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The Influence Of Fuel Reactivity On Iron Ore Sintering

机译:燃料反应性对铁矿石烧结的影响

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An experimental program conducted at CSIRO showed that flame front speed (ffs) and sinter productivity increased with fuel reactivity (r) while sinter strength and fuel utilisation fell. The following relationship modelled flame front speed for a JSM style sinter mix over a fuel reactivity range of 1×10~(-5) g/g/s to 4X10~(-3)rng/g/s:rnffs=0.2014·In(r)+4.039, R~2=0.997rnwhere ffs is flame front speed (cm/min) and ris fuel reactivity (g/g/s).rnThe CSIRO research concluded that rapid heating of the lower bulk density green granules and endother-mic fuel gasification preceding the flame front are dominant factors that contribute to changes in flame front speed. While productivity was significantly increased, less time at temperature reduced sinter strength and gasification contributed to poor fuel utilisation under the standard sintering conditions used for the experiments. A range of changes to sinter mixes and sintering conditions are proposed to overcome the negative aspects of increased fuel reactivity while continuing to exploit the positives.
机译:在CSIRO进行的一项实验程序表明,火焰前沿速度(ffs)和烧结矿生产率随燃料反应性(r)的增加而烧结矿强度和燃料利用率下降。以下关系模型在燃料反应性范围为1×10〜(-5)g / g / s至4X10〜(-3)rng / g / s的JSM型烧结混合物的火焰前沿速度上建模:rnffs = 0.2014·In (r)+4.039,R〜2 = 0.997rn,其中ffs是火焰前移速度(cm / min)和ris燃料反应性(g / g / s).rn CSIRO研究得出结论是快速加热较低堆积密度的生料颗粒和吸热剂火焰前沿之前的微燃料气化是导致火焰前沿速度变化的主要因素。虽然生产率显着提高,但在较短的时间内烧结温度降低,烧结强度和气化作用导致在实验所用的标准烧结条件下燃料利用率差。提出了对烧结混合物和烧结条件的一系列改变,以克服增加燃料反应性的不利方面,同时继续利用其积极性。

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