The literature shows the potential use of iron ore tailings as a replacement of natural fine aggregates. As natural sand reserves are depleting day by day, there is a need for substitution for ...
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Presently utilization of tailings can be categorized into two—recovery of iron from tailings and its use as a raw material. Due to depletion of high-grade iron ores, maximum utilization of low-grade ore is taking place. Many beneficiations processes have been applied to increase the Fe% in the ore.
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The stockpiling of IOTs occupies a large amount of land and seriously pollutes the ecological environment, moreover, the tailings dam is undoubtedly a great safety hazard [1,2,3].According to relevant statistics, the global steel industry consumes about 2 billion tons of iron ore, 1 billion tons of metallurgical coal, and 575 million tons of scrap …
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Mine tailings remain in dams/open ponds without further treatment after valuable metals such as iron ore have been extracted. Therefore, rehabilitation of tailings to mitigate the negative …
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The main IOT applications discussed in this review are related to civil construction (aggregates for concrete, mortar, Portland cement additives), ceramic industry, …
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The main IOT applications discussed in this review are related to civil construction (aggregates for concrete, mortar, Portland cement additives), ceramic …
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How can iron ore tailings, the waste products of iron ore mining, be used as a valuable resource for construction? This paper explores the feasibility and performance of using iron ore tailings in controlled low-strength materials, a type of self-compacting and self-leveling concrete. The paper also evaluates the environmental and economic …
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Laboratory critical state line (CSL) testing used in engineering practice to analyse the stability and liquefaction susceptibility of tailings explicitly assumes a unique CSL for a particular tailings. However, there is evidence of non-unique CSLs in some soils, a behaviour commonly referred to as "transitional behaviour". There is currently limited …
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However, in most previous researches, IOT mainly covers three categories: (i) iron tailings rock, used as coarse aggregate, of particle size >4.75 mm, is produced by mechanical crushing low-grade ore and wall rock. (ii) iron tailings sand, used as fine aggregate, particle size ranging from 0.16 mm to 4.75 mm, is produced by grinding and ...
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The massive annual tonnage of iron ore tailings, plus the more demanding environmental policies after the catastrophic collapses of Fundão Dam in 2015 and Feijão Dam I in …
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Tailings are the materials left over after the process of separating the valuable fraction from worthless fraction of the Ore. Here the IOT are collected from the mining area of Tata Joda East Iron Ore, Odisha. 5-30 % of the Iron Ore Tailing is used as replacements for fine aggregates. E. Admixtures
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Iron ore tailings (IOTs) are an inevitable by-product produced during the beneficiation process of iron ore (Almeida et al., 2023). The rapid growth of mineral mining and ferrous metallurgy has led to an increase in the generation of IOTs. Approximately 0.40–0.60 tons of IOTs are generated in the treatment of 1.0 ton of iron ore.
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Stacked tailings have become increasingly popular in recent years as a more environmentally friendly option for tailings disposal. However, the design and assessment of stacked tailings present unique challenges due to their unprecedented heights and the wide range of factors that affect their behavior, including particle types and sizes, …
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The present work aims to identify the influence of the incorporation of iron ore tailings (IOT) obtained from the Germano dam in Brazil in substitution of sand fractions in concrete. The IOT was characterized through particle size distribution, specific weight, and mineralogical composition using x-ray diffraction (XRD).
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Iron ore tailings were also used in other concrete applications. For example, Das et al. [13] studied the use of IOT to develop ceramic tiles and their study showed, that tiles produced at a maximum of 40% of IOT were superior in terms of scratch hardness and strength, compared to European standard specifications.
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Iron ore tailings. A number of representative iron ore tailing samples were acquired from different locations of the dry tailing disposal areas (cf. Fig. 2).As illustrated in Fig. 3, the tailings were loosely dumped as piles; thus, their sampling did not necessitate any particular practice and merely involved filling bags with a hand shovel.A total number …
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Iron ore tailings (IOTs) are by-products generated during the beneficiation process of iron mining, encompassing stages such as gravity separation, magnetic separation, and flotation. The chemical composition of IOTs is profoundly influenced by …
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After the beneficiation of iron ore, the waste is generated, which arise many environmental issues for both living and nonliving components. Iron ore tailings are a byproduct of the mining and processing of iron ore, and their potential use as a replacement resource is the emphasis of this study. The purpose of this research is to …
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Iron ore tailing is a major solid waste requiring advanced recycling methods because ore tailing powder is polluting air and water resources. For instance, about 300 million tons of tailings are disposed yearly in 1229 iron ore tailings dams in the Hebei province in China. Iron ore tailings can be recycled as functional materials because these tailings are …
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Onitiri and Akinlabi 4 used 20% by volume of iron ore tailings as maximum amount in the investigated composites. HDPE is a polymer produced and consumed in large quantities worldwide.
