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A Study into Bonding within Reduced Titanomagnetite-Coal Compacts

机译：还原钛磁铁矿-煤压块内粘结的研究

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摘要

In this study the bonding within reduced titanomagnetite-coal compacts was investigated. The aimrnof the study was to better understand the binding mechanisms in the reduced compacts and, basedrnon this understanding, to improve on their strength.rnTitanomagnetite ore was combined with sub-bituminous coal to form compacts. The compactsrnwere then reduced by heating in a thermogravimetric furnace (TGA) to temperatures betweenrn1000 - 1300℃ under argon. The reaction progress was monitored by measuring the weight lossrnwith time. The reduced compacts were found to have low strength in compression testing. Thernmain form of bonding between the reduced titanomagnetite particles in the compact was by thernformation of a slag-like material. Increasing the fi nal reduction temperature was found to haverna profound effect on the strength of the compacts by promoting the formation of this slag-likernmaterial.rnAttempts to improve the strength of the compacts were made by changing two variables, therntype of coal and the addition of rice husks. The addition of coking coal gave reacted samples thatrnhad little strength, while the addition of rice husks may have enhanced the strength of the reducedrncompacts.
机译：在这项研究中，研究了还原的钛磁铁矿-煤块中的结合。该研究的目的是更好地了解还原压块中的结合机理，并以此为基础来提高其强度。钛磁铁矿矿石与次烟煤结合形成压块。然后通过在热重炉（TGA）中在氩气下加热至1000-1300℃之间的温度将压坯还原。通过测量随时间的重量损失来监测反应进程。在压缩测试中发现还原的压块具有低强度。压块中还原的钛磁铁矿颗粒之间的主要结合形式是通过形成炉渣状材料。人们发现提高最终还原温度通过促进这种矿渣状材料的形成对压坯的强度具有深远的影响。试图通过改变两个变量来改变压坯的强度，即改变煤的热类型和添加煤的类型。稻壳。焦煤的添加使反应后的样品强度很小，而稻壳的添加可能增强了还原的压粉的强度。

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  • 来源
    《Iron ore 2011》|2011年|p.459-469|共11页
  • 会议地点 Perth(AU)
  • 作者

    R J Longbottom; B J Monaghan; S A Nightingale; J G Mathieson;

  • 作者单位

    PYROmetallurgical Research Group, University of Wollongong, NSW 2522. Email: rayl@uow.edu.au;

    PYROmetallurgical Research Group, University of Wollongong, NSW 2522. Email: monaghan@uow.edu.au;

    PYROmetallurgical Research Group, University of Wollongong, NSW 2522. Email: sharon@uow.edu.au;

    BlueScope Steel Limited, PO Box 202, Port Kembla NSW 2505. Email: John.Mathieson@bluescopesteel.com;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 铁矿石;
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