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首页> 外文期刊>ISIJ international >Sintering Fundamentals of Magnetite Alone and Blended with Hematite and Hematite/Goethite Ores
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Sintering Fundamentals of Magnetite Alone and Blended with Hematite and Hematite/Goethite Ores

机译：磁铁矿的烧结基础，并与赤铁矿和赤铁矿/针铁矿矿石混合

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摘要

This work overviews the properties and sintering behaviour of Chinese magnetite concentrates, and interactions between magnetite concentrates and imported hematite, hematite/goethite ores in sintering. Sintering performance of several Chinese ore blends was also presented to provide greater understanding of the behaviour of imported hematite and hematite/goethite ores. Chinese magnetite concentrates are generally more complex in chemistry and mineralogy and less reactive compared to hematite, Marra Mamba and goethite ores. Sinter beds formed from blends containing high level of magnetite concentrate are more deformable, and thus this could reduce their green bed permeability during charging and application of suction. SFCA formation in magnetite sintering occurs primarily in the cooling stage as magnetite oxidation is rather limited prior to the arrival of high temperature zone. Porous hematite and Marra Mamba ores are easy to react and hence assist melt formation. Addition of porous hematite and Marra Mamba ores to magnetite concentrates improves granulation efficiency and sintering performance considerably.
机译：这项工作概述了中国磁铁矿精矿的性质和烧结行为，以及烧结过程中磁铁矿精矿与进口赤铁矿，赤铁矿/针铁矿矿石之间的相互作用。还介绍了几种中国矿石混合料的烧结性能，以更好地了解进口赤铁矿和赤铁矿/针铁矿的行为。与赤铁矿，Marra Mamba和针铁矿相比，中国磁铁矿精矿的化学和矿物学特征更为复杂，反应性较低。由含有大量磁铁矿精矿的混合物形成的烧结床更易变形，因此，这可能会降低其在装料和施加抽吸过程中的生床渗透率。磁铁矿烧结过程中的SFCA形成主要发生在冷却阶段，因为磁铁矿的氧化在高温区到来之前相当有限。多孔赤铁矿和Marra Mamba矿石易于反应，因此有助于熔体形成。在磁铁矿精矿中添加多孔赤铁矿和Marra Mamba矿石可显着提高造粒效率和烧结性能。

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