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A study into bonding within reduced titanomagnetite-coal compacts

Conference Paper


Abstract


  • In this study the bonding within reduced titanomagnetite-coal compacts was investigated. The aim

    of the study was to better understand the binding mechanisms in the reduced compacts and, based

    on this understanding, to improve on their strength.

    Titanomagnetite ore was combined with sub-bituminous coal to form compacts. The compacts

    were then reduced by heating in a thermogravimetric furnace (TGA) to temperatures between

    1000 - 1300°C under argon. The reaction progress was monitored by measuring the weight loss

    with time. The reduced compacts were found to have low strength in compression testing. The

    main form of bonding between the reduced titanomagnetite particles in the compact was by the

    formation of a slag-like material. Increasing the fi nal reduction temperature was found to have

    a profound effect on the strength of the compacts by promoting the formation of this slag-like

    material.

    Attempts to improve the strength of the compacts were made by changing two variables, the

    type of coal and the addition of rice husks. The addition of coking coal gave reacted samples that

    had little strength, while the addition of rice husks may have enhanced the strength of the reduced

    compacts.

Publication Date


  • 2011

Citation


  • Longbottom, R. J., Monaghan, B. J., Nightingale, S. A. & Mathieson, J. G. (2011). A study into bonding within reduced titanomagnetite-coal compacts. Iron Ore 2011 (pp. 459-469). Victoria: The Australiasian Institute of Mining and Metallurgy.

Scopus Eid


  • 2-s2.0-84866723089

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/3377

Has Global Citation Frequency


Start Page


  • 459

End Page


  • 469

Place Of Publication


  • Victoria

Abstract


  • In this study the bonding within reduced titanomagnetite-coal compacts was investigated. The aim

    of the study was to better understand the binding mechanisms in the reduced compacts and, based

    on this understanding, to improve on their strength.

    Titanomagnetite ore was combined with sub-bituminous coal to form compacts. The compacts

    were then reduced by heating in a thermogravimetric furnace (TGA) to temperatures between

    1000 - 1300°C under argon. The reaction progress was monitored by measuring the weight loss

    with time. The reduced compacts were found to have low strength in compression testing. The

    main form of bonding between the reduced titanomagnetite particles in the compact was by the

    formation of a slag-like material. Increasing the fi nal reduction temperature was found to have

    a profound effect on the strength of the compacts by promoting the formation of this slag-like

    material.

    Attempts to improve the strength of the compacts were made by changing two variables, the

    type of coal and the addition of rice husks. The addition of coking coal gave reacted samples that

    had little strength, while the addition of rice husks may have enhanced the strength of the reduced

    compacts.

Publication Date


  • 2011

Citation


  • Longbottom, R. J., Monaghan, B. J., Nightingale, S. A. & Mathieson, J. G. (2011). A study into bonding within reduced titanomagnetite-coal compacts. Iron Ore 2011 (pp. 459-469). Victoria: The Australiasian Institute of Mining and Metallurgy.

Scopus Eid


  • 2-s2.0-84866723089

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/3377

Has Global Citation Frequency


Start Page


  • 459

End Page


  • 469

Place Of Publication


  • Victoria