中文摘要：

引言 超细硅酸铝作为新型化工助剂，已广泛应用于涂料、油墨、塑料、橡胶、皮革、印染、造纸等领域。目前，国内外多采用硫酸铝和水玻璃直接合成的制备工艺，成本较高。本文旨在探索以工业含铝盐废液为原料制备超细硅酸铝的工艺，并对产品的物理化学特性进行表征。

英文摘要：

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 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）.