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The way tailings are handled can have a long-term impact on the mines' economic efficiency, risk management and sustainability. Stacking of tailings is still unconventional compared to the wet tailings dam approach. However, it seems that tailings filtration followed by stacking is the most promising and ecological way forward.
The 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 …
It has been found that 31.25% of iron ore mine tailings dams collapsed due to slope instability, 18.75% due to overtopping, 6.25% due to liquefaction-related instabilities, 6.25% due to foundation ...
This chapter provides an overview of mine tailings and mine tailings facilities. It illustrates why and how mine tailings are produced, and the complexity involved in the long-term …
Mining 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 extracted. Therefore, rehabilitation of tailings to mitigate the negative environmental impacts is of the utmost …
Therefore, the filtered tailings used herein are termed 80/20 and were generated with moisture content values ranging from 12 to 18%. The grain size distribution of the 80/20 tailings used is highlighted in Fig. 1.Table 1 summarizes the main physical characteristics of the iron ore tailings. According to the Unified Soil Classification …
On 25 January 2019, a tailings dam at the Córrego do Feijão iron ore mine in Brumadinho, Brazil, failed suddenly without warning. Two hundred and seventy people were killed as 9.7Mm3 of stored tailings were released, with mudflow running through the Paraopeba River, demolishing infrastructure, and seriously affecting the regional …
Experts believe mine tailings could provide a new source of metals and minerals critical to the energy transition, while also cleaning up the environment. ... as the breaching of the Brumadinho dam disaster, which killed 270 people at the Vale Córrego do Feijão iron ore mine in Brazil, demonstrated in the extreme.
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.
To set the scene, we first describe the characteristics of tailings and of construction of tailings dams, and the common causes of their failure. We conclude …
Brumadinho, 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 …
Keywords: iron ore tailings, mining waste, iron oxide, technological application. 1. Introduction. ... dams since 2020 due to federal law (number 14066, enacted . on September 30, ...
The engineering properties of tailings are important for the safety evaluation and engineering design of tailing dams. In the present study, …
A discussion of tailings dam construction is found in the SME Technical Paper "An Introduction to Tailings Facilities. i " Background. What are Tailings? Tailings are a by-product of mining. After ore containing an economically-recoverable commodity is mined from the earth, that commodity is extracted in a processing plant or mill.
Tailings 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 ...
Design, and Analysis of Tailings Dams (BiTech Publishers Ltd. 1990). This is particularly true of certain concepts and organizational emphases, as well as many of the tables and figures. In some cases, this document presents a digest of Vick's overall approach to tailings dam planning and design.
On 25 January, a tailings dam at the Córrego do Feijão mine in Brumadinho, in the Minas Gerais region of Brazil collapsed, spilling 12 million cubic metres of mud and sludge. At the time of writing, 215 people were confirmed dead, with a further 91 are missing. ... The mine produced iron ore, and while it was one of Vale's smaller …
Stacked tailings have become increasingly popular in recent years as a more environmentally friendly option for tailings disposal. However, the design and assessment of stacked tailings present unique challenges due to their unprecedented heights and the wide range of factors that affect their behavior, including particle types and sizes, …
With 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 ...
In 2019, when the Brumadinho tailings dam breached at the Córrego do Feijão iron ore mine in Brazil, wiping out an entire village and killing 270 people, the world determinedly turned its attention to mine tailings facilities.. Tailings are an unfortunate, but inevitable, part of the mining process and Brumadinho was not the first – and likely …
The mining industry produces large amounts of tailings which are disposed of in deposits, which neglects their potential value and represents important economic, social and environmental risks. Consequently, implementing circular economy principles using these unconventional geomaterials may decrease the wide-ranging impacts of raw …
The heights for copper mine tailings dams that failed ranged from 5 to 140 m, with median and average heights of 32.5 and 36.2 m, respectively. We noticed a similar type of distribution in the case of iron mine tailings dam heights in which the median and average heights of the failed dams were 31 m and 41.9 m, respectively.
The intent of this paper is to provide overview context to allow broader understanding of conventional tailings dam failure mechanisms. The research leverages global knowledge, experience, and data collection and interpretation for the safe and controlled management of the geotechnical stability of a tailings storage facility. The …
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 been made to review the failure modes, mechanisms and possible solutions to enhance the stability and safety of iron ore tailings dams. A comprehensive investigation has …
Tailing storage facilities are very complex structures whose failure generally leads to catastrophic consequences in terms of casualties, serious environmental …
In order to obtain the metals and other minerals needed for industrial processes, fertilizers, homes, cars, and other consumer products, large quantities of rock are mined, crushed, pulverized, and processed to recover …
1. Introduction. ys been an important issue. Such tailings may lead to the contamination of the lith-osphere, and hydrosphere. For instance, the acid drain-age, the transfer of …
Indigenous Water and Drought Management in a Changing World. Andréa Zhouri, Walison Vasconcelos Pascoal, in Current Directions in Water Scarcity Research, 2022. Abstract On November 5, 2015, the iron ore tailings dam known as the Fundão Dam, owned by the Samarco Mining Inc. Company, a joint venture involving Vale S. A. …
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 …
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].In 2019, …