Essential raw material in sodalimesilica glass, melting ...
Chemical Composition. Calumite slag is used as a raw material in all types of sodalime silica glasses. As a melting and refining aid, it reduces furnace energy consumption, reduces NO x and CO 2 emissions, and improves final glass quality.. Calumite slag has traditionally been viewed as an alumina source, but it is a valuable source of all the major glassmaking oxides.