Advantages Of Using High Zirconia Refractories In Lead Crystal Glass Electric Furnaces

20 years ago, lead crystal glass was primarily melted in pot furnaces. This discontinuous fusion process inevitably meant a quality of glass that was difficult to control. To increase productivity and obtain high glass quality, it was necessary to change to a continuous melting process. Two choices existed, either traditional fuel oil or gas furnaces or electric furnaces. This article looks at the KTG electric furnace with tin oxide elctrodes installed in 1971.