Recovery of iron from electric arc furnace slag: effect of heating temperature and time

Joint Conference on Green Engineering Technology & Applied Computing 2019

工业技术（总论）;计算机科学

Nasuha, Norhaslinda^1^2 ; Shaziela Nobri Mohd Shukri, Nor^1 ; Edora Rohizat, Nurizani^1 ; Alrozi, Rasyidah^1^2 ; Aida Zubir, Nor^1^2 ; Imam Maarof, Hawaiah^2^3

Faculty of Chemical Engineering, Universiti Teknologi MARA, Cawangan Pulau Pinang, Pulau Pinang

13500, Malaysia^1

Hybrid Nanomaterial, Interface and Simulation (HYMFAST), Faculty of Chemical Engineering, Universiti Teknologi MARA, Cawangan Pulau Pinang, Pulau Pinang

13500, Malaysia^2

Faculty of Chemical Engineering, Universiti Teknologi MARA Shah Alam, Selangor, Shah Alam

40450, Malaysia^3

关键词: Acid concentrations;    Acid leaching;    Electric arc furnace;    Electric arc furnace slags;    Heating temperatures;    Irregular shape;    Liquid to solid ratio;    Potential materials;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/551/1/012119/pdf
DOI  :  10.1088/1757-899X/551/1/012119

来源: IOP

【 摘 要 】

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.