Development of Monitoring System of Dehydration of Iron Ore

A new monitoring system for water in iron ore has been established. Ore sample in nitrogen gas flow was heated with an electric furnace, and generated water was lead continuously to the Fourier-transform infrared spectrometer (FT-IR) with nitrogen gas carrier. This monitoring system has a time-resol...

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Veröffentlicht in:Tetsu to hagane 2002/11/01, Vol.88(11), pp.736-740
Hauptverfasser: NISHIFUJI, Masayuki, FUJIOKA, Yuji, SAITO, Koji, OKAZAKI, Jun
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container_issue 11
container_start_page 736
container_title Tetsu to hagane
container_volume 88
creator NISHIFUJI, Masayuki
FUJIOKA, Yuji
SAITO, Koji
OKAZAKI, Jun
description A new monitoring system for water in iron ore has been established. Ore sample in nitrogen gas flow was heated with an electric furnace, and generated water was lead continuously to the Fourier-transform infrared spectrometer (FT-IR) with nitrogen gas carrier. This monitoring system has a time-resolved of 12 sec minimum on the condition with invented gas measuring cell and gas lines. Using this system, different profiles of water generated from several drop-shaped iron ore samples could be obtained. It was found that they should have two peaks of water generated from goethite [α-FeO(OH)] and Kaolin at the different range of temperature. Furthermore, the calibration curve with copper sulfate penta hydrate of a standard material showed good linearity. The analytical results of water in ore samples were in good agreement with their values analyzed by JIS method. The present system will be applied to characterize the mechanism of pore formation on sinter reaction of iron ore.
doi_str_mv 10.2355/tetsutohagane1955.88.11_736
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subjects iron ore
iron ore sinter
monitoring system
water
title Development of Monitoring System of Dehydration of Iron Ore
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