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HomeMaterials Science ForumMaterials Science Forum Vol. 1016High Purity Magnetite Microparticles Directly...

High Purity Magnetite Microparticles Directly Derived from Mill Scale via Hydrogen-Reduction Method

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Abstract:

This study develops a fast and simple way to produce high purity magnetite (Fe₃O₄) microparticles from mill scale by using hydrogen reduction with the addition of vapour as a retarding agent. By optimising the reduction temperature and gas flow rate, the characterisations by X-ray diffractometry technique shown that the Fe₃O₄fraction of over 93 wt.-% is shown at the reduction temperature of 550 – 650 oC with the flow rate of the 4.5-5.5 mol%H₂ + Ar gas + H₂O gas mixture from 100 – 200 ml/min. The highest Fe₃O₄ fraction of over 99 wt.-% can be achieved from the reduction with the mixed gas at 650 oC and the flow rate of 200 ml/min for 4 hour.

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THERMEC 2021

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Periodical:

Materials Science Forum (Volume 1016)

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286-291

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https://doi.org/10.4028/www.scientific.net/MSF.1016.286

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Online since:

January 2021

Authors:

Autchariya Boontanom*, Piyada Suwanpinij

Keywords:

High Purity, Hydrogen Reduction, Magnetite, Microparticles, Mill Scale

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© 2021 Trans Tech Publications Ltd. All Rights Reserved

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