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 (coke breeze) addition on sinter mineralogy, properties and productivity.

This review focuses on explaining the role that various reductants/fuels play in the sintering of iron ore and how those choices affect product quality and the surrounding ecosystem.

Iron ore sinter is one of most extensively utilised ferrous burdens for blast furnace (BF) worldwide. The sinter quality greatly depends on the microstructure and chemical compositions of calcium ferrites which is significantly affected by sinter basicity (mass ratio of CaO to SiO 2).The characterisation of iron ore sinter products with varying binary basicity …

A number of the commercial iron ores were tested in a sinter pot to study the effect of iron ore composition on the sintering properties. In the sintering of individual iron ores, under the sinter ...

Fig 1 Flowsheet of sintering process. The iron ore fines are natural ore of size 0 mm to 10 mm. The raw mix (also called sinter mix) is made with the weighed amount of iron ore fines, limestone, dolomite, sand or quartzite fines …

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 in forming the primary …

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 replace low alumina limonite that has been ...

The low alumina sinter showed higher productivity and strength, and lower RDI due to the presence of higher silico ferrites of calcium and aluminium (SFCA) and magnetite phase, and lower pore phase as compared to high alumina iron ore sinter.

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.

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.

The low Al2O3 (<2.0 wt%), medium MgO (2.0–2.5 wt%) and high basicity (>3.0) sinter showed higher low temperature degradation index (LTD) due to the presence of silico …

of mineral phases and microstructure in sinter. The low Al 2O 3 (<2.0 wt%), medium MgO (2.0–2.5 wt%) and high basicity (>3.0) sinter showed higher low temperature degradation index (LTD) due to the presence of silico ferrites of calcium and aluminium (SFCA), and magnetite phase, and lower pore phase as compared to low basicity iron ore sinter.

This paper attempts to clarify the role of different types of alumina present in iron ore fines and their effects on melt formation, sinter structure and sinter quality, as well as the sintering …

The sinters made from the low alumina commercial iron ores (A 1, A 4, B 1) presented the higher tumbler strength (JIS TI 54–61%) and the lower coke rate (45–52kg/t·sinter), and required the …

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. The detailed microstructural and morphological …

The sintering pot test was used to investigate the effect of MgO/Al2O3ratio in the range of 1.2 to 2.2 on the sintering behavior of iron ore. The main characterization methods of X-ray diffraction ...

The quality of iron ore sinter mainly depends on sinter mineralogy, which in turn depends on the chemical composition of the sinter mix. Dolomite is the critical additive for fluxing the sinter ...

This paper deals with the influence of alumina in iron ore on sinter properties and sinter productivity formed by both the conventional and selective granulation process. Literature review on the effect of alumina on pellet properties.

The sinter plant that converts the iron ore fines into a desirable blast furnace feed, offers an avenue for recycling wastes. One of the several wastes that are produced at an iron and steel plant is the undersized pellet fines, which cannot be directly used in iron making. The present study evaluated the influence of these pellet fines on the sintering process. 5 …

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 increase in Al 2 O 3 content …

Overall, kaolinite is the most desirable alumina occurrence for iron ore sintering while aluminous goethite is only next to kaolinite. Free alumina and gibbsite are much more …

A high alumina ore may produce the sinter with a very low or very high RDI. The sintering properties of blending ores, including productivity, TI, RI, suitable moisture and coke …

properties while higher alumina content in sinter leads to the formation of SFCA which improves ... Keywords: Iron ore sinter, Alumina, Structure, Reduction, Microanalysis, Silico calcium ...

The structure of iron ore sinter is not uniform. It consists of pores (of varying sizes) and a complex aggregate of phases, each with different properties. It is the combination of these pores and phases, and the interaction between them that determines the sinter properties, but also makes the prediction of sinter properties so difficult1,2. Various studies are reported in the …

The silico-ferrite of calcium and aluminium, known as SFCA phases, are considered the most favourable bonding phases in iron ore sintering due to their excellent characteristics, including high reducibility, stronger mechanical strength, and minimal reduction degradation. 11 These properties play an important role in influencing the productivity and …

Iron ore sinter is the major source of iron in the burden to the modern blast furnace. Hence the appropriate chemical, physical and metallurgical properties of sinter in the blast furnace are essential to its efficient and stable operation. Iron ore fines are the main source for sinter and the chemical composition of the iron ore fines and thermal conditions within the …

The ore is a typical limonite, which could help to reduce the production cost of hot metal. The assimilation and fluidity properties of the new kind of high alumina iron ore were investigated, comparing with other kinds of …

Calcium ferrite containing aluminum (CFA) is a precursor of the low-temperature bonding phase in the sintering process of iron ore fines for blast furnace ironmaking. Thus, improving the formation of CFA at lower temperature is very important for saving energy, improving efficiency and production. In this paper, the formation process of CFA was …

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 ...

The quality of sinter is judged by its chemical, physical and metallurgical properties, which are required for blast furnace. When maximum alumina content in the iron ore fines is 1·5%, alumina to silica ratio of <1·0 is …