含铝废液制备超细硅酸铝  

Preparation of ultra-fine aluminum silicate from aluminum bearing waste

作　　者：李洪花[1] 李辽沙[1] 

机构地区：[1]安徽工业大学安徽省冶金工程与资源综合利用重点实验室,安徽马鞍山243002

出　　处：《化工学报》2007年第2期514-517,共4页CIESC Journal

基　　金：国家自然科学基金项目(50574033);安徽省自然科学基金项目(050450105)。~~

摘　　要：Ultra-fine aluminum silicate is synthesized from aluminum sulfate and sodium silicate generally.It consumes aluminum containing chemicals with a high cost.Therefore, a new method that used aluminum bearing waste liquid as raw material was developed. The new method consisted of reaction, polymerization, surface modification, aging,and washing.Besides, the properties of the product were studied with compositional analysis, infrared spectroscopy, SEM, XRD.The results showed that the diameter of primary particles of the product was about 10～40 nm, and the mean diameter was 100nm for the secondary particles.A kind of 3-D network with Si—O and Al—O bonds built up its amorphous non-crystalline structure.The product was up to the current enterprise standard of China.Its chemical formula was Na2O · Al2O 3 ·mSiO 2 ·nH2O（m=9—11, n=4—6）.Ultra-fine aluminum silicate is synthesized from aluminum sulfate and sodium silicate generally. It consumes aluminum containing chemicals with a high cost. Therefore, a new method that used aluminum bearing waste liquid as raw material was developed. The new method consisted of reaction, polymerization, surface modification, aging, and washing. Besides, the properties of the product were studied with compositional analysis, infrared spectroscopy, SEM, XRD. The results showed that the diameter of primary particles of the product was about 10-40 nm, and the mean diameter was 100nm for the secondary particles. A kind of 3-D network with Si--O and Al--O bonds built up its amorphous noncrystalline structure. The product was up to the current enterprise standard of China. Its chemical formulawas Na2O·Al2O3· mSiO2 · nH2O （m=9-11, n=4-6）.

关 键 词：含铝废液 超细硅酸铝 制备 冶金渣 

分 类 号：TQ133.1[化学工程—无机化工]