Open AccessRecovery of iron from electric arc furnace slag: effect of heating temperature and time
Author(s) -
Norhaslinda Nasuha,
Nurizani Edora Rohizat,
Rasyidah Alrozi,
Nor Aida Zubir,
Hawaiah Imam Maarof
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/551/1/012119
Subject(s) - electric arc furnace , hematite , iron oxide , metallurgy , slag (welding) , agglomerate , oxide , materials science , leaching (pedology) , scanning electron microscope , magnetite , metal , pyrometallurgy , chemistry , smelting , composite material , environmental science , soil science , soil water
This work presents the iron oxide recovery from electric arc furnace slag with different temperature and time using acid leaching method. The results showed that formation of iron oxide from electric arc furnace (IO-EAFS) was influenced by the temperature and time of heating. This is evidenced by constant acid concentration and liquid to solid ratio, 5 hours of heating time was exhibited the highest amount of iron ion in extracted solution. The maximum of iron extract in heating temperature was at 100 °C. Throughout the characterization using Scanning Electron Microscopy (SEM), the iron oxide illustrated the microstructures were agglomerates predominantly with irregular shapes and XRD results further colobrated the presence of hematite combined with other metal oxide exists in the IO-EAFS. From the TGA analysis, it was identified that the recovered iron oxide was totally decomposed at 525°C. This results indicate that electric arc furnace slag is potential material of iron oxide for the future appliction.