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

• Autorzy: Shin S. M. , Lee D.-W. , Yun J.-Y. , Kang Ch.-Y. , Wang J.-P.

Identyfikatory

DOI

10.1515/amm-2015-0170

Warianty tytułu

PL

Próby wytwarzanie proszku żelaza metodą redukcji zgorzeliny pochodzącej z procesów kucia za pomocą wodoru

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

forging scale; hydrogen partial pressure; hematite; iron powder

PL

kucie za pomocą wodoru; hematyt; redukcja zgorzeliny; proszek żelaza

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2015
• Tom: Vol. 60, iss. 2B
• Strony: 1547--1549
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Shin S. M.

• Mineral Resources Research Division, Korea Institute of Geoscience & Mineral Resources (KIGAM), Korea

autor

Lee D.-W.

• Titanium Department, Korea Institute of Materials Science (KIMS), Korea

autor

Yun J.-Y.

• Powder Technology Research Group, Korea Institute of Materials Science (KIMS), Korea

autor

Kang Ch.-Y.

• Department of Metallurgical Engineering, Pukyong National University (PKNU), Korea

autor

Wang J.-P.

• Department of Metallurgical Engineering, Pukyong National University (PKNU), Korea

Bibliografia

• [1] C. Wagner, J. of Metals. 4, 214-216 (1952).
• [2] R. Nicolle, A. Rist, Metal. Trans. B-Process Metal. 10(3), 429-438 (1979).
• [3] D. H. St John, P. C. Hayes, Trans. B-Process Metal. 13(1), 117-124 (1982).
• [4] D. H. St John, S. P. Matthew, P. C. Hayes, Metal. Trans. B-Process Metal. 15(4), 701-708 (1984).
• [5] D. H. St John, S. P. Matthew, P. C. Hayes, Metal. Trans. B-Process Metal. 15 (4), 709-717 (1984).
• [6] D. Wagner, O. Devisme, F. Patisson, D. Ablitzer, Sohn International Symposium, San Diego, 27-31 (2006).
• [7] L. V. Bogdandy, H. J. Engell, The Reduction of Iron Ores. (Berlin, Springer-Verlag, 1971)