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Dolomite 0.21 0.87 31.57 ... and recycled carbon sources for coke breeze in iron ore sintering to address environmental and energy-saving considerations. ... by adding limestone and MgO content in ...
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The main fuel at sintering is coke breeze. The more advantageous method of mixing the sintering ... sinter production are limestone, dolomite and burnt lime and a condition of 90% of grain size below 5 mm. However, ... If the ratio is in favor of iron ore sinter, iron content in resulting
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A metallurgical performance test of the optimal sinter sample demonstrates that the sinter can meet the requirements of small- and medium-sized blast furnace …
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consists of a cellular mass of ore bonded in a slag matrix. The sinter mix, besides the ore fines, usually contains other materials like flue dust, return fines, limestone and/or dolomite etc., in order to control the properties of the product as well as to utilize industrial waste. Return sinter fines having lower fusion temperature than the ...
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The iron ore sintering process is one of the vital steps -in an integrated steelmaking chain, the goal of which is to agglomerate iron ore fines into porous sinters …
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Raw materials like iron ore fines from stock yard as well as beneficiation plant products (washed ore and concentrate), limestone, dolomite, coke breeze, sinter return fines, calcined lime, DRI fines, and micro pellets were used for the laboratory pot grate sintering studies.
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2.1 Materials 2.1.1 Chemical composition. The raw materials used in this study include LZWR, iron ore mixture (IOM), limestone, dolomite, burnt lime, and coke. The chemical composition of raw materials is shown in Table 1.Of these, the LZWR was obtained from the heavy-medium separation (HMS) process of raw lead–zinc ore from …
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The used raw materials, including iron ore 1#, fluxes (i.e., limestone, dolomite, quartz and burnt lime), coke and two types of alumina additives (i.e., washed kaolinite and synthetic hercynite), are all supplied by Chinese steel enterprises. ... MgO and SiO 2 and sinter basicity respectively. Coke possesses a fixed carbon content of as high …
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Characteristic size distributions of materials including coke, limestone and dolomite are used to correct the reaction rates of key sub-models, as well as specific kinetic parameters determined via thermogravimetric analysis instead of empirical values. ... In iron ore sintering, the high-temperature zone is the major resistance to airflow/gas ...
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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 …
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The size distributions of iron ores, fluxes and coke are shown in Fig. 2. The coke breeze and limestone are rela-tively fine while the dolomite is relatively coarse. Ore Y is much coarser than the other iron ores in the blend. The chemical composition of iron ores, fluxes and coke are given in Tables 2and 3. The experimental conditions used
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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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Iron ore 2. Coke 3. Sinter 4. Pellet 5. Limestone/dolomite 6. Nut coke 7. Quartzite 8. Pyroxinite #blastfurnace #iron #ironmaking #SteelMill #Steelplant... Metallurgical engineering · June 22, 2021 · Blast furnace raw materials . …
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The production of 1 ton of iron requires 1.4 tons of ore or other iron bearing material; 0.5 to 0.65 tons of coke; 0.25 tons of limestone or dolomite; and 1.8 to 2 tons of air. Byproducts consist of 0.2 to 0.4 tons of slag, and 2.5 to 3.5 tons of blast furnace gas containing up to 100 pounds (lb) of dust. The molten iron and slag are removed ...
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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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Sintering of High Fe Ore and MgO requirement. The Ore fines had very low content of gangues, SiO 2 and AlO3 being 1.95% and. 1.70%, respectively having Fe 65.20%. The blast furnace requirement for ...
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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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For calcite and dolomite, these impurities are usually manganese or iron [137]. The decomposition temperature of dolomite is lower than that of limestone [138, 139]. Therefore, compared with ...
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Several factors,which significantly affect the sintering process and sinter quality [1] are (1) The chemical composition and size distribution of the raw material; (2) The relative proportion of iron ore, fluxes, coke breeze and sinter return fines in the sinter mix; (3)The size of the granules and their composition and (4)The mineral ...
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The use of sinter influences hot metal production substantially and significantly affects an integrated steel mill's total emissions. Sintering of iron ores is an enormous energy-intensive and resources consuming process. Introducing a selective waste gas recirculation (SWGR) to the sintering process reduces the energy …
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In the blast furnace process, iron-bearing materials (e.g. lumps iron ore, sinter/pellets, mill scale and steelmaking slag), coke (fuel as well as reducer) and flux (limestone and/or dolomite) are charged by the skip car or …
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Iron ore/sinter/pellets, coke and limestone are used as raw materials for blast furnace. Impure liquid iron is produced in a blast furnace from reduction of iron ore by carbon of coke. ... Limestone and dolomite act as fluxing material in blast furnace. It should contain less than 5% insoluble (i.e. ∑SiO 2, Al 2 O 3, Fe 2 O 3). The value of a ...
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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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The sinter is a porous block material formed by the melting and condensation of fine iron ore and flux mixture. In the sintering process, the pore in the sinter is one of …
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Zhao et al. (2014) introduced physicochemical reactions involving coke, limestone, dolomite, and iron ore particles in their model. In fact, due to NG injection technology may increase the sinter ...
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Iron ore Lime Lime-stone Bentonite CB Dolomite SD CH Return fines; Set 1: CB + SD: SE 1: 58.50: 1.14: 4.16: ... The present study was successful in achieving a successful partial substitution of coke for iron ore sintering. The proportion of coke replaced was 10% with SD, 30% with CH, and 30% with the SD-CH blend. ...
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The substitution of anthracite for coke breeze has no influence on the granulation effect of the sintering blend. As the anthracite proportion increased, the sintering speed and productivity ...
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Calcium ferrite could promote the CO–NO reduction reaction, and its formation is affected by iron ores during sintering process. In present study, effects of iron ore coating layers on coke ...
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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. Iron ore fluxed sinter is the main ferrous burden of Jindal south west steel limited (JSWSL) blast furnaces. In sinter plant fluxes including limestone and dolomite are added to improve the sinter ...
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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, …
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