Experimental Materials. As shown in Group 1 of Table 1, the experimental raw materials were from a steel sintering workshop in Tangshan, the basicity of the sintering mixture was, the content of MgO was %, the Al 2 O 3 content was %, and more than 80% the fuel particle size is larger than 3 mm.
The process of sintering is basically a pretreatment process step during iron making for the production of the charge material called sinter for the blast furnace from iron ore fines and also from metallurgical wastes (collected dusts, sludge and mill scale etc.). The sintering technology was originally developed for the purpose of utilizing ...
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. Experiments were conducted using the mill scale in sinter making from 0 to 70 kg/t of sinter.
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. 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. Due to ...
Summary. In this chapter, we learned that three main ferrous burden materials are used in BF operation; lump ore, sinter, and pellets. The types of iron ores used to produce these three ferrous charge materials and the related production methods were described. The various analysis methods used to determine the quality of the BF charge ...
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.
The evaluation model of iron ore properties was established based on the high temperature characteristic numbers with employing fuzzy mathematics. Then, with the constraint of sinter properties and the raw materials, the ore blending model was built, whose target was to obtain the lowest cost and the best sinter properties.
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.
According to the Environmental Protection Agency, the sintering process converts finesized raw materials, including iron ore, coke breeze, limestone, mill scale, and flue dust, into an agglomerated product, sinter, of suitable size for charging into the blast furnace.
Limonite (brown iron ore) used as a raw material for sintering is inexpensive, but problems include the fact that this ore combines strongly with water and has a coarse particle size. These properties have a serious impact on productivity in the sintering process (Lu and Ishiyama 2016). By solving these problems, this device makes it possible ...
The CaO and MgO slag components do not coexist with iron ores and are added separately; therefore, CaO (such as limestone) and MgO (such as serpentine or dolomite) are mixed with iron ore fines as the sinter raw mix for the sintering process. The ultrafine iron ore reacts with the fluxes and forms a bonding matrix (silicoferrite of calcium and ...
Iron ore sintering was a hightemperature process that preparing lump burden for further ironmaking. During this process, iron ore fines, recycled ironbearing materials, fluxes, and solid fuel including coke breeze, anthracite, etc., were thoroughly mixed and then agglomerated into finished sinter under 1300 °C provided by the combustion of ...
The iron ore sintering process is the process of mixing powdered iron ore, fuels, fluxes and recycling materials for the sintering process according to certain composition, mixing with water and igniting to sinter the raw materials into blocks in an incomplete melting state.
Sinter is the primary feed material for making iron in a blast furnace. Sinter is created by mixing iron ore concentrate with several additives such as limestone and silica to control the chemistry and then igniting it at 1200°C in a continuous beltfed furnace. Sinter feed composition control is important because the various sinter feed ...
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 ...
2 Citations Abstract The raw materials for an integrated steelworks can be classified into four categories, which are iron ores, fluxes, fuels, and reverts. The characteristics of these raw materials strongly affect the metallurgical properties of iron ore sinter and sinter plant performance.
References (69) ... 6,7) Iron ore sintering is an agglomeration process of a mixture of ore fines mainly consisting of iron ores, fluxes and fuel, which produces sinters with suitable chemical and ...
I. RuizBustinza of Mining and Energy Engineers (UPM) J. Mochón Carmen GonzálezGasca European University of Madrid Abstract and Figures Sintering is an agglomeration process that fuses...
The ironore sintering process contributes up to 10% of the overall CO 2 emissions in the integrated steel plant. ... Composite pelletsa potential raw material for ironmaking. Steel Res. Int., 85 (3) (2014), pp. 293306. CrossRef View in Scopus Google Scholar. Ariyama et al., 2005.
Mineralization testing process included ore matching, agglomeration, roasting and mineralogical analysis. Iron ores and fluxes (dolomite, limestone, and quicklime) were mixed to a feed, which then was used to produce sinter with SiO 2 %, basicity (CaO/SiO 2) and MgO %, the proportions of each material were shown in Table principle of ore matching for adhesion layer was ...
