Abstract：Due to the depletion of reserves of traditional high-grade iron ore, the ore resources have changed drastically from hematite to complicated and comprehensive ore types. However, the level of impurities and loss on ignition in some kinds of iron ores are relatively higher, and more iron ore fines in the ores, which have significant impacts on sinter quality and sintering performance, including Fe-grade, sinter strength, and solid fuel consumption. Magnetite concentrate is typically high in Fe grade and releases extra heat when oxidized to hematite. This will not only improve the sinter quality and but also have a beneficial impact on the fuel consumption of the sintering process. But, most of the concentrates available are very fine, which will negatively impact the green bed permeability and consequently the productivity of the sintering process. This paper first discusses the sintering characteristics of magnetite concentrates, and then reviews and comments on the recent technological advances in sintering with high proportions of magnetite concentrates, including additive technology, pre-treatment technology, multi-sintering technology, gas fuel injection technology, double layers of pre-sintering technology etc. In order to obtain the full advantage of magnetite, the permeability and chemical reactions in the sintering bed were reviewed, which can give theoretical guidance and technology support for the application of 100% and high proportion magnetite in sintering process.
周明顺. 高配比磁铁精矿烧结技术的研究进展[J]. , 2020, 55(5): 0-0.
Ming-Shun ZHOU. Development on the Sintering Technologies with High Proportion of Magnetite Concentrates. , 2020, 55(5): 0-0.
2020, Vol. 55 
