تعتبر شركة Olux شركة رائدة ومتميزة على المستوى الدولي في مجال البحث والتطوير وتصنيع وبيع محطات التكسير والغربلة واسعة النطاق ومعدات الطحن الصناعية ومصانع الاستفادة.
D. Coke, lime stone, dolomite and iron ore particles have characteristic size distributions; in a sinter mix the lay- ering of fines onto the surfaces of larger particles pro-
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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 …
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Iron ore fine limestone, dolomite, coke breeze, sinter return fines and calcined lime collected from the sinter plant stock yard had different moisture contents, and so they were dried in a hot oven at 150°C for 3 h. ... The negative influence of FeO on the reducibility of iron ore sinter was believed to be a result of the decrease in ...
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A. Iron ore sintering is considered a 1-D transient pro-cess; the lateral transfer of heat and mass across the bed being negligible B. The continuum of the gas (O2, CO2, CO, H2O and N2) and solid (coke, limestone, lime, dolomite, mag-nesia, water, hematite and magnetite) phases; with the gases flowing through a stationary bed of solids
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In this investigation, iron ore blend (iron concentrates, iron ore fines, and some iron-bearing dust), fluxes (limestone, burnt lime, and dolomite), coke breeze, and return fines (sinter < 5 mm ...
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Beneficiated iron ore, coke, limestone and dolomite is then fed on top of the blast furnace. Hot air is then injected through the nozzles that are at the base of the furnace. This results in iron ore and sinter melting and collecting at the bottom of the furnace as a molten pool. It is the carbon and carbon monoxide in coke that helps in ...
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Iron ore sinter constitutes more than 70% of the BF ferrous feed, Sintering normally uses iron-ore fines, fluxes (limestone, dolomite), return fines, coke breeze and metallurgical waste as raw ...
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Iron ore sintering having two-layers, with normal coke rate in the top layer and lower coke rate in the bottom layer can significantly reduce the overall coke rate and improve the sinter quality ...
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In sinter plant fluxes including limestone and dolomite are added to improve the sinter properties of iron ore and to provide an appropriate slag composition of the blast furnace.
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process the raw materials like limestone, dolomite, coke, iron ore fines and metallurgical wastes are converted into a solid mass i.e., pellets by using the heat produced by the incipient fusion during the combustion process. This is an important process for ... Later the iron ore pellets goes with the sinter screeners for screening process ...
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It was observed that the iron ore sample contains 59.75% Fe, 4.52% SiO 2, 3.84% Al 2 O 3, and higher content of LOI 4.85%.The LOI distribution for the iron ore fine is listed in Table 2 indicating the weight loss% due to goethite at 400 °C; kaolinite at 850 °C and carbonate minerals at 950 °C. The heating cycle indicates that maximum weight loss (~65%) occurs at …
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The coke, dolomite, and limestone for TG (thermogravimetry) tests are from the sintering plant of the Baoshan Iron and Steel Co., Ltd. in China. The ultimate and proximate analyses of the coke are performed according to the Chinese national standard procedures (Ultimate analysis GB/T: 213–2003 and Proximate analysis GB/T: 212–2001), as ...
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iron ore fines as sinter feed.Burnt lime was used along with the waste material as binder and to partly as replacement of lime stone. The raw materials used for sintering are iron ore (-8mm), coke breeze (-3mm), lime stone, dolomite (-3mm), lime and gas cleaning plant (GCP) sludge, dust catcher plant dust. Initially
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With the addition of iron ore, limestone, and dolomite, the maximum emission concentrations of CO decreased to 208.75 mg/m 3, 200 mg/m 3, and 190 mg/m 3, and the …
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Owing to the depletion of high-grade iron ore quality, many steel plants over the world are now using pellets after beneficiation of low grade ores as blast furnace feed. For the effective utilization of low-grade iron ore resources (59–62% Fe) with high loss of ignition (LOI), mineralogical characteristics play the vital role to improve the process efficiency.
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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 …
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It describes how iron ore fines, limestone, dolomite and other raw materials are blended and formed into nodules. These nodules are then processed through a sintering machine, where combustion of coke forms sintered agglomerates. The sinter is cooled, crushed, and screened before use as a raw material input for blast furnaces. Key aspects of ...
