The high-quality Ni–Cr sinter obtained from the low-carbon pellet-sintering process can be used as the qualified burden for Fe–Cr–Ni alloy smelting at lower cost. ... Umadevi T, Deodar AV, Mahapatra PC, Prabhu M, Ranjan M (2009) Influence of alumina on iron ore sinter properties and productivity in the conventional and selective ...
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The properties of the iron ore sinter are controlled by the composition and distribution of these mineral phases [1,2,3]. ... Generally low reactivity of alumina and high viscosity of slag containing alumina can lead to a weaker sinter structure with more irregular interconnected pores. During sintering process, alumina also requires large ...
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The sintering properties of ores are evaluated separately according to each stage in sintering process, which is the heating stage before melt formation, primary melt …
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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 ...
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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 ...
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In sintering of iron ore, small particles act as a binder that joins larger particles through diffusion and melting. In order to understand the effect of gangue and structure of coarse ore on ...
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The results showed that the melt formation and fluidity properties of the high alumina iron ore were not good, and it had adverse effect on sinter quality. The yield and strength of the ... The reducibility first increased then decreased, and the low temperature ... effect of the high alumina iron ore on the sintering process. The sintering pot ...
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Semantic Scholar extracted view of "Effect of alumina occurrence on sintering performance of iron ores and its action mechanism" by Yu-xiao Xue et al.
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It was reported1–6 that alumina could exhibit negative effects on gas permeability resistance in sintering processes as well as on the reducibility of the iron ore sinter in the lower part of the cohesive zone of BF. Many investigators studied the effect of alumina on the properties of sinter and its behaviour in BF conditions.
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The selective granulation process is a new sintering process for high alumina iron ore fines, and can eliminate the adverse effects of 'hard to sinter' or …
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The effect of addition of the iron ore on sintering process was also performed in a sintering pot, and the properties of the sinter samples were then examined. The results showed that the melt formation and fluidity properties of the high alumina iron ore were not good, and it had adverse effect on sinter quality.
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In the iron ore sintering process, the particle size distribution of the raw materials influences the properties of the produced sinter. In the sinter base mix, the proportion of iron ore fines is relatively much higher than that of other raw materials, and therefore, its size distribution has a larger influence on sinter properties.
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The flow and penetration behaviours of the liquid phase on nuclei ore play crucial roles in the bonding of the sinter. In this study, the flow and penetration tests of the liquid phase and simulation tests were conducted to study the effects of SiO2 and Al2O3 contents of the adhering fines on the flow area (FA) and maximum penetration depth …
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The basic characteristics of Australian iron ore concentrate (Ore-A) and its effects on sinter properties during a high-limonite sintering process were studied using micro-sinter and sinter pot … Expand
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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.
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The properties of the iron ore sinter are controlled by the composition and distribution of these mineral phases [1 3]. – Three types of phases, i.e. iron oxides, calcium ferrites …
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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.
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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.
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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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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 limonite and magnetite iron ores. The effect of addition of the iron ore on sintering process was also performed in a ...
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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.
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Then, the effects of iron ore type, aluminum occurrence (free alumina, gibbsite, diaspore, alumogoethite and kaolinite) and alumina content on formation …
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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 deleterious to sinter quality, specially the former. This provides good guidance for the utilization of high-alumina iron ores during sintering.
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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 ...
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desirable bonding phase in iron ore sinter due to its high reducibility and mechanical strength. Alumina has been known to promote the formation of SFCA in the sintering process of iron ore, but it also increases the porosity of sintered ore and viscosity of primary melt, and decreased the physical properties of the sintered ore.
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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.
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Compared with conventional sinter feed, small-sized iron ore concentrate contains a lower alumina. Recently it is more popular to be applied in commercial sinter plants to …
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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 controlled at the same levels of basicity, SiO 2 and MgO, the sintering properties varied with iron ore type greatly. The sinters made from the dense …
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Sinter plants process a mixture of iron ore fines, recycled ironmaking products, slag-forming agents and solid fuel (coke) with the finality of obtaining a product with the suitable ...
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SiO2 and Al2O3 are two important minerals that can affect the mechanical and metallurgical properties of sinter. This investigation systematically studied the influences of these minerals and revealed their functional mechanisms on sinter quality. Results showed that with an increasing Al2O3 content in sinter, the sintering indexes …
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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 …
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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 …
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