A term that refers generally to a by-product of blast furnaces during steel manufacture and comprising primarily calcium silicates and alumino-silicates. It is used for a variety of purposes including as Portland Cement (see CEMENT) substitute, as an...

Slags are the by-product of smelting ore to purify metals. They can be considered to be a mixture of metal oxides; however, they can contain metal sulfides and metal atoms in the elemental form. While slags are generally used as a waste removal...