Optimization of FeO in iron ore sinter at JSW steel limited. Ironmak Steelmak (2013) Sun et al. Effect of FeO content in ore on the properties of sinter; ... Mathematical modeling of natural gas injection in iron ore sintering process and corresponding environmental assessment of CO 2 mitigation. Journal of Cleaner Production, Volume 332 ...
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The total reaction involved in the process of sintering is the sum of a number of reactions which involve reactions in heating zone, reactions in sintering zone and reactions in cooling zone. These reactions are illustrated schematically for typical sintering of a limefluxed haematite ore in Fig. 11. Fig. : Development of Minerals during ...
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The abnormal operating mode of the iron ore sintering process will produce sinter ore with low yield and poor quality. It is of high economic value to ensure that the sintering process runs under ...
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Sintering is a thermal agglomeration process that is applied to a mixture of iron ore fines, recycled ironmaking products, fluxes, slagforming agents, and solid fuel (coke). The purpose of the sintering process is manufacturing a product with the suitable characteristics (thermal, mechanical, physical and chemical) to be fed to the blast furnace.
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; JSW Steel Limited, Torangallu, Karnataka. JSW Steel Limited, Torangallu, Karnataka. ... Iron ore fluxed sinter is the main ferrous burden of Jindal south west steel limited (JSWSL) blast furnaces. ... the granulation effectiveness and by the sintering process itself. It is wellknown that in fluxed sinter, the size of limestone ...
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The coke breeze consumption in the JSW Steel Limited sinter plant was high compared to many other sinter plants in the world, and as there was a local shortage, optimisation in the sinter plants was necessary. FeO is an indicator of the thermal state of the sintering process and is employed as a quality control tool at many plants.
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Iron ore sintering is one of the key steps in the ironmaking process, where granulated pellets are transformed into sinter in the sintering machine, providing an ideal raw material for ironmaking blast furnace. Drum granulation in the sintering process plays an essential role in determining the final sintering performance.
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The iron ore in the sintering dust was mainly magnetite, a small amount of hematite and gangue. Moreover, a small amount of quicklime also existed in the sintering dust due to using it as a solvent for the sintering process (Wu et al., 2022b). The peak intensity of metallic iron rose with the temperature, while peaks of magnetite and hematite ...
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The proportioning of iron ore is the first step of the sintering process. It mixes different kinds of iron ores with coke, limestone, dolomite, and returned sinter to produce a raw mix for the ...
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In the iron ore sintering process, the resistance to air flow is a major factor in deciding the flame front speed, which influences the sinter productivity and quality.
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The liquid phase fluidity of iron ore is a vital index of fundamental sintering characteristics. In this paper, FactSage software and a visible microsintering test device were used to research the influence of the thermodynamic melt characteristics on the liquid phase fluidity under fixed CaO content conditions. The results show that the laws governing liquid phase fluidity of iron ore are ...
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Biomass is a renewable and sustainable energy source, and it has now become an increasingly important alternative energy source in the iron ore sintering process [3, 4]. As compared with the usage of conventional solid fuel (coke breeze and anthracite coal) in the sintering process, biomass is carbon neutral and it has lower CO 2, NOx, and SO ...
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The pelletization process is the primary consumer of binders in the iron ore industry. The selection of an appropriate binder type and dosage is of critical importance in producing good quality pellets at a reasonable price. Binders accomplish two very important functions in iron ore pelletization: .
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Granulation and sintering are the two most important steps of the iron ore agglomeration process to produce sintered ore. Since granulation takes place at room temperature and is mainly characterized by physical and interfacial phenomena, while sintering is a thermal densification process involving extensive chemical reactions, the characteristics of the ore blends during these processes are ...
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Sintering facilitates feed of iron ore fines in blast furnace, blended with fluxes and coking coal / coke. The depletion of iron ore quality poses new challenges to steel makers. There is a need to find alternate solutions maintaining optimal composition and metallurgical properties of the sinter to enable the production of highquality hot ...
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Ironrich (65 to 70 pct total Fe) mill scale generated during processing by steel mills can be recycled by using it as a ferrous raw material in the sintering process. The effect of mill scale addition on the phase formation of sintered specimens from an industrial sinter blend containing 0 to 15 wt pct mill scale was examined, and the mineral phases formed during sintering under various ...
