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In the iron ore sintering process, the particle size distribu- ... Before using washed ore nes in sinter base mix at plant level, basic labo-ratory studies are required. 1.1 Experimental ... Micropellet 39.1 8.21 3.71 0.72 19.24 3.30 16.63 14.56 DRI nes 87.0 Total 87.40 1.20
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Iron ore sintering dust, a solid waste produced during steel manufacturing, contains high levels of lead and iron compounds, particularly anglesite and hematite. Traditional sulfidation flotation methods struggle to effectively separate these fine-grained minerals. ... Before this analysis, we ground the samples with an agate mortar until they ...
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In this study the use of iron ore concentrate and micropellets as sinter feed was evaluated. Five mixtures containing different proportions of iron ore concentrate and micropellets, together with iron ore fines, were prepared. These mixtures ... coalescence was observed for the 0% micropellet – 40% concentrate ...
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Ultrafine iron oxide wastes such as slime, blue dust and Linz–Donawitz (LD) converter sludge have very limited use in sintering of iron ore due to their excessive fineness (−50 μm). Pelletisation o...
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Ultrafine iron oxide wastes such as slime, blue dust and Linz–Donawitz (LD) converter sludge have very limited use in sintering of iron ore due to their excessive fineness …
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History and Prospect of Philippine Sinter Corporation ippine Veterans Investment Development Corporation) in the environs of Cagayan De Oro city in the northern part of Mindanao Island, which is located on the iron ore shipping routes from Australia, Brazil, and other ore-exporting nations and enjoys favorable port conditions
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The samples were produced in a sintering pilot plant mixing/granulation drum (cement mixer type). The composition is a typical sintering mixture: iron ore fines (which are a blend of hematitic and goethitic ores, generally used for sintering), sinter return fines, limestone, burnt lime and coke. Around 1 kg of the
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Ore fines undergo agglomeration processes, such as pelletising or sintering, before their use in reduction furnaces. The material produced in one of the stages of sintering is the focus of this work.
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A number of studies have explored the possibility of replacing fine iron ore by ultrafine materials (concentrates, dust, iron ore wastes) in sinter making (Rankin, Roller and Batterham 1983;Borges ...
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With the depletion of high-grade lump iron ore, concentrates have been identified as an alternative material for sinter making. In this study, the effect of concentrate and micropellet additions on the permeability of the sinter mixture was investigated. Permeability was measured on sinter mixtures containing 10–40% concentrate or micropellets at various moisture …
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The sintering process is an intricate system with a protracted process flow. The steps in the manufacturing line are primarily composed of the ingredients and mixing process, the sintering operation process, and the treatment of the sintered ore [39, 40].2.2 Important parameters and characteristics of sintering process. As shown in Fig. 2, all variables affecting …
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Effect of concentrate and micropellet additions on iron ore sinter bed permeability. A. M. Nyembwe, R. D. Cromarty, and A. M. Garbers-Craig [email protected ... P. C. 1999. A …
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High moisture content might result in a reduction in friction between granules as well as the formation of closer packing. The aim of this study was to investigate the influence of the …
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The use of iron ore concentrate has become of interest as the demand for higher grade sinter feed is increasing. The fine nature of the concentrate however raises concerns as it can affect …
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The production of lower grade iron ore has been increasing due to the depletion of high-grade lump ore. ... Effect of concentrate and micropellet additions on iron ore sinter …
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The second stage is slow and can be enhanced by collisions before intermediate particles are incorporated into the adhering layer. ... Effect of Concentrate and Micropellet Additions on Iron Ore Sinter Bed Permeability. Proc. Iron Ore 2015 — Maximising Productivity, 13–15 July 2015, Perth, Western Australia (2015) Google Scholar
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Granule shape based on morphological observations (Powers, 1953). The raw materials used in this study consisted of fine iron ore, concentrate, micropellets, return fines, coke breeze, limestone, and dolomite. The three iron ore bearing materials (fine iron ore, concentrate, and micropellets) are respectively shown in (Figure 6).
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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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The second stage is slow and can be enhanced by collisions before inter- ... Most studies on the granulation of iron ore for sinter production agree that granulespredominantly form through a layeringprocess. Finepar- ... the micropellet surface during the granulation process. In both cases, the number of seeds (coarse particles) onto which the ...
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Currently, steel production in China is dominated by the BF-BOF route, and sinter is an indispensable high-quality raw material for blast furnace ironmaking (Wang et al., 2019).The energy supply for the iron ore sintering process relies on coke breeze or anthracite under conventional conditions, and hydrogen-rich gas is considered as "bridge fuel" for carbon …
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At present around 6–7% of iron ore slimes, out of total production, are being generated and accumulated at iron ore mine sites of National Mineral Development Corporation Limited, India. The accumulated slimes of finer size and relatively inferior grade should be utilized in an economical way for sustainable mining. These slimes can be agglomerated into micro …
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The iron ore sintering process needs to be optimised to decrease its energy intensity and emissions of carbon and atmospheric pollutants, while continuing to produce …
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Sintering is the most economic and widely used agglomeration process to prepare iron ore fines for blast furnace use. In this chapter, the sintering process is first described and the key steps of the sintering process, namely, granulation and thermal densification, are …
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The above limitations of using ultrafine iron oxides would be alleviated if these fines could be converted to a suitable granular form. Several investigators13 – 15 prepared micropellets from these fines and produced BF grade sinter. However, the sufficient cold handling strength of these micropellets is required to minimise fines generation during their transportation, handling …
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Thick-bed sintering, with its lower fuel consumption, higher yield and mechanical strength, has been used in many steel mills in China (Xu et al., 2023), and the thickness of the sintering bed has been increased from 700 mm to more than 900 mm (Liu et al., 2020).But with the increase of the bed height, the permeability of the bed decreases, which reduces the yield …
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With the depletion of high-grade lump iron ore, concentrates have been identified as an alternative material for sinter making. Adding concentrates to the sinter mixture reduces sinter bed porosity and gas flow through the sinter bed. This will result in lower sinter strand productivity. A potential solution to this problem is to add concentrate in the form of …
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With the depletion of high-grade lump iron ore, concentrates have been identified as an alternative material for sinter making. Adding concentrates to the sinter mixture reduces sinter bed porosity and gas flow through the sinter bed. This will result in lower sinter strand productivity. A potential solution to this problem is to add concentrate in the form of micropellets.
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Request PDF | On Jul 13, 2015, Alain Mutombo published Effect of Concentrate and Micropellet Addition on Iron Ore Sinter Bed Permeability | Find, read and cite all the research you need on ...
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Effect of concentrate and micropellet additions on iron ore sinter bed permeability. A. M. Nyembwe, R. D. Cromarty, and A. M. Garbers-Craig [email protected ... P. C. 1999. A combined model for granule size distribution and cold bed permeability in the wet stage of iron ore sintering process. International Journal of Mineral Processing, 57, (1 ...
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Secondary agglomeration mechanisms occur with concentrate and micropellet addition. ... The second stage is slow and can be enhanced by collisions before intermediate particles are incorporated into the adhering layer. ... In the process of iron ore sintering, the pore size and distribution of the bed have an essential effect on the heat ...
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