Preparation of Electric ARC Furnace Steel Slag as Hazardous Waste Using the Slag Atomizing Technology in Pt Krakatau Steel - Indonesia

by Eka Syuhada

Publisher - PT. Krakatau Steel, Cilegon – Indonesia

Category - General Novel

EAF slag is by product arising in a huge volume in steel making (15 – 20% of melt capacity). Depending on the steel making process and slag tretment, it contains metal residues. Treatment of these slags used to be difficult and the treatment methods inefficient. Based on the National Regulation, the steel slags ( EAF slags ) are hazardous wastes catagories. Its shall meet government regulation about the hazardous wastes management, so the steel slags ( EAF slags) must be handled and managed meet those regulations. Since 1st December 2008, PT Krakatau Steel used the environmental friendly technology i.e. Slag Atomizing Technology. The slag atomizing technology (SAT) is a new system adopted to atomized molten slag from electric arc furnaces in a highly efficient way. This technology is very economical compared with traditional methods of aging and crushing. The product of the SAT process are spherically shaped with different diameters, so-called PS (Precious Slag) balls. Slag Atomizing technology (SAT) is invented, patented and commercialized by Ecomaister Co., Ltd of Korea. The molten slag is immediately converted to environmental friendly. PS Ball as soon as it is dumped into the SAT system. SAT is a strategic approach to overcome the environmental problem of Electric arc Furnace (EAF) slags.

Please login to borrow the book.