EAF Slag and applications
ELECTRIC ARC FURNACE SLAG
Electric arc furnace slag (EAF) is a byproduct that outcomes from the 3rd phase of the metallurgical process, fine grained and amorphous due to sudden cooling into water consisted mainly of iron oxide and calcium carbonate.
The use of slag aggregates from iron and steel production in construction dates back to the Romans who used crushed slag from the crude iron production of that time to build their roads. Nowadays, slag is still used to build roads.
However, slag use is not limited to roads anymore, but slag aggregates are widely used in all kinds of civil works. An aggregate is a granular material used in construction. Properly applied aggregates contribute to the strength and mechanical stability of the construction.
Iron oxide Fe2O344% w.w.
Calcium carbonate CaCO3
Carbon dioxide CO2
Silicon oxide SiO2
Other oxides (of Al, Mg, Pb).
Slag may contain trace amounts of cobalt (Co) , nickel (Ni), chromium (Cr) and other trace compounds.
Slag is a nonmetallic byproduct of the production from the production of iron.
No chlorine and PA hydrocarbons.
Not classified as hazardous by EU regulations.
Grain size: 0-6mm
Specific Gravity: 3