The roles of iron ore, fuel, fluxes, and moisture in sintering granulation are also analyzed, and finally advanced ... Iron ore granulation has been introduced into the steel production process since iron ore agglomeration was proven to have better metallurgical properties and more efficient iron ... Iron ore sintering is being restricted due ...
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Meanwhile, an iron ore sinter is a crucial material for the ironmaking process, and its chemical, physical, and metallurgical properties significantly impact the blast furnace (BF) performance. 9 In turn, the main materials used for a sinter are iron ore fines, and their chemical compositions play a critical role in the sintering process.
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The sintering process is used to agglomerate a mix of iron ore fines, return fines, fluxes, and coke, with a particle size of less than 10 mm, so that the resulting sinter, with a screened size of 5 mm to 30 mm, can withstand pressure and temperature conditions in the blast furnace (BF). The process of sintering of iron ore fines was primarily ...
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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).
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One important step of the iron ore sintering process is the raw materials preparation, which means that these materials need to be mixed and subsequently granulated. Recently, due to the increase of fine portion of the sinter feeds and also the availability of concentrates, such as pellet feeds, this step played an important role to guarantee ...
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During sintering, water plays a key role, as a binder to granulate the iron ore mix. It permeates through ore particles under the influence of capillary force and reaches the surface and then migrates further into ore particles [ 6 ].
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The roles of iron ore, fuel, fluxes, and moisture in sintering granulation are also analyzed, and finally advanced granulation equipment and processes for industrial production, as well...
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The sintering process can be defined as a thermal agglomeration process that is applied to a mixture of iron ore fines, recycled ironmaking products, fluxes, slagforming agents, and solid fuel (coke) with the objective of obtaining a product with the suitable characteristics (thermal, mechanical, physical, and chemical) to be fed to the blast furnace.
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Feng et al. [44,45] studied the waste heat recovery and gas flow in vertical tank for sinter. Zhou et al. [46] studied the influence of sintering parameters of different sintering layers on NOx emission in iron ore sintering process. Zhou et al. [47] and Tian et al. [48] studied the waste heat recovery and heat exchange problems.
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Abstract and Figures. Sinter plants process a mixture of iron ore fines, recycled ironmaking products, slagforming agents and solid fuel (coke) with the finality of obtaining a product with the ...
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The basic hightemperature properties of iron ore play a crucial role in optimizing sintering and ore blending, but the testing process for these properties is complex and has significant lag time, which cannot meet the actual needs of ore blending. A prediction model for the basic hightemperature properties of iron ore fines was thus proposed based on a combination of machine learning ...
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Textural classification allows mines to better predict where different types of goethite are present, allowing blending processes to be adjusted to address differences between ore types. Sintering. Fine (1mm) goethite is very reactive during the sintering process and can be leveraged to enhance melting and matrix strength.
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A study was carried out into the use of charcoal as a supplementary fuel in the ironore sintering process. The primary fuel was coke breeze and anthracite with 0, 10, 25, 50 and replacement of the energy input with charcoal to produce sinter. This was achieved by considering the carbon content of each fuel and its corresponding participation on fuel blending, in order to have the same ...
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moisture and 10 to 14 mm in size are then fed onto this layer and travel together with the sublayer through ... a substantial number of models have been put forward for iron ore sintering (Cumming and Thurlby, 1990, Young, 1977), ... changes involved. One phenomenon that is generally overlooked, yet plays a significant role in the process
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Fine Mosaic Embedding Iron Ore Sintering) process, in which return fine as dry particle is added on granulated raw materials and then they are charged into sintering machine, is proposed. In RFMEBIOS, it is demonstrated by pot tests that productivity increases at the same moisture content in sinter mixture at charging.
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Therefore, the carbon and Cl content of the raw materials used for iron ore sintering are important to the formation of dioxins. This is supported by Kawaguchi et al. (2002c), who reported that the properties and contents of the solid fuels and chlorides in the raw mixture significantly affect dioxin emissions during the iron ore sintering process.
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Sintering process for iron ore fines 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.
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Sintering or frittage is the process of compacting and forming a solid mass of material by pressure [1] or heat [2] without melting it to the point of liquefaction. Sintering happens as part of a manufacturing process used with metals, ceramics, plastics, and other materials. The nanoparticles in the sintered material diffuse across the ...
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Sintering performance in the pelletsintering process was significantly improved with tumble index and productivity increasing by % and %, respectively, and solid fuel rate lowered by 33 ...
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During sintering, water plays a key role, as a binder to granulate the iron ore mix. It permeates through ore particles under the influence of capillary force and reaches the surface and then migrates further into ore particles [6].
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Results from this study showed that moisture of iron ores can decrease PCB emissions during the sintering process. The fine particles of iron ores favour slag bonding in the sintering process 44 .
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Granulation is an important process in iron ore sintering. During this process, iron ore, coke, flux, and other raw materials are fed into the drum and mixed with water addition. The fine granular materials bond with each other under the action of capillary force and gradually grow with a certain size distribution.
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