The coke combustion rate in an iron ore sintering process is one of the most important determining factors of quality and productivity. Biomass carbon material is considered to be a coke substitute with a lower CO2 emission in the sintering process. The purpose of this study was to investigate the combustion rate of a biomass carbon material and to use a sintering simulation model to calculate ...
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Sintering of iron ores is an enormous energyintensive and resources consuming process. Introducing a selective waste gas recirculation (SWGR) to the sintering process reduces the energy consumption, stack gas volume flow, and sulfur dioxide emissions of an iron sinter production. Simulating this complex process in flowsheet simulations of ...
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Hydrogenrich gas and steam are widely regarded to be of great potential to mitigate CO 2 emissions in iron ore sintering, these gases can regulate heat distribution in the sintering machines by replacing fossil fuels. However, most sintering machines only use one of the gases as the injecting medium, the potential of this technology has not been developed.
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Among the machine learning techniques, the [2] Mróz Jan, Skowronek Ryszard and Francik Przemysław, Random Forest model prediction algorithm was found to Investigations on the Influence of Return Sinter Fines on the Iron Ores Sintering Process and on the Properties of Iron Ore have a good fit with actual values.
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Sintering is the most extensively used and economic agglomeration process to prepare iron ore fines for blast furnace use. Granulation is the most critical factor controlling iron ore sintering process, as it improves sinter mix permeability. Currently, sinter plants are receiving significant proportion (up to 40%) of − 150 μm microfines in iron ore fines, which makes sintering difficult ...
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Iron ore sintering is an agglomeration process, whose product, commonly known as sinter, is the major feed to Blast Furnace to produce hot metal. The hot metal is further refined in a convertor to produce steel. ... the combustion zone travels down and the temperature of the waste gas below the Sinter Machine gradually rises. The solid fuel ...
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1 Introduction The sinter mix contains various materials such as iron ore, flux, solid fuel, plant return sinter fines, plant generated wastes, etc., where the majority of it is iron ore.
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Sinter is the primary feed material for making iron in a blast furnace. 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.
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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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Factors affecting dioxin emissions from iron ore sintering machines have been investigated by means of sinter pot tests (Nakano et al., 2009). The bed height, coke content, gas velocity, and afterburner were found to have insignificant effects. However, dioxin emissions were found to increase as the hearth layer increased and the distance of ...
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materials used in sintering are Iron ore fines, Coke breeze, Limestone, Dolomite, Sand, Metallurgical waste and Lime. Physical properties: Iron ore fines used for sintering should be of the size of 010 mm. More of ñ1 mm fraction will reduce bed permeability and will reduce the vertical speed of sintering reducing machine productivity.
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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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Superhigh bed sintering process is an important development direction of iron ore sintering for its lower emission and higher yield. However, there is a lack of deep understanding of the uneven quality of superhigh bed sintering products, and the deterioration of reduction disintegration performance, the thickening of hearth layer and the reduction in energysaving effect are perplexing ...
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The iron and steel industry has made an important contribution to China's economic development, and sinter accounts for 7080% of the blast furnace feed charge. However, the average grade of domestic iron ore is low, and imported iron ore is easily affected by transportation and price. The intelligent ore blending model with an intelligent algorithm as the core is studied.
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The industrial test results of 360 m 2 sintering machine in No. 2 sintering workshop and the No. 4 and No. 5 blast furnaces of Ironmaking Plant of Angang Steel Co. Ltd for nearly 7 months show that the new double layer presintering process is completely feasible in production practice, and % of the sintering output has been achieved. The ...
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Pellet bed heights up to 550 mm can be realized. The CSP Sinter Car for sintering is used to airsweep ore fines and sintering concentrates through the charge layer during sintering belt movement. The car consists of a split or onepiece cast steel body, steel sealing plates, and lattice grate. Use of the seal assembly on the roller adds ...
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sintering, the welding together of small particles of metal by applying heat below the melting process may be used in steel manufacturing—to form complex shapes, to produce alloys, or to work in metals with very high melting a steelsintering plant a bed of powdered iron ore, mixed with coke or anthracite, is ignited by a gas burner and then moved along a traveling grate.
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Amongst various processes used in agglomeration, sintering and pelletization are widely used in the iron ore industries. About 70% of the blast furnace feed is reporting from the sintering processes. The objective of iron ore agglomeration is to generate a suitable product of granules in terms of thermal, mechanical, physical, and chemical ...
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The iron ore sintering process results in significant VOC emissions owing to the mixed combustion of fossil fuels, iron ore, and coke . Especially in typical iron and steelproducing cities such as Tangshan and Handan, iron ore sintering processes account for % of the national VOC emissions [11,12]. In response to the large VOC ...
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Sintering combines iron ore fines in the size range .1510 mm along with fluxes, solid fuel and various steel plant reverts to form iron ore sinter in the size range of 540 mm that can be charged into the blast furnace for production of pig iron. The quality of sinter has a strong influence on the productivity and fuel rate of the blast furnace.
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