(PDF) IRON AND STEELMAKING SLAGS: ARE THEY HAZARDOUS .
The more advanced way to smelt iron is in a blast furnace. A blast furnace is charged with iron ore, charcoal or coke (coke is charcoal made from coal) and limestone (CaCO 3 ). Huge quantities of air blast in at the bottom of the furnace, and the calcium in the limestone combines with the silicates to form slag.RECYCLING AND ENVIRONMENTAL ISSUES OF METALLURGICAL SLAGS AND SALT FLUXES 349 Introduction . using iron ore as raw material in Blast Furnace(BF) for ironmaking, basic oxygen steelmaking (BOF) for steel . and thus increase the load of salt slag recycling. Keywords: recycling, environment, metallurgy, slags, fluxes, salts. .