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Copper is one of the most important base metals and is widely used in industry. In the Earth's crust, copper is most often present in the form of copper–iron-sulfide and copper sulfide, such as the minerals chalcopyrite (CuFeS 2) and chalcocite (Cu 2 S). About 80% of copper ore originates from Cu-Fe-S minerals, primarily chalcopyrite …
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Part of the Resolution Copper Mining land-swap project in Arizona, US, has had serious pushback from a group of Apaches, who sued the US government in January 2021. ... Tailings are the residues ...
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Mining the tailings for copper could offer a self-funding option that has the potential to complete proper rehabilitation. The main risk is associated with the possible inhalation or ingestion of dust, and any remediation of the tailings dumps and rock dumps should include stabilising the surface (e.g. by using vegetation). ...
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In 2018, the global tailings production from copper mining reached 3.44 billion metric tons, up from 3.34 billion metric tons in 2016.
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In copper mining, tailings can account for 95–99% of crushed and ground ores (Edraki et al., 2014). Worldwide, mine tailings are produced at a rate of anywhere from five to fourteen billion tons per year (Adiansyah et al., 2015; Edraki et al., 2014; berger, 2016).
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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).
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Satellite view of a Turkish copper mine tailings dam including (A) dam and (B) slope photos. Overall, conventional tailings storage systems may seem positive at first glance, but they can cause serious environmental (e.g., AMD, dust, wind erosion, soil and groundwater contamination) and/or geotechnical (e.g., tailings dam failure) problems in ...
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In 2021, Metalkol achieved its design capacity for cobalt production and exceeded budget production for both its products, producing 20 718 tonnes of cobalt and 94 807 tonnes of copper. Unlike conventional mining operations which extract primary ore, at Metalkol RTR legacy copper-cobalt tailings are reclaimed and reprocessed.
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Copper mining generates a significant byproduct known as tailings, or Cu tailings [[8], [9], [10]]. Copper tailings (CTs) constitute 36.7 % of the global annual tailings production, which amounts to 3.44 million metric tonnes [11, 12]. They contain residues of Cu and additional metals that remained unrecovered during the extraction process.
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The Visitor Experience is dedicated to educating the public about the key role Kennecott plays in modern life, safe mining practices, and responsible environmental stewardship. Learn about our history and see first-hand the gigantic scale of our operation, vehicles, and artifacts. Discover how ore gets processed and refined to become 99.99% copper, an …
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This article reviews the sources, effects and management of mine tailings, the process effluents generated in mineral processing plants. It also discusses the role …
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Publications show e.g. utilization of tungsten mine waste mud for the preparation of geopolymeric binders (Pacheco-Torgal et al., 2008), copper mine tailings use in the production of bricks through geopolymerization (Ahmari and Zhang, 2012, 2013), albite activation for the use in geopolymers (Feng et al., 2012) and sulphidic gold mine …
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2.1 Study area description and sample collection. The copper-nickel mine tailings pond was built in 1999 and is located in northern Xinjiang Province and in the eastern part of Fuyun County ().The design level of the pond capacity is grade Ⅴ and the floor area is about 1.5 × 10 5 m 2.The slag waste is disposed of by the traditional wet …
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The increasing use of copper and its allied materials across many industries is ramping up copper mining activities in many countries, and proper management and disposal of huge volumes of copper mine tailings arising thereof is a huge challenge. Sungun mine is the biggest open-cast copper mine in the northwest of Iran. …
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A novel chelating resin with bis-picolylamine functional groups is used to adsorb copper selectively from acidic wastewater and tailings. The resin shows high …
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Copper tailings reprocessing can mitigate GHG emissions and toxicity impacts in 2050. •. Tailings reprocessing can supply up to 2 % of future European …
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Future copper needs and hence, mining activities will determine the future availability of copper tailings and reprocessing potential. Three scenarios for 2050 are explored based on projected, prospective dynamic material flow analysis linked with resource scenarios of the previous studies by Ciacci et al. (2020) and Elshkaki et al. …
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most readily achieved in new mining projects and hence change in tailings management for the mining industry as a whole will be generational. For context, this chapter first describes conventional tailings management, arguing that applying NPV accounting to tailings management supports the transportation of tailings as a slurry to a facility, with
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Researchers at Chile's Pontifical Catholic University are working on a project called Tailings to Construction Materials (T2CM), which aims to transform copper tailings into high-quality ...
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The low porosity of the copper mine tailings limited the depth to which the MICP reaction could successfully occur, resulting in a 1.8 mm ± 0.4 mm crust forming around the outer extremities of the bio-columns. The results demonstrated that the particle size was a key deciding factor and that, as a result, MICP is not suitable for producing ...
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The low-grade copper sulfide mine tailings was found to be acidic with a pH of 4.5. Cation exchange capacity was determined to be 13.1 cmol/kg. The d 10, d 50, and d 90 values of the tailings particle sizes were 1.61, 16.18, and 72.4 μm, respectively. According to the particle size distribution results, it can be seen that the permeability of ...
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A new Atlas of Australian Mine Waste aims to provide industry with opportunities to extract critical metals from previously mined rock. ... cobalt in the tailings of old copper mines." ...
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Due to growing mining volumes, global tailings generation was estimated to total ~3.2 bn tons for copper and ~1.8 bn tons for iron in 2018. It is well known by the mining industry that the cost of tailings management and reclamation are significant for business profitability and long-term survival.
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Mining is an important industry, accounting for 6.9% of global GDP. However, global development promotes accelerated demand, resulting in the accumulation of hazardous waste in land, sea, and air …
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Increasing population levels, growing economies, rapid urbanization and changes in consumption patterns have increased the demand for raw materials such as base and precious metals, leading to growing concerns regarding their availability and the global efficiency of the mine supply chain. Mine tailings, consisting of process effluents …
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At the same time, a 65 m tailings High Rate Thickener (HRT) equipped with a 12 m Vane Feedwell TM was supplied by to thicken the copper tailings slurry from 32% solids (w/w) to +50% solids ...
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Large amounts of silver, copper, molybdenum, chromium, cobalt and other metals were recovered, according to Cassidy, who developed the DRAM technology some years earlier. ... Jowett, who has been working in mine tailings research in the US and Australia for more than a decade, is leading a programme at the university to catalogue …
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Biodiversity conservation threatened by global mining wastes
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The analysis in this article was enabled by MineSpans, which is a proprietary McKinsey solution that provides mining operators and investors with robust cost curves, commodity supply and demand models, and detailed bottom-up models of individual mines.. For copper, MineSpans offers mine-level data on 390 primary copper mines and 170 …
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This interdisciplinary project will bring expertise and knowledge from 13 faculty and staff in all 3 Arizona public universities to look for ways to turn Arizona's copper mine tailings …
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