水玻璃旧砂的再生

Reclamation of used sodium silicate sand

介绍了水玻璃旧砂湿法、干法和热法再生原理,并简要说明了其应用情况;阐述了水玻璃旧砂化学再生的基本原理,并对水玻璃旧砂化学再生方面的研究及应用情况进行了论述。

The principle and method of physical reclamation of sodium silicate sand, which include dry reclamation, wet reclamation and thermal reclamation, are introduced summarily, and the research and application of these methods are introduced. The principle of chemical reclamation of sodium silicate sand through cognition of harden mechanism is presented. The research and present application condition about chemical reclamation are also related.