Fibre-optic cables can be used to monitor tailings dams. Credit: Janelle Lugge/Shutterstock. Another company deploying terrestrial monitoring systems is Mineração Morro do Ipê (MMI), a Brazilian mining company managing the Ipê and Tico-Tico mines and iron ore processing units in the Serra Azul region of Brazil.
WhatsApp: +86 18221755073Tailings dams are built gradually over time, as the mine produces more waste and hydro dams are constructed all at once. This means that safety oversight can change significantly if the mine changes operators, if the type of ore changes as the mine reaches deeper deposits, or if the mining company comes under economic pressure.
WhatsApp: +86 18221755073Out of seventeen cases of iron ore tailings dam failures, slope instability, earthquakes, and structural inadequacies were found to be the causes of the failures for six, …
WhatsApp: +86 18221755073A hybrid dam is a combination of the tailings dam types that are defined as either Downstream, Upstream or Centreline. Some tailings dams have changed construction type in the past and now are defined as 'hybrid' or 'mixed' type. In addition, some hybrid dams may incorporate waste rock materials in their structure.
WhatsApp: +86 18221755073Brumadinho, a week after the tailings dam collapse. Photo credit: Felipe Werneck/Ibama The who, the what and the why of mining waste dams Introduction. With nearly every mining operation comes a mining waste dam, or tailings dam. The first were built two centuries ago and now there are ongoing studies trying to estimate how many of them exist ...
WhatsApp: +86 18221755073With advent of novel technologies, mining companies are now figuring out ways to extract valuable metals from tailings. In gold, copper sulfide and iron ore tailings, the potential of extracting minerals is an opportunity. Reprocessing tailings to collect the valuable minerals can be a cost-effective approach compared to processing material.
WhatsApp: +86 18221755073There are two basic types of structures used to retain tailings in impoundments, the raised embankment and the retention dam. Because raised …
WhatsApp: +86 18221755073Mining 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 environments. It reached 7 billion tonnes of mine tailings generated yearly worldwide, and 19 billion solid tailings will be accumulated by 2025. Adding to this, the …
WhatsApp: +86 18221755073One of the critical challenges facing the mining sector is related to the prevention and mitigation of catastrophic incidents associated with its tailing dams. As mining tailings are very heterogeneous and field characterization …
WhatsApp: +86 18221755073Stacking compacted filtered tailings has become an option to cope with the new Brazilian regulations while providing a safe disposal method for the tailings. It has become feasible due to recent developments in dewatering technologies. Still, the dewatering processes may need to be improved to attain acceptable moisture contents considering the on-field …
WhatsApp: +86 18221755073AbstractThe 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 steelmaking slag as binder. The …
WhatsApp: +86 18221755073With advent of novel technologies, mining companies are now figuring out ways to extract valuable metals from tailings. In gold, copper sulfide and iron ore tailings, the potential of extracting ...
WhatsApp: +86 18221755073Mineral extraction is of ultimate importance for the economies of different countries, and Brazil is one of the world's leading producers of iron ores. Unfortunately, dams are still the main problem, mainly in Minas Gerais, especially after the Fundão Dam rupture in 2015. Additionally, there is still a massive presence of buildings built on earth throughout the Minas …
WhatsApp: +86 18221755073The GTR notes that mine operators must have "zero tolerance for human fatalities and strive for zero harm to people and the environment from the earliest phases of project conception.". It ...
WhatsApp: +86 18221755073Samarco and its parents argue that company executives were unaware of an imminent breach at the dam, which was also used by Vale for its own mine tailings. "The dam was always declared stable," Samarco argued, …
WhatsApp: +86 18221755073Iron 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 …
WhatsApp: +86 18221755073Information was drawn from the disclosures of publicly listed companies as part of the Mining and Tailings Safety Initiative, set up after the dam at Vale's Córrego do Feijão iron ore mine breached and killed 270 people near the town of Brumadinho in eastern Brazil. The disaster also destroyed 133 hectares of Atlantic forest and 70 hectares ...
WhatsApp: +86 18221755073The impacts of failures are severe. It is estimated that between 1961 and 2019, 2375 people lost their lives due to a tailings dam failure. In 2019, a catastrophic collapse of the tailings dam at the Córrego do Feijão iron ore mine in Brumadinho, Brazil killed more than 230 people and destroyed large sections of agricultural land.
WhatsApp: +86 18221755073(DOI: 10.1080/17480930.2022.2159295) ABSTRACT Mine tailings dams are surface impoundment structures consisting of raised embankments that are built to contain mine tailings and mill effluents. In the past, many failures of these iron ore mine tailings storage facilities/dams have been reported worldwide in different forms. In this paper, an attempt has …
WhatsApp: +86 18221755073Tailings containment dam failures cause severe environmental, social, and economic impacts. Analyzing past occurrences allows society and decision-makers to improve storage facility safety. This study presents an overview of tailings dam failures, exploring historical aspects and environmental consequences. Two methodological strategies were …
WhatsApp: +86 18221755073Tailings are a mixture of coarse-grained and fine-grained particles of ore, including crushed rock, processed water, extraction process additives, and a small amount of valuable minerals (Vick ...
WhatsApp: +86 18221755073The 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 dry …
WhatsApp: +86 18221755073The two prominent methods for mine wastes management or storage are dams and dumps, according to Blight [].Mine tailing impoundments and dam failures are very common, and many literatures have reported this [13, 14] as a cause due to the geotechnical behaviour of tailings.The Fundao dam failure in 2015 [], Brumadinho dam disaster at Corrego do Feijao …
WhatsApp: +86 18221755073Tailings are the materials left over following the processing of mined ore that separates the valuable metals or minerals from the host rock. Tailings are not the same as waste rock, the latter being soil or rock or other material that covers or surrounds an orebody and that is displaced during mining but is not processed.
WhatsApp: +86 18221755073They consist of ground rock, unrecoverable and uneconomic metals, chemicals, organic matter and effluent from the process used to extract the desired products from the ore. Tailings are stored in tailings storage facilities (TSFs). TSFs are dynamic structures that are designed and managed to contain the tailings produced by mining operations.
WhatsApp: +86 18221755073The design of sand tailings dams for tailings impoundments in highly seismic regions has been subjected to a long development process with continuous improvement mainly because of the general concern originated by several earthquake induced failures. Two important hydraulic sand fills and sand tailings dam failures in the
WhatsApp: +86 18221755073The abundance of mining activities continuously increases mine wastes/tailings that require storage/disposal. It is well understood that the accumulation of tailings around mines, and consequently, their spreading in the environment could cause serious ecological hazards. Reuse and recycling of mine tailing materials, in construction and earthwork …
WhatsApp: +86 18221755073Mining operations degrade natural ecosystems by generating a large quantity of mine tailings. Mine tailings remain in dams/open ponds without further treatment after valuable metals such as iron ore have been …
WhatsApp: +86 18221755073Iron 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 …
WhatsApp: +86 18221755073Rapid economic development and increased demand for mineral products in China have led to extensive extraction of various ores, resulting in significant environmental challenges associated with the generation of industrial solid waste, particularly iron tailings. Despite being a major mining nation, China faces issues of wasteful practices, with …
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