利用蛇纹石提镁残渣制备五水偏硅酸钠的研究

A Study on Preparation of Sodium Matasilicate Pentahydrate From Residue After Extracting Magnesium From Serpentine Ore

研究了由蛇纹石提镁残渣制备五水偏硅酸钠的方法 ,分析了制备过程中的各种影响因素 ,用实验确定了主要工序的最佳工艺条件。结果表明 ,该方法具有制备工艺温和 ,调模结晶过程无需蒸发浓缩 ,能耗低等特点 ,采用此法制得的五水偏硅酸钠质量符合化工行业标准。

The method is presented for preparation of sodium metasilicate pentahydrate from residue after extracting magnesium from serpentine ore. Various factors affecting the process are analysed and optimum operating conditions of main processes are studied. The results show that the process is characterized by moderate operating conditions, no need of evaporation in crystallization of sodium metasilicate pentahydrate and low energy consumption. Sodium metasilicate pentahydrate obtained by this method is up to the quality standards of the chemical industry of the People′s Republic of China.