A Study On The Fabrication Of Iron Powder From Forging Scale Using Hydrogen

Archives of Metallurgy and Materials

D.-W. Lee¹  J.-P. Wang²  S.M. Shin³  CH.-Y. Kang⁴  J.-Y. Yun⁵ 

[1] MINERAL RESOURCES (KIGAM), KOREA;DEPARTMENT OF METALLURGICAL ENGINEERING, PUKYONG NATIONAL UNIVERSITY (PKNU), KOREA;MINERAL RESOURCES RESEARCH DIVISION, KOREA INSTITUTE OF GEOSCIENCE &POWDER TECHNOLOGY RESEARCH GROUP, KOREA INSTITUTE OF MATERIALS SCIENCE (KIMS), KOREA;TITANIUM DEPARTMENT, KOREA INSTITUTE OF MATERIALS SCIENCE (KIMS), KOREA

关键词: Keywords: forging scale;    hydrogen partial pressure;    hematite;    iron powder;   

DOI  :  10.1515/amm-2015-0170

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

This study was conducted to investigate the effect of hydrogen content, temperature, reaction time for the reduction of forging scale which is mainly composed of hematite (Fe2O3). All reductive reactions were performed over the temperature range of 700 to 1200°C as well as 0.1 to 1 atm of hydrogen partial pressures. The results showed that the mechanism for the reduction of iron oxides using hydrogen gas was not a simple process, but proceeded in multiple reduction stages thermodynamically. The iron oxide was almost completely reduced to metallic iron powder with 91 wt.% of iron content in the forging scale at 0.1 atm of hydrogen partial pressure. The content of iron was however found to be increased with increasing hydrogen partial pressure from 0.1 to 1 atm with regardless of temperatures. The metallic iron powder was obtained with the mean size of 100 μm and more porous structure was observed.

【 授权许可】

Unknown