高铝粉煤灰硫酸法提铝的形貌研究和组成分析  

STUDY ON THE SURFACE MICROPOGRAPHY AND CHEMICAL COMPOSITION CHANGE IN EXTRACTING ALUMINUM FROM HIGH-ALUMINUM FLY ASH

作　　者：白光辉[1] 沈博[1] 秦晋国 王香港[1] 滕玮[1] 

机构地区：[1]西安建筑科技大学理学院,西安710055 [2]平朔煤炭工业公司高级工程师,山西朔州035000

出　　处：《煤炭转化》2008年第1期71-74,共4页Coal Conversion

基　　金：朔州市政府“企业科研基金资助项目”.

摘　　要：采用扫描电子显微镜(SEM)、X射线衍射仪(XRD)和X荧光光谱(XRF)等研究了粉煤灰在硫酸法提铝工艺过程中的微观形貌和组成变化.结果表明,粉煤灰在经历活化-反应-浸出后,其微观形貌发生了巨大改变,并且产物硫酸铝的提取率达到85%.验证了粉煤灰进行硫酸法提铝过程的可行性,并为其进一步研究和工艺化提供了理论依据.The variations of surface micropography and chemical composition of fly ash in extracting aluminum from it was investigated with scanning electron microscope,X-ray diffraction and X-ray fluorescence analysis. The experimental results indicated that the microtopography has experienced magnificent change after the process of activation-reaction-dissolution with the extraction rate of aluminum at 85%0. The study contributed to not only proving the feasibility of the method, but also providing theoretical basis for further reseach.

关 键 词：粉煤灰 酸法工艺 硫酸铝 

分 类 号：TQ536.4[化学工程—煤化学工程]