Moreover, the use of iron ore tailings in pavements layers also contributes by creating a new disposal method to the tailings, reducing the environmental impact related to the mining activity, and ...
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The structures with the addition of 10% and 20% of iron ore tailings had about the same results as the structures of soil–cement with no addition of iron ore tailings. Moreover, the use of iron ore tailings in pavements layers also contributes by creating a new disposal method to the tailings, reducing the environmental impact …
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The annual disposal of iron ore tailings in Brazil is about 200 million tons, approximately 35% of the total generation of tailings in the country (IPEA, 2012). In addition to this large volume of ...
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Abstract. The generated tailings in the mining sector are mostly disposed through conventional tailings management systems (e.g., storing in tailings dams). Due to the depletion of global ore deposits and new environmental rules, it is inevitable to …
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DOI 10.2462/09670513.832. Methods for the disposal a nd storage of mine tailings. Darron W. Dixon-Har dy and Jon M. Engels. Abstract. T ailings storage facilities vary considerably in size, design ...
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The improper disposal of such waste causes negative impact on the environment. ... [33][34], and sanitary ware [35], among others. Various mining waste types stand out, including iron ore tailings ...
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Mine tailings impoundments produced during beneficiation and extraction of iron ores create environmental threat and are disposed at high monetary and …
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However, the disposal and high value-added utilization of iron tailings have always been a challenge. Notably, superconducting high-gradient magnetic …
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The physical and chemical nature of the tailingslime depends on milling operations and water contentin the effluent. The characteristics of the tailingsdictate the type of disposal facility required.Characteristics of the tailings, transportation frombeneficiation plants and disposal system are described.Studies on tailing slime have been carried out at ironore …
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The use of iron ore tailings (IOT) is a trend for the future of mining. The adoption of alternatives that minimise the disposal of natural resources and add value to production processes strongly ...
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Tailings are a by-product of mining. After ore containing an economically-recoverable commodity is mined from the earth, that commodity is extracted in a processing plant or mill. After the commodity of value is extracted from the ore material, the resultant waste stream is termed "tailings". Typically, mill tailings range from sand to silt ...
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Increased mining activity of iron ore has led to the generation of voluminous wastes of various nature, especially during the different stages of its extraction and production. The improper disposal of such waste causes negative impact on the environment. One such waste which is generated during the beneficiation process of …
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In this scenario, recycling mine tailings can help reduce the number of tailings for disposal. Circular economy, recyclability, recycling, and reuse have been …
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However, as ore grinding continues, the particle size of iron tailings becomes finer, and some clay minerals absorb water, making it challenging to separate the remaining tailings from water . Massive storage of iron tailings in tailings ponds or tailings dams not only harms the environment but also poses a serious threat to human …
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Three parts composed the experimental program. The first encompassed the physical–chemical characterization of the iron ore tailings (IOT). The second comprehended the assessment of the effects of the dry unit weight (γ d) and the amount of cement (C) on both the initial shear modulus (G 0) and unconfined compressive strength …
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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 2019, have forced Brazilian mining companies to search for more sustainable and safer alternatives for tailings disposal. The Brazilian mining industry has been studying the …
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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 ...
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The improper disposal of such waste causes negative impact on the environment. One such waste which is generated during the beneficiation process of iron …
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However, the specific properties of tailings vary with ore type. Process-affected water in tailings pond generally contains metals and acid that must be neutralized prior to disposal. Sulfide mineralization remaining after processing of solid tailings creates a potential environmental problem.
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1. Introduction. In recent years, with the rapid development of the iron and steel industry, the amount of industrial waste gases, wastewater, and waste residues has increased every year [[1], [2], [3], [4]].Among these, the amount of iron ore tailings discharged from concentrators is enormous, and more than 10 billion tons of iron ore …
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It is worth mentioning here that disposal of IOT in open-air contaminates the land, pollutes the environment, water and even threatens human health owing to its toxicity ... Innovative methodology for comprehensive utilization of iron ore tailings Part 2: The residues after iron recovery from iron ore tailings to prepare cementitious material ...
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In this scenario, restoration techniques from mining tailing have become increasingly discussed among scholars due to their potential to offer benefits towards …
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The plants are then harvested and processed to produce a high-grade ore and decrease its effects on the ecosystem. The practice of phyto-extraction has additional benefits beyond removing heavy metals from tailings waste: in the process of extracting the minerals from the tailings, the site is rehabilitated from adding vegetation to the ...
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For the IOT Binder production, the sand from iron ore tailings and the overburden clay were considered a waste with no associated environmental burden. …
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The disposal of mining tailings has increasingly focused on the use of dry stacks. These structures offer more security since they use filtered and compacted material.
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The dry stacking of filtered tailings is an option to deal with safety-related issues involving traditional slurry disposition in impoundments. Filtered tailings can be compacted to pre-define design specifications, which minimizes structural instability problems, such as those related to liquefaction. Yet, comprehending the tailing's …
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To increase the safety of its mines, countries could look beyond dams for storing iron ore waste. New technology has created some promising alternative solutions. Alcan built on the technology for red mud washers, but pumped the underflow and used dry tailings disposal methods (Robinsky 1978) with the thick mud. These include …
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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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Recognized as precious secondary resources, IOTs encapsulate recoverable metals such as Cu and Fe, juxtaposed with harmful elements like Pb and Cr, …
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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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Iron ore tailings (IOTs) are a form of solid waste produced during the beneficiation process of iron ore concentrate. In this paper, iron recovery from IOTs was studied at different points during a process involving pre-concentration followed by direct reduction and magnetic separation. Then, slag-tailing concrete composite admixtures …
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Abstract. Mining operations degrade natural ecosystems by generating a large quantity of mine tailings. Mine tailings remain in dams/open ponds without further …
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Onitiri and Akinlabi 4 used 20% by volume of iron ore tailings as maximum ... M., Vink, S. & Keir, G. A framework for a sustainable approach to mine tailings management: disposal strategies. J. ...
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