Panigrahy, S.C., Rigaud, M.A.J. and Dilewijns, J. (1985) Effect of Dolomite Addition on the Properties of Sintered Ore Produced from the High Iron Ore of Alumina. Steel Research, 56, 35. 6. Pimenta, H.P. and Seshadri, …
With the continuous huge demand for steel in China and increasing consumption of high-quality iron ores worldwide, low grade iron ores have been …
At the same time, as per the blast furnace requirement, the rate of addition of dolomite has been changed from 2·40 to greater than 3·00% at the sinter plant 1. In iron ore sinter, MgO plays ...
2 and MgO, the sintering properties varied with iron ore type greatly. The sinters made from the dense low alumina iron ores presented the higher tumbler strength and the lower coke rate, but the RDI was not simply related to the alumina level of iron ore. A high alumina ore may produce the sin-ter with a very low or very high RDI.
The metallurgical properties of iron ore sinter mainly depends on sinter mineralogy and microstructure, which in turn depends on the chemical composition of the sinter mix.
Facing the consumption of high-grade iron ore, high-alumina iron ore emerges as a potential alternative for steel companies aiming to cut costs and address resource shortages. This study systematically investigated the impact of increasing the proportion of high-alumina iron ore on sintering performance through sinter pot tests. …
Abstract. Mauritanian iron ore powder (OM) has advantages of high iron grade, low aluminum content, and low loss on ignition, which can be used as a new mineral to …
Studies have been carried out on low and high alumina iron ore fines to know the influence of sinter basicity and fuel (coke breeze) addition on sinter mineralogy, properties and productivity.
Figure 9a—Influence of MgO content of the sinter on the AI (fused magnesia addition, high silica-low alumina sinter) - "Investigation into how the magnesia, silica, and alumina contents of iron ore sinter influence its mineralogy and properties"
The product ion of high strength iron ore sinter for blast furnace iron making unit was developed by optimizing the granulometry of less than − 0.150 mm …
Because of wide range of fluctuation in iron ore silica it is essential to optimise the MgO addition in sinter mix to get desired properties. Laboratory pot grate sintering experiments have been carried out to know the influence of MgO addition on microstructure and properties of low silica and high silica sinter.
The portion of −20 µm in iron ore concentrate favoured the granulation and the productivity in conventional sintering, but the portion of +45 µm had the reverse effects. With …
Facing the consumption of high-grade iron ore, high-alumina iron ore emerges as a potential alternative for steel companies aiming to cut costs and address resource shortages. This study systematic...
Iron ore sinter constitutes a major proportion of blast furnace burden. Hence, its quality and consistency have a significant impact on blast furnace performance. Iron ore fines are the main source for sinter, and the chemical composition of the iron ore fines, together with the thermal conditions that blends are subjected to, plays an important role …
Canadian iron concentrate (CIC) can elevate the ferrous grade and lower the contents of gangue components and harmful elements in the sinter. To understand high-temperature characteristics of CIC and typical iron ore, the formation of the melt was calculated mainly through FactSage 7.2, and melt fluidity (MF) test for iron ore fines and …
Like other sintering processes, iron ore sintering converts iron ore fines of often − 8 mm sizing into larger agglomerates, namely, sinter, between 5 and 50 mm particle size, which possess the physical and metallurgical characteristics and gas permeability required for efficient blast furnace operation.As shown in Figure 14.1, iron ore sintering …
The basic characteristics of iron ore, including assimilation, fluidity, cohesive phase strength and the ability to produce calcium ferrite, are often used to evaluate the sintering properties of iron ore and guide the optimization of iron ore …
Iron ore sinter, constituting a major proportion of blast furnace burden, significantly impacts the blast furnace performance. The chemical composition of iron ore fines, particularly alumina, sinter basicity and sinter MgO together with the thermal conditions that sinter blends are subjected to play an important role in the formation of mineral phases in …
Investigation into how the magnesia, silica, and alumina contents of iron ore sinter influence its mineralogy and properties
High-alumina iron ore sintering is characterized by poor sinter indices and high carbon emission due to the limited formation amount of liquid phase. In this study, the conventional Ca-bearing flux (i.e., burnt lime) was substituted by a new Ca-bearing flux with low melting point (i.e., prefabricated calcium ferrite) for the improvement of the formation …
With respect to the high-temperature soft melting properties, the sinter with a basicity of 1.8 exhibits a narrower soft melting interval and higher dripping temperature than those observed at other basicities. ... on low and high alumina iron ore sinter quality. Miner. Process. Extr. Metall. 2013, 123, 75–85. 10.1179/1743285514Y.0000000052. ...
of the sinter pot test indicated that the properties of sinter have been improved. Keywords Mauritanian iron ore powder Liquid fluidity Penetration Mineral composition Sintering Ore blending Low alumina limonite 1 Introduction With the rapid development of the global iron and steel industry, a large number of high-quality iron ore resources
This is ascribed to the elevated alumina content of the SFCA phase in SiM-A sinter, and the comparatively low alumina content of the SFCA phase in SiM-S. Interestingly, ... Correlation between the mechanical properties of iron ore sinter and the chemical composition of the calcium aluminosilicoferrite Ca 2 (Ca,Fe,Mg) 6 ...
The quality of iron ore sinter mainly depends on sinter mineralogy, which in turn depends on the chemical composition of the sinter mix. ... Influence of magnesia on iron ore sinter properties and productivity, Steel Res. Int., 80, 799–806. Google Scholar. Webster N. A. S., Pownceby M., Madsen C., Scaelett N. V. Y., Lu L., and Manuel J. R ...
In contrast, iron ore 2# contains low iron grade of 58.09%, Al 2 O 3 content of 1.59% and high LOI content of 9.76%, resulting in the formation of larger pores and degradation of its sinter matrix strength. As with iron ore 6#, it is also a hematite ore with relatively high iron grade and low LOI content, which may present some positive effects ...
The quality of iron ore presently being used calls for extensive investigations to produce low basicity sinter with high alumina iron ore. Studies have been carried out on low and high alumina iron ore fines to know the influence of sinter basicity and fuel …
Xue et al. and Webster et al. considered that iron ore in which the primary source of alumina was gibbsite was less likely to form high-quality sinter due to the low reactivity of the alumina leading to small amounts of silico-ferrite of calcium and alumina (SFCA) and SFCA-I, whereas, iron ore containing alumina in the form of kaolinite or ...
Alumina powder was added to the sinter mixes of indi- vidual iron ores to study the effect of alumina on the sinter- ing properties. 1)It was found that with an increase in the …
With the continuous huge demand for steel in China and increasing consumption of high-quality iron ores worldwide, low grade iron ores have been imported in enormous quantities by China, specially alumina-rich iron ores [[1], [2], [3], [4]].Thus, iron ore sinter as the major burden for blast furnace production is achieving an obvious …
The influence of varying amounts of magnesia, silica, and alumina in Iron ore sinter on its mineralogy, reducibility index (RI), reduction disintegration index (RDI), physical breakdown (AI and TI ...
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