The sinter is produced in the sinter plant by agglomeration of the charge which consists of iron ore fines, fluxes and fine-grained recycled iron-containing materials such as dusts, sludge and scale. Due to the high volume of off-gas from the sintering process, sinter plants are responsible for a significant proportion of the atmospheric ...
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Following these pioneers, a substantial number of models have been put forward for iron ore sintering (Cumming and ... Young et al, 1979), and travelling grate machine (Drugge, 1979, 1981, Breitholtz and Hillberg, 1980, Thurlby, 1979). Several authors have also simulated pellet induration in pot grate (Kucukada et al., 1994, Seshadri and da ...
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During the iron ore sintering process in iron and steel manufacturing, ... The raw materials are sometimes mixed with water to provide a cohesive matrix, and then placed on a continuous, travelling …
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Sintering is the most economic and widely used agglomeration process to prepare iron ore fines for blast furnace use. Owing to the depleting reserves of traditional high grade iron ore, there have been considerable changes in iron ore resources available throughout the world, especially in steel mills in East Asia.
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DOI: 10.1016/jpchemeng.2015.04.035 Corpus ID: 31017940; Predictive models and operation guidance system for iron ore pellet induration in traveling grate-rotary kiln process @article{Fan2015PredictiveMA, title={Predictive models and operation guidance system for iron ore pellet induration in traveling grate-rotary kiln process}, …
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product, commonly known as sinter, is the major feed to Blast Furnace to produce hot metal. The hot metal is fur-ther refined in a convertor to produce steel. In the iron ore sintering process, sinter mix consisting of the fines of iron ore, limestone, dolomite and solid fuel is mixed with water, granulated and charged on a traveling grate.
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The thermal state of iron ore pellets during traveling-grate processes is complex, and sintering is a complex coupling process involving multiple physical factors.
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The sinter pot has a grate area of 0.075 m 2 and a variable depth ranging from 0.5 to ... it takes time for water to travel through particles to reach the surface of ore particles and through particle porosity to reach the inner pores of ore particles. ... Iron ore sinter typically constitutes more than 70% of the blast furnace ferrous burden ...
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HYBRID PELLETIZED SINTERING. HPS is characterized by micro pellets with high mechanical strength, measuring between 2 mm and 8 mm. HPS feed consists of iron …
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Iron ore sinter is an ordinarily utilized iron-bearing burden in BF iron-making unit. The sintering agglomeration procedure aims to form high strength sinter including granulating of the mixed materials, distributing the granulated materials and then igniting the fuels (coke or coal), sintering the iron-bearing materials by the combustion of fuel in a …
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The thermal state of iron ore pellets during traveling-grate processes is complex, and sintering is a complex coupling process involving multiple physical factors.
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sintering, the welding together of small particles of metal by applying heat below the melting point.The process may be used in steel manufacturing—to form complex shapes, to produce alloys, or to work in metals with very high melting points.In a steel-sintering plant a bed of powdered iron ore, mixed with coke or anthracite, is ignited by a gas burner and …
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The process for pelletizing iron ore fines is an important operation unit for producing high quality of raw materials for the subsequent reduction processes such as blast furnace or direct reduction. The process essentially involves production of green pellets and induration on a traveling grate furnace to promote inner partial melt and ...
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FeO so formed combines with SiO 2 and fluxes resulting in the formation of fluxed sinter.. The flexibility of the sintering process permits conversion of a variety of materials, including iron ore fines, captured dusts, ore concentrates, and other iron-bearing materials of small particle size (e.g., mill scale) into a clinker-like agglomerate.
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In iron making process, sintering of iron ore fines is an integral step to utilize not only the ore fines but also to introduce a part of flux (limestone and dolomite) along with the sinter in blast furnace burden. ... At the Institute (CSIR-IMMT}, a sintering pot grate furnace facility of 400 × 400 × 730 mm size, with a suction blower having ...
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Magnetite iron ore pellets are produced by agglomerating moist, finely ground magnetite concentrate together with a binder in balling drums or balling discs to pellets, typically between 9 and 15 mm in diameter. In the Grate Kiln pelletizing process, the wet green pellets are loaded on a travelling grate with a bed height of 23 cm.
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Ensure your plant's high performance and profitability while lowering investment and operating costs with our agglomeration technologies. Our innovative sintering and pelletizing solutions are based on over 60 years' experience and world-class R&D. Traveling Grate Sintering is suitable for sintering a wide range of raw materials, …
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Fig 2 Flowsheet of straight travelling grate process. ... Normally pellets are reduced considerably faster than sinter as well as iron ore lumps. High porosity also helps in better metallization in DRI production. Pellets have a …
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For the pelletizing of iron ore there are two main types of processes namely, the straight travelling grate (STG) process and the grate kiln (GK) process. In the STG process, a stationary bed of pellets is transported on an endless travelling grate through the drying, oxidation, sintering and cooling zones.
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A model of the iron ore sintering process has been developed with the objective of being representative of the sinter pot test, the standard laboratory process in which the behaviour of specific ...
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The iron ore production has significantly expanded in recent years, owing to increasing steel demands in developing countries. However, the content of iron in ore deposits has deteriorated and low-grade iron …
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The thermal state of iron ore pellets during traveling-grate processes is complex, and sintering is a complex coupling process involving multiple physical factors.
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Traveling grate is a widely used process for iron ore pellet production; however, the thermal state of pellets in drying section is still unclear. In this study, the temperature distribution of drying section was investigated using computational fluid dynamics (CFD). Based on the calculated results of airflow velocity, space temperature …
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Satyendra. Sintering and palletization are two different processes of agglomeration. Major advantages of sintering process are (i) Sintering uses as mined iron ore fines which can be used as such …
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Basic sintering technology . The sintering technology is basically an agglomeration process for the iron ore fines which is dependent on heat to melt the surface of the smaller particles together to form larger agglomerates. A typical sinter plant consists of a number of sequential operating units with the sinter machine at the heart of the plant.
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World resources are estimated to be greater than 800 billion tons of crude ore containing more than 230 billion tons of iron. The only source of primary iron is iron ore, but before all that iron ore can be turned into steel, it must go through the sintering process. Sinter is the primary feed material for making iron and steel in a blast furnace.
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Iron Ore Sintering Bed ... coke and limestone form a bed on a traveling grate as shown in Fig. 1(a). Air is supplied to the bed by a down draft suction fan. The combustion commences at the top
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A mathematical model of drying and preheating processes in a traveling grate was presented based on the laws of mass, momentum, heat transfer, and drying semiempirical relations. A field test was systematically carried out in a traveling grate. The effects of pellet diameter, moisture, grate velocity, and inlet gas temperature on the …
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Both straight-grate and grate-kiln furnaces have been accepted in the iron ore industry. Both are considered to be roughly equal when comparing overall costs and expenses versus the final product ...
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