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The compressive strengths of the tailings pellets were shown to increase with time in the curing vessel, closely approaching the 400 lbf of standard iron ore concentrate pellets. These strengths are sufficient to allow use of the tailings pellets as aggregate materials for asphalt and cement.
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A lot of material is left unused during iron extraction, because of less concentration of the intended mineral. During the processing of the extracted ore, it involves milling and grinding which causes generation of tailing waste in the form of slurry.
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The formed iron oxides when separated from the thermally treated tailings can be used in various applications (e.g., pigments, additives). Thermal treatment is also effective in the magnetic separation of formed iron oxides by generating magnetic minerals (e.g., magnetite, maghemite) [68], [69], [70] .
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Three different iron ore tailings (IOT) obtained from flotation processes of three mines located in the province of Quadrilátero Ferrífero, in the state of Minas Gerais, Brazil, were added to the above to …
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Iron ore tailings obtained from the Jiuquan Iron and Steel Corporation in Gansu Province of China were used for the experiments. The iron ore tailings contained 21.51% Fe with a fine particle size of more than 75.00% passing 74 μm. There were many fully monomer dissociated gangue minerals and slimes present in the iron ore tailings.
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However, in most previous researches, IOT mainly covers three categories: (i) iron tailings rock, used as coarse aggregate, of particle size >4.75 mm, is produced by mechanical crushing low-grade ore and wall rock. (ii) iron tailings sand, used as fine aggregate, particle size ranging from 0.16 mm to 4.75 mm, is produced by
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The cement industry has for some time been seeking alternative raw material for the Portland cement clinker production. The aim of this research was to investigate the possibility of utilizing iron ore tailings (IOT) to replace clay as alumina-silicate raw material for the production of Portland cement clinker. For this purpose, two kinds of …
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The iron ore tailings used in the experiments contain more than 60wt% SiO2, and belongs to Anshan type with high silicon content. Table 1. Main chemical components of the iron ore tailings wt% SiO2 63.07 CaO 8.18 MgO 0.23 Fe2O3 13.82 Al2O3 5.6 Also available online at 356 International Journal of …
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With the advancement of global economic development and industrialization, a large number of industrial solid wastes such as tailings, industrial waste residue, and construction waste are produced in the mining and infrastructure construction processes [].Iron ore tailing (IOT) is an industrial solid waste produced after the extraction and …
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Introduction. Billions of tons of mine tailings are generated annually from extracting and processing of metal and mineral ores, 1, 2, 3 stockpiled in about 4,800 mine tailings storage facilities (TSFs), 4 occupying >240,000 ha of land worldwide. 4 Iron (Fe) ore tailings are one of the most challenging global tailings liability, 5 with over 1.4 billion …
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The iron ore tailings come from the Quadrilátero Ferrífero region, located in the province of Minas Gerais (southeast of Brazil). The material used herein passed through several dewatering/filtering processes and is composed of the products derived from two distinct phases; namely, 80% (% by dry mass) of a coarser material resultant …
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Mining operations degrade natural ecosystems by generating a large quantity of mine tailings. Mine tailings remain in dams/open ponds without further treatment after valuable metals such as iron ore have been extracted. Therefore, rehabilitation of tailings to mitigate the negative environmental impacts is of the utmost necessity. This review …
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The use of iron ore tailings obtained from the Germano dam in the production of a sustainable concrete J. Clean. Prod., 278 ( 2021 ), Article 123929, 10.1016/j.jclepro.2020.123929
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For example, the content of SiO 2 in phosphate tailings is 2.1, in contrast to the 75.23 in iron ore tailings. Even if there were all lead-zinc tailings or iron ore tailings, the variation content of SiO 2 is 15.50-69.92 in the lead-zinc tailings or 24.19-75.23 in the iron ore tailings. As a result, if tailings are only classified according to ...
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Iron ore tailings (IOTs) are an important solid waste in the mining industry, which can pollute the environment and endanger human health. However, the disposal and high value-added utilization of iron tailings have always been a challenge. Notably, superconducting high-gradient magnetic separation (S-HGMS) technology is a promising …
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