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Effect of Flumag M Flux on Strength Properties of Iron Ore Pellets
Steel in Translation Pub Date : 2020-06-01 , DOI: 10.3103/s0967091220060030
A. A. Kozhukhov , A. S. Timofeeva , T. V. Nikitchenko

Currently, the most common fluxing additive to pellets is dolomite CaCO3 · MgCO3, in which the magnesium oxide content can form from 17 to 22%. If the magnesium oxide in pellets increases, then it is necessary to increase the dolomite dosage. Thus, the iron content decreases, which entails a decrease in yield ratio at subsequent processing. One of the fluxes containing magnesium is brucite. Compared with dolomite, magnesium oxide content in pure brucite is more than 3 times higher. The basis of Flumag M flux is brucite. The magnesium oxide content in it is not less than 55%. The paper presents a series of laboratory studies on the Flumag M flux dosage effects on the pelletizing ability of the charge and such properties of iron ore pellets as compressive, impact and abrasion strength. We have made the tests on raw and fired pellets with Flumag M flux. The comparative analysis of strength properties of the pellets obtained with the use of Flumag M and limestone was performed. The binder content, bentonite and magnetite concentrate, for all experiments remained unchanged. The experiment results indicate that Flumag M does not interfere with charge pelletizing ability. The strength of raw pellets for discharge and compression with Flumag M flux has small deviations from the pellets with the addition of limestone. Roasted pellets with the addition of Flumag M flux have higher strength than ones with limestone. The higher difference in strength properties is observed at the flux content of 2%.

中文翻译:

Flumag M 助焊剂对铁矿球团强度性能的影响

目前,最常见的球团助熔剂是白云石CaCO3·MgCO3,其中氧化镁含量可达17-22%。如果球团矿中的氧化镁增加,则需要增加白云石用量。因此,铁含量降低,这导致后续加工的屈服比降低。含镁的熔剂之一是水镁石。与白云石相比,纯水镁石中的氧化镁含量高出3倍以上。Flumag M 助焊剂的基础是水镁石。其中氧化镁含量不低于55%。本文介绍了一系列关于 Flumag M 助熔剂用量对炉料球团能力和铁矿球团抗压强度、冲击强度和磨损强度等性能的影响的实验室研究。我们已经使用 Flumag M 助焊剂对生丸和烧制丸进行了测试。对使用 Flumag M 和石灰石获得的球团的强度特性进行了比较分析。所有实验的粘合剂含量、膨润土和磁铁矿精矿保持不变。实验结果表明,Flumag M 不会干扰电荷造粒能力。使用 Flumag M 助熔剂排出和压缩的生球团的强度与添加石灰石的球团的强度有很小的偏差。添加 Flumag M 助熔剂的焙烧球团比使用石灰石的焙烧球团具有更高的强度。在 2% 的助焊剂含量下观察到强度特性的更大差异。所有实验的粘合剂含量、膨润土和磁铁矿精矿保持不变。实验结果表明,Flumag M 不会干扰电荷造粒能力。使用 Flumag M 助焊剂排出和压缩的生球团的强度与添加石灰石的球团的强度有很小的偏差。添加 Flumag M 助熔剂的焙烧球团比使用石灰石的焙烧球团具有更高的强度。在 2% 的助焊剂含量下观察到强度特性的更大差异。所有实验的粘合剂含量、膨润土和磁铁矿精矿保持不变。实验结果表明,Flumag M 不会干扰电荷造粒能力。使用 Flumag M 助熔剂排出和压缩的生球团的强度与添加石灰石的球团的强度有很小的偏差。添加 Flumag M 助熔剂的焙烧球团比使用石灰石的焙烧球团具有更高的强度。在 2% 的助焊剂含量下观察到强度特性的更大差异。添加 Flumag M 助熔剂的焙烧球团比使用石灰石的焙烧球团具有更高的强度。在 2% 的助焊剂含量下观察到强度特性的更大差异。添加 Flumag M 助熔剂的焙烧球团比使用石灰石的焙烧球团具有更高的强度。在 2% 的助焊剂含量下观察到强度特性的更大差异。
更新日期:2020-06-01
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