METHOD FOR MANUFACTURING COLORLESS INDUSTRIAL SODA-LIME GLASS

摘要

PROBLEM TO BE SOLVED: To provide a method of manufacturing industrial soda-lime glass which is made colorless without using a harmful selenium compound. ;SOLUTION: In manufacturing the colorless industrial soda-lime glass from the raw material of the industrial soda-lime glass containing iron which is the cause for coloring in a low valence state, this method is furnished with a process step of preparing a glass melt by adding tin oxide to the raw material, then melting the raw material and a process step of inserting an anode and cathode into the glass melt, impressing a DC voltage between the anode and the cathode to continuously generate oxygen air bubbles, thereby making the iron in the glass melt into the high valence.;COPYRIGHT: (C)2003,JPO