodium oxide content of high aluminum fly ash after desilication is 2.8%, alumina-silica ratio rises from 1.3 to 2.12, silicon oxide leaching rate is 39.4%, and alumina leaching rate is 0.6% under the optimum conditions including temperature of 90 ℃, Na2O concentration of 120 g/L, reaction time of 2.5 h, and ratio of liquid to solid of 3∶1. After desilication pretreatment, the lowest alkali content in high alumina fly ash and maximum desilication efficiency are achieved.
文章编号： 中图分类号：TF821 文献标志码：
基金项目:国家“十一五”科技支撑计划项目（2009BAB49B00）
引用文本：
公彦兵,孙俊民,张 生,张战军,杨会宾,王 勇,王 娜.高铝粉煤灰预脱硅同步降低碱含量[J].有色金属（冶炼部分）,2014(5):21-25.
GONG Yan-bing,SUN Jun-min,ZHANG Sheng,ZHANG Zhan-jun,Yang Hui-bin,WANG Yong,WANG Na.Synchronous Reduction of Alkali Content in High Alumina Fly Ash by Pre-desilication[J].Nonferrous Metals (Extractive Metallurgy),2014(5):21-25.
公彦兵,孙俊民,张 生,张战军,杨会宾,王 勇,王 娜.高铝粉煤灰预脱硅同步降低碱含量[J].有色金属（冶炼部分）,2014(5):21-25.
GONG Yan-bing,SUN Jun-min,ZHANG Sheng,ZHANG Zhan-jun,Yang Hui-bin,WANG Yong,WANG Na.Synchronous Reduction of Alkali Content in High Alumina Fly Ash by Pre-desilication[J].Nonferrous Metals (Extractive Metallurgy),2014(5):21-25.
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