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The present work proposes a novel process to sinter porous iron ore (porosity ~2324%) with enhanced productivity and quality. The iron ore is preprocessed in the presence of calcined lime for the temporary closure of pores, which further prevents water absorption during the granulation process in drum in the presence of water. The calcined lime coated iron ore provides surface coating on ...
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Abstract. Iron ore granulation is an indispensable process in the production of sinter that can influence and regulate the yield, efficiency and quality. Although a great deal of research has been done on the granulation process over the past decades, we still need to think about the current and future development of this process, as sinter is ...
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Intensification of the iron ore sintering process was approached by injecting hydrogenrich gas into the sinter bed. The location of the injection was critical to the pyrolysis of the solid fuel, and the SOx and NOx emissions. After installing the injection system in the most appropriate zone, the process intensified, and the emissions were ...
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Sintering process is developed mainly to utilize under size of lump ore called iron ore fines; which otherwise, could not be charged directly in blast furnace. In order to conserve these, otherwise waste material, they are compacted together and made into lumps by a process known as is defined as the agglomeration of the ...
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Iron ore sintering is the iron ore powder agglomeration process that changes fine iron ore powder into the lumpy ironbearing raw material used for blast furnace ironmaking. Hightemperature process and addition of alkaline flux will improve metallurgical performance of ironbearing raw material. Besides, the sintering process will consume the ...
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Iron ore sintering. L. Lu, O. Ishiyama, in Iron Ore, 2015. Conclusions. Sintering is the most economic and widely used agglomeration process to prepare iron ore fines for blast furnace use. Compared with pellets, production of sinter is cheaper, and compared with lump ore, fluxed sinter is often more reducible with better softening ...
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A process for sintering involving iron ore microfines. 7. A process for manufacturing of calcium aluminate cement from secondary steelmaking byproduct. 8. A system for zinc removal from steel plant process waste and upgradation of its Fe values and a process thereof. 9. A process for beneficiation and iron making from lean iron ore fines using ...
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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 'unsuitable for ironmaking' ores.
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The mill scale contains high amounts of Fe and low amounts of silica and alumina. Thus, recycling it through the sintering process helps in the saving of raw materials like iron ore and limestone. This paper presents preliminary findings of a study that investigates the potential for recycling steel mill scale in the sintering process.
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In the iron ore sintering process, the fine size of mm in the sinter base mix is influencing on the sinter mineralogy and sinter properties. The amount of adhering fine particles to nuclei is strongly influenced by moisture available for granulation. ... JSW Steel has setup Asia's largest beneficiation plant with a designed capacity of ...
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Sinter plants agglomerate iron ore fines (dust) with other fine materials at high temperature, to create a product that can be used in a blast final product, a sinter, is a small, irregular nodule of iron mixed with small amounts of other minerals. The process, called sintering, causes the constituent materials to fuse to make a single porous mass with little change in the chemical ...
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Adding mill scale as an ingredient into the iron ore sintering or pelletizing process is the main utilization approach for mill scale because of its high iron content and positional advantages [10 ...
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A systematic analysis of industrial iron ore sinter product and associated sinter returns was undertaken. The samples were characterised through identification of the major macro and microstructural types present in these materials. Examination of the breakage surfaces of the particles indicates a strong correlation between mechanical sinter strength and sinter microstructure. Preferential ...
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The iron ore fines (− 10 mm) are agglomerated using Dwight Lloyed sintering machine. The iron ore fines and coke breeze fines mix with moisture is fed on the sinter bed which is ignited by a gas burner to initiate sintering process. The hot sintered ore is discharged at the end of the machine. The energy consumption in sinter plants in the ...
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Moreover, the conventional iron making unit, blast furnace requires the raw material in the form of iron oxide with a size range of 10120 mm. Sintering is the oldest agglomerate thermal process using iron ore mineral fines of mm, along with the reductant, fluxes, and other byproducts of the iron and steel industry operated ...
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Sinter quality begins with the mined iron ore and the proper selection and mixing of the raw materials. Inhomogeneous raw mix can affect permeability and cause an increase in fuel consumption. During the iron ore sintering process in iron and steel manufacturing, an online analyzer can be used to determine the elemental composition of the bulk ...
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Lump iron ore, fluxed/superfluxed sinter and acid/basic pellets are the major iron bearing materials. Because of high SiO 2 and Al 2 O 3 content in iron bearing materials, limestone and dolomite as fluxes are added in sintering process to promote the formation of low melting slag which helps in achieving the desired sinter properties.
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