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reduction while ensuring the quality of sintered ore. 2. Experimental Method 2.1. Raw Materials The chemical compositions of iron ore fines and fluxes used in the sintering experiments are shown in Table 1. Iron ore fines include PB, Yandi, Kooly, Carajas, and Sijiaying, fluxes include dolomite, quicklime, and limestone, and the
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Bunker 1 : Metallurgical Waste Bunker 9&10 : Coke- Breeze Bunker 2 : Quartzite Bunker 11&12 : Lime Dust Bunker 3-6 : Iron Ore Fines Bunker 7 : Lime stone Bunker 8 : Dolomite Sinter Machine Building(S.M.B) • This is a section which deals with sinter preparation. • There are total of 8 bunkers in S.M.P.P. in which raw materials are stored.
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In general, the main types of pellets for the purposes of making iron are acid, basic and fluxed. In order to produce high-quality pellets, certain additives are important. The most common fluxing materials for iron ore pellet production are limestone (CaCO 3), dolomite (Ca,Mg(CO 3) 2) and olivine (Mg 2 SiO 4), but sometimes magnesite (MgCO 3 ...
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crucible-like hearth. Iron-bearing materials (iron ore, sinter, pellets etc.), coke and flux (limestone and dolomite) are charged into the top of the shaft. A blast of heated air and also, in most instances, a gaseous, liquid or powdered fuel are introduced through openings at the bottom of the shaft just above the hearth crucible.
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required to produce 0.9 Mg (1 ton) of product sinter. 12.5.1.2 Iron Production - Iron is produced in blast furnaces by the reduction of iron bearing materials with a hot gas. The large, refractory lined furnace is charged through its top with iron as ore, pellets, and/or sinter; flux as limestone, dolomite, and sinter; and coke for fuel.
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Sintering is a process in which iron ore fines along with limestone, dolomite, coke fines, quicklime GCP dust, flue dust, mill scale and return sinter are mixed with water to form nodules and then fired to form sinter.1) Mix of these materials is then charged into pallet cars, where an ignition
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Five kinds of iron ore, return ore, limestone, dolomite, coke and quick lime were used in the experiment. All components are divided by rotary screen to ensure uniformity …
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The major advantages of using sinter in BFs are : Use of iron ore fines, coke breeze, metallurgical wastes, lime, dolomite for hot metal production ... The raw materials used are as follows - Iron ore fines (-10 mm), coke breeze (-3 mm), Lime stone & dolomite fines (-3mm) and other metallurgical wastes. The proportioned raw materials are mixed ...
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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 (flux), solid fuel (coke breeze or anthracite) and metallurgical wastes (collected dusts, sludge and mill scale etc).
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Iron ore fines Lime Stone Dolomite Coke fines Mill scale Flue dust. Internal Return fines. 22 ... Specific Consumption of raw materials per unit ton of sinter. Iron ore fines Lime stone(HS) Lime stone(LS) Lime LD slag Mill scale Flue …
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30 PRINCIPAL STEPS OF IRON ORE SINTERING TECHNOLOGY TThe iron ore fines, lime stone fines, dolomite fines, lime dust, metallurgical wastes and coke breeze are proportioned based on charge …
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Generally before sintering a charge-mix is prepared that consists of iron ore fines, fluxes (limestone and/or dolomite), fuel (coke breeze), sinter return-fines, and sometimes some waste-recycling plant materials. Therefore, efficiency of producing good quality sinter depends on many characteristics of the charge mix.
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Iron ore sintering is the iron ore powder agglomeration process that changes fine iron ore powder into the lumpy iron-bearing raw material used for blast furnace ironmaking. ... (rich ore powder, concentrate powder), flux (limestone, dolomite, quicklime, etc.), fuel (coke powder and anthracite), additives (roll scale and some recycled materials ...
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Additionally, the dolomite and the limestone as common basic fluxes in the sintering process can improve the metallurgical properties and reducibility of the sintered ore. Therefore, …
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By this sintering process the raw materials like limestone, dolomite, coke, iron ore fines and metallurgical wastes are converted into a solid mass i.e., pellets by using the heat produced by …
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The main iron ore sintering sub-models include the pressure drop in porous media [64, 66–77], heat transfer in porous media [64, 66–80], ... rates in the relevant sub-models were corrected by characterizing the size distributions of materials including coke, limestone, and dolomite, ...
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Based on the above issues, anthracite has become the main substituting fuel for coke breeze in iron ore sintering due to its reasonable price 19,20.When this substitution is made, the particle ...
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Utilization of Pellet Fines in the Iron Ore 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
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Energy Resources, Its Role and Use in Metallurgical Industries. R.C. Gupta, in Treatise on Process Metallurgy: Industrial Processes, 2014 4.2.3.1.3.2 Sinter Making. 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 …
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