With the symbiotic advancement of industrial processes and digital technology, there has been a sustained surge in global iron ore demand [[1], [2], [3]].The progressive depletion of high-grade iron ore resources has compelled the shift towards low-grade counterpart [4, 5].As per data, the production of 1 tonne of iron concentrate is accompanied by the generation of 2.5–3 …
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With the continuous development of industrialization and the increasing investment in infrastructure in China, the demand of steel is growing rapidly, which leads to the increasing consumption of iron ore and the emission of iron tailings (Wang et al., 2023).Iron tailings, one of the solid resources, is a waste from the separation of iron concentrate using magnetic and …
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Utilizing iron ore mining wastes like dump fines, slimes, and tailings, which contain significant iron values, is essential to meet future needs and environmental sustainability, requiring intensive research to develop a process that can identify the route for sustainable usage. Reduction roasting is a proven route for converting and recovering high-grade iron value from …
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Reduction of iron ore tailings to generate concentrate of 61.3% Fe(T) and recovery rate of 88.2% (coal: iron ore tailings 1:100, 800 °C, 30 min and milling 15 min) were observed. A fluidized magnetization of hematite to magnetite concentrate (at 540 °C, 4 m 3 /h CO, 1.0 m 3 /h N 2) were carried out.
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The magnetic component of the SLon cleaning unit is collected as the final iron ore concentrate. Plant results have demonstrated that an iron ore concentrate containing 67.1% Fe can be produced from run-of-mine ore containing 34.9% Fe, at a mass yield of 38.9% to the iron ore concentrate, an iron recovery of 74.7%, and a tailings grade of 14.4% Fe.
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As the iron and steel sector expands quickly, emissions of industrial waste iron tailings sand from ore dressing rise year over year, yet only 20% of iron tailings sand is recycled as resource [2].
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The chemical and physical properties of iron ore tailings are comprehensively examined in this review, and various beneficiation and metallurgical recovery techniques such as flotation, magnetic separation, leaching, and magnetization roasting are rigorously evaluated.
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In addition, a low-intensity peak of quartz and two low-intensity peaks of magnetite are observed for the magnetic concentrate and the tailings, respectively; this is because the fine-grained quartz in the roasting feed was not sufficiently dissociated from the iron minerals. ... A new approach for recovering iron from iron ore tailings using ...
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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].
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Iron ore tailings are industrial solid wastes generated from mineral processing. The disposal of iron ore tailings leads to environmental threat and serious security because of their tiny particle size and large storage. In this paper, suspension magnetization roasting and magnetic separation technology were utilized to recover iron tailings. The results showed that iron …
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Abstract In this paper, a novel method to recover iron from iron ore tailing (IOT) was studied. The method was induced with carbothermic reduction, followed by magnetic flocculation separation (MFS) and conventional magnetic separation (CMS). The effects of reduction temperature, as well as the amount of coal and sodium carbonate on iron recovery …
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In this plant 700 t/h ore (containing 51% iron) is treated to produce 350–400 t/h concentrate with iron contents of 63%. The tailing of the iron ore beneficiation plant (containing 17% iron) at a mass flow rate of 300–350 t/h in slurry form with 5–8% w/v solids% is usually dewatered in two parallel thickeners (D = 55 m, H = 6.6 m).
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In this study, a pilot-scale experiment on the iron recovery from iron ore tailings was investigated using innovative technology of pre-concentration and suspension magnetization …
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A novel method of fluidization roasting followed by magnetic separation was used to recover iron from the magnetic pre-concentrate of the iron ore tailings. At 540 °C roasting temperature, it was found that 04 m 3 /h CO and 01 m 3 /h N 2 mixture almost reduced the Fe 2 O 3 phases to Fe 3 O 4.
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Iron ore tailings (IOT), a major solid waste byproduct of mining operations, present a potential opportunity to partially address the challenges associated with PG-based SSC. IOT typically contains silicon in the form of quartz and iron in the form of magnetite. Although these minerals do not readily participate in hydration reactions, recent ...