I. RuizBustinza of Mining and Energy Engineers (UPM) J. Mochón Carmen GonzálezGasca European University of Madrid Abstract and Figures Sintering is a thermal agglomeration process that...
ABSTRACT. Sintering is an agglomeration process that fuses iron ore fines, fluxes, recycled products, slagforming elements and coke. The purpose of sintering is to obtain a product with suitable composition, quality and granulometry to be used as burden material in the blast furnace.
This chapter focuses on the application of the sintering process as an important raw material preparation step for the production of hot metal in blast furnaces in integrated steel mills, which account for about 70% of the world's steel production annually. Sintering process for iron ore fines
The chemical compositions of raw material for minisintering are summarized in ... as well as the platesheettype. The corrosion structure of magnetite and the columnaraciculartype is the best microstructure with the highest strength. ... and Melting characteristics of iron ore fine during sintering process, J. Iron Steel ...
The effect of the substitution of conventional coke breeze fuel used in sintering on final sinter quality and emission was examined. With regard to productivity, fuel consumption, and properties ...
Sinter is the main ironcontaining raw material for blast furnaces. As iron ore resources are gradually depleted, the types of raw materials for sinter are complicated, so their chemical composition often changes. ... Importance of textural information in mathematical modelling of iron ore fines sintering performance. Miner Process Extr Metall ...
Material Selection for Sintering Process Raw materials like iron ore nes, limestone, dolomite, coke breeze, blast furnace return nes, sinter return nes, micro pellets, coke breeze, and calcined lime were used for the laboratory pot grate sintering studies. A total of 5 pot trials were planned to vary the pellet nes from 0 to 50% in the
This chapter focuses on the application of the sintering process as an important raw material preparation step for the production of hot metal in blast furnaces in integrated steel mills, which accounts for about 70% of world steel production annually.
To reduce the raw material cost of the blast furnace ironmaking system and realize the collaborative optimization of the whole process from iron ore procurement to blast furnace ironmaking, He et al. [15] developed a whole system and whole process optimized sintering batching platform for blast furnace ironmaking.
The inhibition effect of calcined lime (CaO) and limestone (CaCO3) on the formation of dioxins during iron ore cosintering with fly ash was investigated in a sinter pot in the present work. Experimental results indicated that international total toxicity equivalent concentration of dioxins decreased from to,,, and ng ITEQ Nm−3 under four different ...
Sintering raw materials include iron ore powder (rich ore powder, concentrate powder), flux (limestone, dolomite, quicklime, etc.), fuel (coke powder and anthracite), additives (roll scale and some recycled materials), return ore in sintering process, and return ore below ironmaking trough. Process Flow
The typical iron ore sintering process supplies the main ferrous charge for blast furnaces in most steel mills. During sintering, first the sinter raw materials are intimately mixed and granulated to produce granules with a narrow size distribution, large mean size and sufficient strength. ... while sinter is the best candidate material for ...
She, J.; Wang, C. An intelligent integrated optimization system for the proportioning of iron ore in a sintering process. J. Process Control. 2014, 24, 182202. [Google Scholar] Ramos, ; Kasai, E. Numerical Simulation Model of the Iron Ore Sintering Process Directly Describing the Agglomeration Phenomenon of Granules in the Packed Bed.
The quality control process for sintered ore is cumbersome and time and moneyconsuming. When the assay results come out and the ratios are found to be faulty, the ratios cannot be changed in time, which will produce sintered ore of substandard quality, resulting in a waste of resources and environmental pollution. For the problem of lagging sinter detection results, Long ShortTerm Memory ...
Blast furnace ironmaking has the advantages of a good economic index, simple process, large output, and high production efficiency, which represents the major hot metalmaking process in the world [1,2].With the largescale development of modern blast furnaces, iron ore resources are becoming increasingly scarce, which makes the raw material structure of sintering plants fluctuate greatly, and ...
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