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Carbothermal reduction and nitridation of ilmenite concentrates

Journal Article


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Abstract


  • Carbothermal reduction and nitridation of ilmenite concentrates of different grades and synthetic rutile

    were studied in isothermal experiments in hydrogen – nitrogen gas atmosphere and pure nitrogen in a

    tube reactor. Concentrations of CO and CO2 in the off gas were measured online using infrared gas analyser.

    The reaction products were analysed by X-ray diffraction. Iron oxides in ilmenite concentrates were

    reduced to metallic iron, and titanium oxides were converted to titanium oxycarbonitride. Reduction of

    ilmenite concentrates and synthetic rutile in hydrogen containing gas was significantly faster than in pure

    nitrogen. The rate of conversion of titania to titanium oxycarbonitride in the 50 vol% H2-50 vol% N2 gas

    mixture decreased with increasing grade of ilmenite concentrate. In nitrogen, reduction of synthetic rutile

    was faster than reduction of ilmenite concentrates.

Authors


  •   Rezan, Sheikh A. (external author)
  •   Zhang, Guangqing
  •   Ostrovski, Oleg (external author)

Publication Date


  • 2012

Citation


  • Rezan, S. Abdul., Zhang, G. & Ostrovski, O. 2012, 'Carbothermal reduction and nitridation of ilmenite concentrates', Iron and Steel Institute of Japan (ISIJ) International, vol. 52, no. 3, pp. 363-368.

Scopus Eid


  • 2-s2.0-84859090775

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=7342&context=engpapers&unstamped=1

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/4410

Has Global Citation Frequency


Number Of Pages


  • 5

Start Page


  • 363

End Page


  • 368

Volume


  • 52

Issue


  • 3

Place Of Publication


  • Japan

Abstract


  • Carbothermal reduction and nitridation of ilmenite concentrates of different grades and synthetic rutile

    were studied in isothermal experiments in hydrogen – nitrogen gas atmosphere and pure nitrogen in a

    tube reactor. Concentrations of CO and CO2 in the off gas were measured online using infrared gas analyser.

    The reaction products were analysed by X-ray diffraction. Iron oxides in ilmenite concentrates were

    reduced to metallic iron, and titanium oxides were converted to titanium oxycarbonitride. Reduction of

    ilmenite concentrates and synthetic rutile in hydrogen containing gas was significantly faster than in pure

    nitrogen. The rate of conversion of titania to titanium oxycarbonitride in the 50 vol% H2-50 vol% N2 gas

    mixture decreased with increasing grade of ilmenite concentrate. In nitrogen, reduction of synthetic rutile

    was faster than reduction of ilmenite concentrates.

Authors


  •   Rezan, Sheikh A. (external author)
  •   Zhang, Guangqing
  •   Ostrovski, Oleg (external author)

Publication Date


  • 2012

Citation


  • Rezan, S. Abdul., Zhang, G. & Ostrovski, O. 2012, 'Carbothermal reduction and nitridation of ilmenite concentrates', Iron and Steel Institute of Japan (ISIJ) International, vol. 52, no. 3, pp. 363-368.

Scopus Eid


  • 2-s2.0-84859090775

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=7342&context=engpapers&unstamped=1

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/4410

Has Global Citation Frequency


Number Of Pages


  • 5

Start Page


  • 363

End Page


  • 368

Volume


  • 52

Issue


  • 3

Place Of Publication


  • Japan