Laboratory investigation on the bioremediation technology for
Raw materials. The iron ore tailings used in the experiment were collected in early April 2024 from the Beitai Iron ore Tailings Pond in Benxi city, Liaoning Province, at a temperature of ...
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Optimizing iron separation and recycling from iron tailings: A
Iron tailings, a type of refractory iron ores, pose a challenge for effective iron recovery due to the complex mineral combinations and liberation modes. In this study, we proposed a new approach to improve the quality of iron concentrates by combining alkaline …
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What are Tailings
Tailings are generally contained in some type of impoundment, which is buttressed by a tailings dam. ... Mineral commodities commonly recovered in the United States are copper, gold, silver, iron, lead, zinc, uranium and coal. The commodity, as a product, is sold and used to fabricate many things such as parts for a car, electrical cable for ...
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Sustainable iron recovery from iron ore tailings using hydrogen …
Iron tailings are a common solid waste resource, posing serious environmental and spatial challenges. This study proposed a novel hydrogen-based reduction roasting (HRR) technology for the processing of iron tailings using a combined beneficiation and metallurgy …
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Basic characteristics and environmental impact of iron ore tailings
iron ore tailings (IOTs), mineralogical characteristics, grindability, Particle size. distribution, particle morphology, composite cementitious material (CCM) 1 Introduction.
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Adsorption of heavy metal ions by iron tailings: Behavior, …
Iron tailings, as a valuable secondary resource, is a part with low content of valuable elements produced during the processing and utilization of iron ore. Efficient processing and utilization of iron tailings will be positive to save energy, protect the environment, produce cleaner production and improve economic benefits (Cui et al., 2021 ...
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Mechanical behaviour of Panzhihua iron tailings
Iron tailings from Panzhihua were reconstituted with different preparation methods to assess the effects of fabric. Oedometer tests were conducted to identify whether nonconvergent compression behaviour existed …
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Iron Ore Tailings: Characterization and Applications
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 Utilization of Iron Ore Tailings to Recover SiO
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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Are Iron Tailings Suitable for Constructing the Soil Profile
Iron tailings used as soil substitute materials to construct reclaimed farmland soil can effectively realize the large-scale resource utilization of iron tailings and reduce environmental risks. It is vital to understand the mechanisms affecting reclaimed soil quality and determine the appropriate pattern for reclamation with iron tailings.
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Recent practices in mine tailings' recycling and reuse
Copper-rich tailings can be turned into lightweight ceramics by sintering iron tailings mixed with fly ash and sewage sludge in paint making. Tailings can be used as additives for soil in road construction in the construction industry. In addition, lithium extracted from tailings can be considered both as a mineral and as lithium carbonate in ...
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Iron Ore Tailings: Characterization and Applications
iron ore tailings (IOT) are generated, i.e., a coarse tailing, generated in the flotation stage, consisting mainly of quartz, and a fine tailing, whose main components are usually quartz,
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Iron Ore Tailings Management — Canadian Critical Minerals …
Effective tailings management is crucial for any mining operation, especially in handling iron ore tailings. This section offers insights into the importance of tailings management and introduces holistic strategies for managing these by-products.
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Iron Ore Tailings: Characterization and Applications
The effects of FePO4 obtained from iron tailings under different pH conditions on the final structure of LiFePO4/C were evaluated, focusing on morphology and electrochemical performance. Some studies70 mention the use of iron tailings as an anodic catalyst for the generation of energy in microbial fuel cells. The use of tailings may produce ...
