2024101· In this study, the reduction processes of hematite pellets with different iron grades reduced by a reducing atmosphere (70% N 2 –30% (H 2 /CO = 0/2/5)) at 1123, 1173, and 1273 K were systematically investigated using a thermal analyzer. Kinetic analysis of hematite pellets was performed using the Avrami–Erofeev kinetic model.
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2025716· 1. Introduction With the urgent need of the steel industry for low-carbon and high-efficiency metallurgical technology, the direct reduction process of iron ore pellets has become a key link in research and industrial practice. As an important raw material for blast furnaces and direct reduction devices, the reduction behavior of pellets is affected by multiple …
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2024101· This article introduces DR technology from the perspective of product applications, the global status of DRI production, and prospects for DRI development. It then analyzes the challenges presented by DR development in China, including energy options, raw materials preparation, and DR process optimization.
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20141126· The energy consumption needed for the pellet production from hematite ore fines is greater than that needed for pelletizing the magnetite ore fines. Moreover, pellets made from hematite ores have poor roasting properties and do not achieve adequate physical strength until the roasting temperature is higher than 1300 deg C.
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2024125· Abstract China''s significant reliance on imported iron ore is due to its poor resource endowment and low utilisation levels. Given the urgent demand for iron ore resources, it is crucial to conduct basic research and cutting-edge technology exploration around co-associated refractory iron ore to realise the efficient utilisation of these resources.
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2024101· This article introduces DR technology from the perspective of product applications, the global status of DRI production, and prospects for DRI development. It then analyzes the challenges presented by DR development in China, including energy options, raw materials preparation, and DR process optimization.
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20241210· Iron ore pellets are one of the main feedstocks for ironmaking. They have high iron content, great compressive strength, uniform size, and superior reducibility. In recent years, the production of iron ore pellets has experienced rapid growth in China [1]. The main raw materials used for the production are iron concentrates, mainly magnetite concentrate and …
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20· To eliminate the adverse effect of incompletely mineralized magnesium additive on pellets strength, clarify the interaction between additives and iron ore during the induration process, two types of interaction couples were prepared and scanning electron microscopy-Energy dispersive spectrometer was used to study the diffusion of elements and phase …
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1.2.2.2 Agglomeration of Iron Ore The three major forms of iron used in ironmaking are pellets, lump, and sinter. The major change in the past 50 years has been the development of cost-effective pelletization technology allowing pellets to be a major source of iron oxide for ironmaking processes. From 1965 to 1985, the percentage of iron feed composed of pellets increased …
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The hematite with iron black, metallic luster and flake is called boundary iron ore. Steel-gray, metallic luster, scaly called mica hematite, ancient Chinese called "Yunzi iron"; Reddish brown earth and dull luster called ochre, ancient Chinese called "ochre", and …
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20· To eliminate the adverse effect of incompletely mineralized magnesium additive on pellets strength, clarify the interaction between additives and iron ore during the induration process, two types of interaction couples were prepared and scanning electron microscopy-Energy dispersive spectrometer was used to study the diffusion of elements and phase …
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20151231· A brief introduction to recent developments in iron ore pelletizing is provided in this chapter, including the world output of fired …
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2024612· Iron ore pelletizing has become a cornerstone in the iron and steel industry, enhancing the efficiency and sustainability of steel production. This technology transforms low-grade iron ores into high-quality pellets, which are crucial for the modern steelmaking processes. The evolution of pelletizing from its inception in the early 20th century to today''s advanced …
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2025714· The global iron ore pellets market size is projected at USD 2.25 billion in 2024 and is expected to hit USD 4.53 billion by 2033 with a CAGR of 8.1%.
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The silicate in pellet 2 was dense, granular and smaller than that in pellet 1. The quantitative analysis results for the two kinds of pellets showed that pellet 2 contained more hematite. Moreover, pellet 2 contained less unoxidized magnetite than pellet 1.
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Iron ore pelletizing is a proven and mature technology, making available plants with production capacity up to 10 Mt/year of pellets to be used in Blast Furnaces, Corex and Direct Reduction units.
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202421· GRATE KILN The Allis-Chalmers process employed in the travelling grate-kiln-cooler is again best suited for either magnetite or magnetite + hematite blend of iron ore. Green pellets, fed on to a travelling grate are dried and preheated to a certain temperature, discharged into a rotary kiln for firing and cooled in an annular rotary cooler. Thus,the pelletizing process …
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202061· The hematite pellets with uniform size, rich iron content, high metallurgical properties and low energy consumption [4], are widely used in blast furnaces. During the pelletization process, fine hematite particles, binders and water are mixed together, and agglomerated in drums to produce green pellets with certain sizes.
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Iron ore Hematite, the main iron ore found in Brazilian mines Stockpiles of iron ore pellets like this one are used in steel production. An illustration of iron ore being unloaded at docks in Toledo, Ohio Iron ores[1] are rocks and minerals from which metallic iron can be economically extracted.
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101· In the reduction process of iron ore pellets, synthesized magnetite pellets with 31.03% porosity are reduced at a higher degree of reduction than hematite pellets with 27.50% porosity, in a reduction gas consisting of 30% CO and 70 % N 2.
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20· To eliminate the adverse effect of incompletely mineralized magnesium additive on pellets strength, clarify the interaction between additives and iron ore during the induration process, two types of interaction couples were prepared and scanning electron microscopy-Energy dispersive spectrometer was used to study the diffusion of elements and phase …
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20141126· The energy consumption needed for the pellet production from hematite ore fines is greater than that needed for pelletizing the magnetite ore fines. Moreover, pellets made from hematite ores have poor roasting properties and do not achieve adequate physical strength until the roasting temperature is higher than 1300 deg C.
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2024125· Abstract China''s significant reliance on imported iron ore is due to its poor resource endowment and low utilisation levels. Given the urgent …
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2025311· The iron ore utilized in the pelletizing experiment comprised oolitic hematite sourced from Enshi Prefecture in western Hubei Province and …
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2025115· Consequently, it is beneficial to enhance the production of oxidized pellets for efficient and sustainable ironmaking. The production process of oxidized pellets from iron-containing raw materials, mainly hematite concentrate and magnetite concentrate, includes multiple steps, such as pelletizing, drying, preheating, and roasting [5].
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1.2.2.2 Agglomeration of Iron Ore The three major forms of iron used in ironmaking are pellets, lump, and sinter. The major change in the past 50 years has been the development of cost-effective pelletization technology allowing pellets to be a major source of iron oxide for ironmaking processes. From 1965 to 1985, the percentage of iron feed composed of pellets increased …
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2025311· The iron ore utilized in the pelletizing experiment comprised oolitic hematite sourced from Enshi Prefecture in western Hubei Province and iron concentrate, with Indonesian bentonite serving as the binder. The chemical composition of the raw materials is detailed in Table 1. As illustrated in Table 1, the gangue content of oolitic hematite is significantly elevated, with …
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Iron ore Hematite, the main iron ore found in Brazilian mines Stockpiles of iron ore pellets like this one are used in steel production. An illustration of iron ore …
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