酸法浸取粉煤灰制取氧化锗和氧化铝的研究

STUDY ON THE PREPARATION OF GeO 2 AND Al 2O 3 FROM COAL ASH BY ACID LEACHING METHOD.

报导了用硫酸浸取粉煤灰后，进一步用萃取法提取ＧｅＯ２和复盐热解法制取Ａｌ２Ｏ３的最佳实验条件和工艺参数。方法工艺流程简单，锗和铝的回收率高，可消除“灰害”，变废为宝，使粉煤灰得到高技术应用。

The optimum experimental conditions and process parameters for preparing GeO 2 and Al 2O 3 by extracting method and compound salt pyrolysis method respectively after leaching coal ash by sulfuric acid are reported.This method is characterized by simple process,high recovery rate of Ge and Al,and good utilization of coal ash.