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Full Length ArticleMechanical behavior of iron ore tailings under standard compression and extension triaxial stress paths
Basic characteristics and environmental impact of iron ore tailings
Iron ore tailings (IOTs) are the indusus solid waste discharged by concentrating mills after processing iron ores and selecting "valuable components" (Yao et al., 2020). In China, 600 million tons of IOTs are discharged every year and the IOTs deposition has reached 5 …
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Recovering Iron from Iron Ore Tailings and Preparing Concrete
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 were prepared from high-silica …
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Hydraulic classification and sedimentation behaviors of iron tailings
Tailings pond is a large-scale fragmented sedimentary body formed by mining tailings, and the safety management of tailings pond affects the sustainable development of mining productions. The nature sedimentation behavior of the tailings is the initial condition to obtain the particle fractal dimension and packing structures of tailings, and is also the basis to …
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Field application and effect evaluation of different iron tailings soil
Iron tailings continue to generate and accumulate in large quantities, leading to problems such as large land area, environmental pollution and high ecological risks. Therefore, there is an urgent need to develop economic and effective technologies for the large-scale utilization of subway tailings. In this study, aiming at the problems of low ...
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Spatiotemporal evolution of mine tailings released in sand-bed …
The dispersion and fate of mine tailings in riverine systems are studied through classical morphodynamic evolution analysis. This paper develops a 1D sediment formulation to assess the long-term spatiotemporal evolution and spreading of a single iron-ore tailings pulse …
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Mechanical behaviour of Panzhihua iron tailings
This paper presents a detailed investigation of the mechanics of tailings taken from three locations of an iron tailings impoundment. Reconstituted samples were prepared by different methods and at different densities.
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Exterior Metal Railings | Made-To-Order
Newman Iron Works specializes in custom-designed, made-to-order exterior metal railings that blend timeless craftsmanship with modern design. Choose from aluminum for its lightness and affordability, wrought iron for its classic …
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Critical State Analysis for Iron Ore Tailings with a Fine-Grained
The formation of layering during the sedimentation process of tailings makes it of great significance to investigate tailings and to analyze their susceptibility to flow liquefaction. In this study, homogeneous iron ore tailings (IOTs) specimens were reconstituted with pure coarser grains and pure finer grains sampled from a typical tailings storage facility. Additionally, an …
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Are Iron Tailings Suitable for Constructing the Soil Profile
Iron tailings used as soil substitute materials to construct reclaimed farmland soil can effectively realize the large-scale resource utilization of iron tailings and reduce environmental risks. It is vital to understand the mechanisms affecting reclaimed soil quality and determine the appropriate pattern for reclamation with iron tailings ...
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Stabilization of iron ore tailings with cement and bentonite: a case
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 of 16 tailing …
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Relation between pore structure uniformity and compressive …
Iron tailings are generated as waste in large quantities during mining activities. In 2020, China produced 1.295 billion tons of tailings, with a recycling rate of only 34 % [1].Iron tailings have the potential to be used as fine aggregates because they are relatively inert [2].When iron tailings are used to replace natural sand in concrete, the compressive strength first increases with small ...
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A new approach for recovering iron from iron ore tailings using
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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Durability of concrete incorporated with siliceous iron tailings
With the rapid expansion of the steel industry, iron tailings, released from mineral separation as a sort of waste, has become one of the main solid wastes of industry, and their proportion in industrial solid wastes has been increasing continuously [1].The piling of a large amount of iron tailings may bring many problems such as environmental pollution, waste of …
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Field and laboratory study of iron ore tailings–Portland cement …
Accordingly, the mechanical behaviour of artificially cemented iron ore tailings for dry stacking purposes was evaluated, with a focus on comparing the responses between field-compacted samples and laboratory-assembled specimens. To do this, ultrasonic pulse velocity, unconfined compression, split tensile and triaxial compression tests were ...
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Harnessing iron tailings as supplementary cementitious materials …
The increasing demand for sustainable construction materials has led to the exploration of iron tailings (ITs) as supplementary cementitious materials (SCMs) in Limestone Calcined Clay Cement (LC 3).This study investigates the effects of varying ITs content in LC 3 on compressive strength, microstructure, and environmental impact. Replacing 28 % of LC 3 with …
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Research Progress on Comprehensive Utilization of Iron Tailings
Iron tailings is one of the main solid waste produced in the process of iron ore development, and is also an important secondary resource. The common ways of comprehensive recovery and utilization of iron tailings resources at present are described in detail from five aspects: In terms of the recovering valuable elements, the principle of first pre-concentration …
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