Effect of Injection Position on In-Flight Melting Behavior of Granular Alkali-Free Glass Raw Material in 12-Phase AC Arc Plasma

摘要

An innovative in-flight glass melting technology with a multi-phase AC arc plasma was developed to save energy and reduce emissions for the glass industry.The effect of the injection position on the in-flight melting behavior of granulated powders was investigated.Results show that the injection position has a strong effect on the melting behavior of alkali-free glass raw material.With the increase in injection distance,the vitrification,decomposition,and particle shrinkage of initial powders are improved.Longer injection distance causes much energy to transfer to particles due to a longer residence time of powder in the high temperature zone.The high vitrification and decomposition degrees indicate that the new in-flight melting technology with 12-phase AC arc can substantially reduce the melting and refining time for glass production.