水玻璃砂的发展

越恶霸虎严格的环保法规要求，必将给污染最少的水玻璃砂带来大发展的机遇，水玻璃砂理论和技术的进步，使得CO2法的水玻璃加入量有可能降低到2.5%-3.0%，有机酯法为2.0%-2.5%，微波法为0.5%-0.8%，再加上水玻璃旧砂化学再生法的发明，在不久几年内，水玻璃砂的溃散性和旧砂回用将接近或达到树脂砂的水平，水玻璃砂第三次大发展的条件日趋成熟。

The Development of Water-glass Sand

The rigorous requirement of circumstance protection gives thewater-glass sand without pollution a good chance to develop greatly. The advances of theory and technology on water-glass sand give the possibility to reduce the addition amount of water-glass down to 2.5%～3.0% for CO2 process, 2.0%～2.5% for organic ester process and 0.5%～0.8% for microwave cure process. With the help of the invention of chemical reclamation process of the used water-glass sand, collapsibility and reclamation of the water-glass sand may approach or be equal to these of resin sands within a few years. The conditions of third rapid development of water-glass sand have been established.