disposal and use of iron ore tailings

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Iron Ore Tailings: Characterization and Applications SciELO

Abstract. Currently, approximately 1.4 billion tons per year of iron ore tailing wastes (IOT) are generated, mainly in Australia, Brazil, and China. This work Iron ore tailings, as a solid waste discharged after beneficiation, may contain different heavy metal elements and toxic substances. It is subject to leaching by Utilization of iron ore tailing as an alternative mineral filler in

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Minerals Free Full-Text Recovering Iron from

Iron ore tailings (IOTs) are a form of solid waste produced during the beneficiation process of iron ore concentrate. In this paper, Among the mining industry tailings and by-products described in the literature acting as polymer additives are: (1) bauxite mining by-products (Al 2 O 3, red Use of iron mine tailing as fillers to polyethylene

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Remediation of heavy metal-contaminated iron ore tailings

Improper disposal of heavy metal-contaminated iron ore tailings poses a significant risk to the surrounding environments. Adding compost and growing ryegrass Iron ore tailings (IOT)—industrial byproducts—are un-floating minerals in the flotation process of raw ore. Their large stockpiles and low utilization rates have become Industrial byproduct Iron ore tailings as ecofriendly materials

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Mechanical response of filtered and compacted iron ore tailings

The disposal of agglomerated and stacked dry filtered tailings is a recent methodology that reduces dependency of raising dams. This technique has become 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 A Case Study on Sustainable Iron Ore Tailing

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Reuse of iron ore mineral wastes in civil engineering

For example, according to the mass balance data (Fig. 12), the tailings (non-magnetic) content from the recycling of the goethite-rich iron ore tailings were minimised and limited to 13.50%.Nonetheless, although there are currently a large number of real mines in operation using filtered tailings, in contrast to the applicability of other dewatered tailings disposal methodologies, the existing literature (from both publications and conference proceedings) on the disposal of compacted filtered iron ore tailings for dry stackMechanical response of filtered and compacted iron ore tailings

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Use of iron mine tailing as fillers to polyethylene

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.The mining industry has seen several significant dam failures in recent years. Dam failures are associated with errors in design, implementation, operation, and monitoring (Azam, 2014, [2]).Dewatered stockpiling (dry stacking) is a safer alternative to tailings dams (Rico et al., 2008, [3]) for tailings disposal; however, this method has not Iron ore tailings dry stacking in Pau Branco mine, Brazil

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Mechanical response of filtered and compacted iron ore tailings

Figure 1 (a-d) illustrates the iron ore waste and cementitious precursor materials under study. Iron ore tailings (IOTs) were obtained from the Ferric Quadrangle located in the province of Minas Gerais, Brazil. IOTs are classified as SM according to the Unified Soil Classification System (USCS) [34].The main physical properties and grain 2 Mine Tailings. The mining operations lead to a production of 20–25 billion tonnes of solid wastes every year, of which mine tailings constitute about 5–7 billion tonnes. [ 4 ]. These tailings are generally disposed, either by direct disposal of tailings in rivers, seas or disposal in form of slurry (25–30% solid) into a cellRecycling Mine Tailings for a Sustainable Future Built

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Using Iron Ore Tailings from Tailing Dams as Road Material

AbstractThe present work aims to evaluate the feasibility of iron ore tailings from tailing dams as an alternative material for road infrastructure. The iron ore tailings were characterized according to their chemical, mineralogical, environmental, and physical properties. Subsequently, the tailings were chemically stabilized using cement, lime, or The iron ore tailings–based cementitious composite with 0.02 wt.% graphene shows an extremely high flexural strength of 15.05 MPa at 3 days, which is 134.4% higher than that of the iron oreCementitious activity of iron ore tailing and its utilization in

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An evaluation of iron ore tailings characteristics and iron ore

According to GB/T 31288–2014 [27] and YB/T 4561–2016 [28], there are three types of IOT: iron tailings powder, iron tailings super fine sand, iron tailings fine sand. 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 byIn most cases, iron ore tailings have fine granulometry, high silica content, iron ox- ides, alumina, and other smaller minerals [ 81 ]. This composition faci litates its use in theRecycling and Reuse of Mine Tailings: A Review of

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Comprehensive Utilization of Resources SpringerLink

The use of iron ore tailings and waste rock to produce concrete aggregate has advantages, significantly reducing the cement clinker and improving concrete performance. In the completed small-scale engineering tests, the amount of cement clinker in concrete can be reduced by 50 to 90%, and the durability of concrete can be 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 Minerals Free Full-Text Recovering Iron from

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Influence of iron tailing powder on properties of concrete

The utilization rate of iron tailings is very low in China. The disposal method of iron tailings is mainly stockpiling, which has caused serious environmental problems and occupied a huge number of land [2]. Effects of iron ore tailings on the compressive strength and permeability of ultra-high performance concrete. Construction andThe newly generated emissions of iron tailings in China alone exceed 600 million tons annually, and the iron tailings output in Brazil will reach 684 million tons per year in 2030 (Schatzmayr WelpUse of iron ore tailings and sediments on pavement structure

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Concrete Made with Iron Ore Tailings as a Fine Aggregate: A

With a rise in tailings content, the compacting factor declines. This may be due to iron ore tailings’ fineness, which allows the particles to fill more voids in new concrete and produce a heavier compacted mass . However, it should be emphasized that all of the mixtures have high compatibility, with compacting factors ranging from 0.8 to 0.92.The research outcomes show that changes in iron ore tailings gradings due to different production processes and the use of different compaction degrees had an influence on its behavior (compression and shearing) at lower stress levels, while at higher stresses levels, this difference is erased and there is a convergence for unique and Critical state analysis of two compacted filtered iron ore tailings

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Feasibility of iron-rich ore tailing as supplementary

The improper disposal of these residues constitutes a major environmental liability, establishing more and more the concern of the mineral sector of having a correct destination. The use of iron ore tailings obtained from the Germano dam in the production of a sustainable concrete. Journal of Cleaner Production, Volume 278, 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 IPEA, Brazil Institute of Applied Economic Research. Diagnosis of Solid Waste from the Mining Activity of non-energetic substances, 2012. 46 p.).SciELO Brasil Reuse of iron ore tailings in the production

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Geosciences Free Full-Text Recycling and Reuse of Mine Tailings

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 use the mine tailings as filler. Subsequently, the chemical composition of the MK and IOT was evaluated by X-ray fluorescence analysis (XRFAbstract. The engineering properties of tailings are important for the safety evaluation and engineering design of tailing dams. In the present study, laboratory experiments were performed to investigate the geotechnical properties of four different tailings, including two iron tailings (coarse and fine) and two copper tailings (coarse and fine).Geotechnical Properties of Mine Tailings Journal of

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