福州一化硫酸化工有限公司每年生产硫酸铝的废渣达 30 0 0ｔ,长期以来没有得到充分利用 ,既占用了大片场地 ,又经过风吹雨淋 ,严重污染了周围的环境。我所开发室1 997年与该厂签订合同 ,合作研究开发此废渣。据取样分析 ,此废渣中ＳｉＯ2 含量高达6 0 % ,但绝大部分为不被植物 Fuzhou, a sulfuric acid Chemical Co., Ltd. annual production of aluminum sulfate waste up to 30 0t, has not been fully utilized, has occupied a large area of ​​venues, but also through the wind and rain, seriously polluted the surrounding environment. Our development room in 1997 signed a contract with the plant, research and development of this waste residue. According to the sampling analysis, the content of SiO2 in the residue is as high as 60%, but the vast majority is not covered by plants