Black slag, which is waste generated from the steel manufacturing process, is processed at our facilities to become a useful product for foundations and pavements.
Slag derived from eliminating impurities from steel with quicklime in the fusion process are classed as NON-HAZARDOUS WASTE according to order MAN/304/2002 of 8 February. Waste assessment and elimination operations are therefore published and classified under code 10 02 02 of the European List of Waste (LoW).
The steel manufacturing process has two phases. The first stage, called primary or fusion metallurgy, is where raw materials are melted in electric arc furnaces. The melting stage includes a series of phases such as oxidation, dephosphorisation and slag foaming; at the end of these phases the black slag is collected.