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The separation technology provides for production of iron ore concentrate with total iron content of 65.9% and recovers 91.0% of magnetite and 80.5% of hematite from the tailings containing 20.4% of total iron. The proposed technology will increase production of the concentrate at a dressing plant and reduce environmental impact. 1 Introduction
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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 technology in mineral …
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Yang et al. [144] demonstrated an increase in SiO 2 content from 68.7% to 92.6 wt.% by applying this technique to iron ore tailings. Additionally, a further improvement of the SiO 2 content ...
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The rougher concentrate and tailings were obtained after flotation in both grinding and reagent regime experiments. After filtering and drying the concentrate, its mass (m1) was determined, allowing the calculation of the concentrate yield (γ) in relation to the feed mass (m). ... The experimental ore belongs to iron tailings, containing a ...
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The overall concentrate obtained from the developed beneficiation process of iron ore tailing has 61.53% Fe, 5.27% SiO2, and 2.44% Al2O3 with 26.34% weight recovery. And final tailing obtained from the entire process has 36.98% Fe with 73.66% weight which cannot be upgraded using the conventional beneficiation process.
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In iron ore processing plants, different tailing streams are usually transferred to the tailings thickener for partial dewatering and finally transferred to the tailings dam as a single stream. Therefore, the mixing of different tailings streams happens. This way can challenge the process of reprocessing the tailings in the tailings dam since the mixing of different tailings …
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In this paper, suspension magnetization roasting and magnetic separation technology were utilized to recover iron tailings.
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Iron tailings, generated from the beneficiation and metallurgy of iron ore, are hazardous wastes that pose significant environmental challenges due to their large-scale disordered storage, resulting in widespread damage and safety concerns [1], [2].The annual worldwide deposition of over 10 billion tons of iron tailings in tailings dams has made it …
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Currently, approximately 1.4 billion tons per year of iron ore tailing wastes (IOT) are generated, mainly in Australia, Brazil, and China. This work describes the characterization and application of two typical IOT, i.e., fine and …
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The concentrate and tailings produced average 32.7% and 0.18% copper, respectively. I let you do the math! Three product (bi-metallic) formulas. Frequently, a concentrator will mill a complex ore requiring the production of two separate concentrates, each of which is enriched in a different metal or valuable mineral, plus a final tailing ...
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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 …
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Results show that it is possible to achieve 65.78 (%) of Fe, with 2.65% Al 2 O 3, 3.66 SiO 2 (%) in the concentrate using synthetic mixture feed and more than 60% of Fe is …
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As of 2023, the demand for iron ore continues to grow as the world economy expands. Therefore, it is necessary to extract and recover iron from various sources, including …
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Iron ore tailing is a kind of hazardous solid waste produced by iron and steel industry. In order to separate and recycle iron from the magnetic preconcentrate of an iron ore tailing, an innovative technological route of fluidized magnetization roasting followed by low-intensity magnetic separation was proposed in this paper. The effects of roasting temperature, …
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(3) After the treatment for the tin-containing tailing by the technology of the pre-enrichment, calcification − volatilization − magnetization roasting, and magnetic separation, the iron concentrate with iron recovery ratio of 65.42 % for the pre-enrichment concentrate, iron grade of 60.13 % was obtained and an arsenic removal ratio of 92. ...
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Currently, approximately 1.4 billion tons per year of iron ore tailing wastes (IOT) are generated, mainly in Australia, Brazil, and China. This work describes the characterization and...
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Resource Recovery and Recycling from Metallurgical Wastes. S. Ramachandra Rao, in Waste Management Series, 2006 9.8 Production of Ceramic Tiles from Iron Ore Tailings. Current practice of washing iron ore before it is processed for extractive metallurgical operation results in three products, coarse ore lumps with sizes in the range 10-80 mm, which are directly charged …
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