Researchers observed that using less reactive iron ore tailings powder as a cement replacement in the construction of green ECC (Engineered Cementitious Composite) decreases matrix …
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China generates 1.5 tons of iron ore tailings for each ton of iron ore concentrate.21,22 In this country, the annual production of iron ore tailings reaches about 180 million tons and is increasing.23 In India, between 10-12 million tons of iron ore tailings are extracted in the form of ultrafine waste.24 In Australia, it is estimated that ...
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A vertical planetary ball mill was used to grind iron ore tailings in another study [199], which caused the specific surface area to increase from 103 m 2 /kg (raw iron ore tailings) to 463 m 2 ...
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Iron ore tailings, a remnant of iron ore treating, are one such waste material that holds potential for sustainable applications in the construction industry. Activating industrial waste items like fly ash or slag results in GPC, a type of concrete that has developed as a more sustainable substitute for conventional Portland cement-based ...
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manufacturing facilities to produce slag-based cement, which is formed from granulated BF calcareous slangs and limestone. Iron ores are used in cement manufacturing plants to improve combustion properties, add color, and ensure a balanced composition. These are the specifications for iron ore used in the cement industry.
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Iron ore tailings (IOT), the predominant solid by-products of iron ore mining and refining, present significant environmental challenges due to their sheer volume. This paper endeavors to scrutinize the prospective deployment of IOT as an alternative to soft soil in the fabrication of controlled low strength materials (CLSM) for backfill applications.
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Iron ore tailings (IOTs) are solid wastes produced in the process of iron ore beneficiation. Pollutants from tailings wastes sometimes cause serious environmental problems and damage, not only to animals and plants but also to human health (Nishijima and Rocha, 2020; Wang et al., 2023; Wilson and Pyatt, 2006).In China, the accumulated IOTs have reached 5 …
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The disposal of gold ore tailings (GTs) has been a very difficult problem for a long time. Thus, this study explored a new approach to the management of GTs by preparing Portland cement.
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It is entirely feasible to use garbage and byproducts as concrete aggregates. Iron ore tailings were another concrete application. The use of iron ore tailings in the manufacture of ceramic tiles was investigated, and it was discovered that tiles containing up to 40% iron ore tailings had higher hardness and strength. As the world becomes more
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IJESC, 2019. Iron Ore Tailings (IOT) are the waste slag resulted from iron ore mines. Large amount of Iron Ore Tailings (IOT) have been generating every year posing serious environmental problems, large production of cement everyday resulting the emission of CO 2 and increase in the consumption of river sand for construction activities making the river beds over-exploited.
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iron ore tailing as a partial substitute for Portland cement. Thus, a characterization of the material was carried out, after grinding, and tests in pastes to study the performance of
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This work investigates the usage of graded iron ore tailing sands (GIOT) as aggregates in cemented mortar to reduce the pollution of iron ore tailings (IOT) and shortage …
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In geopolymer reactions, with lime rich compound addition, the strength parameter is dependent on the molar ratios of (Si/Al) and (Ca/Si), such that (Si/Al) ratio contributes to short period and ...
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Figure 2 presents the XRD pattern of lead-zinc tailings coming from different resources. Previous research [21] reveals that the mineral phases of the lead-zinc tailings include calcite, dolomite ...
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DOI: 10.1016/J.JAFREARSCI.2017.11.004 Corpus ID: 134910272; Study of Zn-Pb ore tailings and their potential in cement technology @article{Nouairi2018StudyOZ, title={Study of Zn-Pb ore tailings and their potential in cement technology}, author={Jih{`e}ne Nouairi and Walid Hajjaji and Cristiana Costa and Luciano Senff and Carla Patinha and E. Ferreira da Silva and …
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Download Table | Chemical Composition of Iron Ore Tailings in Units of Weight Percent from publication: Feasibility Study of Developing Green ECC Using Iron Ore Tailings Powder as Cement ...
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It is worth noting that the cement industry is facing severe environmental problems. For example, cement production will emit large amounts of toxic metals ... Preparation and characterization of Portland cement clinker from iron ore tailings. Constr. Build. Mater., 197 (2019), pp. 152-156, 10.1016/j.conbuildmat.2018.11.236. View PDF View ...
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Fig. 2 illustrates the iron ore beneficiation process, particularly magnetic separation, resulting in the generation of inevitable tailings. Due to the characteristics of iron ores and the conditions during beneficiation, it is inevitable that approximately 2.5–3 tons of IOTs are generated for every 1 ton of iron ore concentrate produced [7].In 2019, the global annual …
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Request PDF | On Jun 1, 2024, G. Yang and others published Exploration of iron ore tailings with high volume in sustainable cement and ecofriendly cementitious material | Find, read and cite all ...
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In the same way, the cement industry is an intensive consumer of raw materials and a major emitter of greenhouse gases. As one of the main alternatives for reducing these impacts, clinker substitution by wastes from other industries is being extensively considered. ... Feasibility study of developing green ECC using iron ore tailings powder as ...
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Experiments were conducted to determine the suitability of iron ore tailing (IOT) as fine aggregate replacement of sand (RS) for concrete used for rigid pavement.
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The construction industry has been improvising through the advances in innovation and procedure. Concrete, which is the essential part in development industry, is being utilized more than manmade materials and it expands more …
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Iron ore tailings (IOTs), ... or calcium aluminosiliceous materials. The cement industry is an industry that requires a larger quantity of raw materials and energy [9, 10]. At present, many of SCMs used in cement are mainly by-products of other industries, such as blast furnace slag, ...
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Disposal of mill tailings is one of the major problems in mining industry. Investigations are being done all over the world to utilize tailings for useful purposes.
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In Brazil, iron ore tailings generally have higher levels of iron reaching about 60% of Fe in its composition [3], [13], [15], [17], [7], [25], and they can reach a granulometry in natura as fine as that of cement particles [7], [25]. Investigations evaluating the influence of this type of IOT, rich in iron, as SCM are scarce.
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1. Introduction. Ordinary Portland cement has become an indispensable building material in the construction industry with the rapid development of industrialization [1, 2].Cement production in China reached 2.316 billion tons in 2017 [].Large quantities of natural materials such as limestone, bauxite, clay, sandstone, and gypsum have been consumed in the cement industry.
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Current research status and progress on the cementitious activity of iron ore tailings and these three directions are reviewed, and the future scope of research in this area is suggested.
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The present work discloses the development of a sustainable cement tile (SCT) produced with Iron Ore Tailings from tailings dams (IOT). Initially, technical evaluation and environmental analysis ...
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Tailings are solid wastes of the ore beneficiation process in the extractive industry and are available in huge amounts in some countries. This paper reviews the potential …
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A large number of iron ore tailings produced by the iron ore beneficiation industry have become a major challenge for industry owners and local government dealing with waste due to their ...
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