Production of pig iron nugget from low-grade iron ore and pyrolyzed oil-palm-empty-fruit-bunch composites

Conference on Innovation in Technology and Engineering Science

工业技术（总论）

Setiawan, A.^1 ; Suratha, R.P.^1 ; Harjanto, S.^1 ; Kusrini, E.^2

Department of Metallurgy and Materials Engineering, Faculty of Engineering, Universitas Indonesia, Kampus Baru UI Depok

16424, Indonesia^1

Departement of Chemical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus Baru UI Depok

16424, Indonesia^2

关键词: Chemical compositions;    Empty fruit bunches;    Energy dispersive X ray spectroscopy;    Holding time;    Metallic iron;    N2 atmospheres;    Pyrolyzed oil;    Reduction degree;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/602/1/012073/pdf
DOI  :  10.1088/1757-899X/602/1/012073

学科分类：工业工程学

来源: IOP

【 摘 要 】

Utilization of low-grade iron ore and pyrolyzed oil palm empty fruit bunch (EFB) is an effective way as the solution to deal with the depletion of iron reserves and administer of empty fruit bunch waste. This study was aimed to analyze the pig iron that is produced by carbothermic reduction of low-grade iron ore with pyrolyzed palm oil EFB as a reductant. The ore from Lampung was reduced at temperature 1400°C and 1450°C for holding time 40 minutes with inert condition (N2 atmosphere). The structures of pig iron were studied by using X-Ray diffraction (XRD), and the microstructures and chemical composition were analyzed by using Scanning Electron Microscopy-Energy Dispersive X-Ray Spectroscopy (SEM-EDS). It was found that iron nugget that was reduced at 1450°C for 40 minutes that was wholly separated from its slag, with reduction degree 98.5%, metallization degree 99.2%. The microstructure has metallic iron as a base with some pores. On the other hand, the other iron nuggets that are not separated from its slag consist of two prominent phases, metallic iron and lamellar fayalite (Fe2SiO4).