How to reshape the future of tailings?
Mining involves processing of mined ore to capture valuable minerals, which in turn produces large volumes of tailings. The annual global tailings production is currently estimated to be at the range of 10-12 billion tons/annum and increasing. Therefore, it's important to reshape tailings management and accelerate the positive change.
Minerals | Free Full-Text | Recovering Iron from Iron Ore Tailings …
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 …
Advanced analysis of satellite data reveals ground deformation
Catastrophic failure of a tailings dam at an iron ore mine complex in Brumadinho, Brazil, on 25th January 2019 released 11.7 million m3 of tailings downstream. Although reportedly monitored using ...
A Critical Review on Potential Use of Iron Ore Tailings as …
Mine tailings impoundments produced during beneficiation and extraction of iron ores create environmental threat and are disposed at high monetary and ecological …
Controlling the rheology of iron ore slurries and tailings with …
A method of reducing concentrated tailings viscosity and yield stress for ease of pumping and them improved the safety of tailings storage in dam and a method of …
An insight into failure of iron ore mine tailings dams
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 …
MINE TAILINGS FACILITIES: OVERVIEW AND INDUSTRY …
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 …
Brumadinho dam collapse: The danger emerged after the …
The tailings pond was built in 1976. Over the following years, the pond's earth dam was raised several times by a few metres, as is customary in ore mining, to create additional space for the storage of processing residues. The dam's steps were placed with an offset on top of each other, much like the steps of a staircase (upstream …
Brumadinho dam collapse: The danger emerged after the
The tailings pond was built in 1976. Over the following years, the pond's earth dam was raised several times by a few meters, as is customary in ore mining, to create additional space for the ...
Time to talk about tailings dams
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 Brumadinho dam failure in Brazil is a human and environmental …
The 2019 Brumadinho tailings dam collapse: Possible …
After 3 years of the Mariana tragedy, on 25th January 2019, another mining dam consisting of iron ore tailings failed catastrophically in the Brumadinho city, Minas Gerais State, Brazil. The rupture produced more than 11 × 10 6 m 3 of mining waste – equivalent to a 10-m high wave of mud that spread 10 km the downhill – that reached the ...
Brumadinho dam collapse: The danger emerged after the …
The disaster near the small town of Brumadinho in southeastern Brazil occurred shortly after midday on 25 January 2019. At a nearby iron ore mine, the tailings dam—a storage area for the sludgy ...
The Experimental Characterization of Iron Ore Tailings from …
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 …
Tailings Dams: Where Mining Waste is Stored Forever | FRONTLINE …
Kolontár, Hungary: In 2010, a tailings dam storing waste from bauxite mining collapsed due to heavy rain. The red toxic sludge from the dam spread over eight square km (more than three square ...
Investor group turns up heat on mining tailings dam laggards
Tailings dams are embankments constructed near mines to store waste in a liquid or solid form. But 126 companies, many of them smaller, have yet to commit to the standard, leaving their ...
Geotechnical Properties of Mine Tailings | Journal of …
The engineering properties of tailings are important for the safety evaluation and engineering design of tailing dams. In the present study, laboratory experiments were …
Advanced monitoring of tailings dam performance using …
Tailings dams, designed to retain the waste by-products of mining, are among some of the largest engineered structures in the world 5; there are an estimated 8100 tailings facilities worldwide 4.
Technical Report: Design and Evaluation of Tailings Dams | US EPA
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, … See more
Tailings Dam
Samarco is world's second-largest iron ore mine with estimated reserves at 2.97 billion tons, and initial production of 19 million tons per year. The mine-tailing dam disaster on November 5, 2015, caused a huge mudslide that killed 19 people, polluted nearby Doce River, and devastated livelihoods.
Dry Stacking of Filtered Iron Ore Tailings: Comparing On …
Stacking 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 …
Best Practices for Tailings Dam Design – KCB
Tailings dam design should be based on a complete understanding of the foundation geology and soils, through …
How to generate value from tailings with reprocessing to
A standard method of reprocessing involves dragging tailings from an existing dam back to the concentrator and using required mineral processing solutions to liberate the valuable metals. The ...
A critical review on metallurgical recovery of iron from iron ore tailings
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, …
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 …
An insight into failure of iron ore mine tailings dams
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 …
What are tailings dams? | IndustriALL
Tailings are the waste products from mining. Mechanical and chemical processes are used to grind up rock into a fine sand to extract the valuable mineral or metal from the rock ore. All the unrecoverable and uneconomic remnants from this process are waste. They include finely ground rock particles, chemicals, minerals and water.
Ecological engineering of iron ore tailings into useable soils …
Introduction. Billions of tons of mine tailings are generated annually from extracting and processing of metal and mineral ores, 1, 2, 3 stockpiled in about 4,800 mine tailings storage facilities (TSFs), 4 occupying >240,000 ha of land worldwide. 4 Iron (Fe) ore tailings are one of the most challenging global tailings liability, 5 with over 1.4 billion …
Preventing catastrophic tailings dam failures to save lives …
In January 2019, the Brumadinho tailings dam, at an iron ore mine in Brazil, suffered a catastrophic failure, releasing 12 million cubic metres of toxic tailings. The mudflow obliterated the mine's offices and cafeteria and all the farms and houses in its path. It killed over 250 people and, according to Brazil's National Water Agency ...
Iron ore tailings dry stacking in Pau Branco mine, Brazil
The tailings dam of the Córrego do Feijão iron mine in Brazil broke on 25 January 2019, with a dam breaking volume of 12 million m 3, causing more than 230 deaths and serious environmental ...
An extensive review on restoration technologies for mining tailings
Development of mineral resources and the increasing mining waste emissions have created a series of environmental and health-related issues. Nowadays, the ecological restoration of mining tailings has become one of the urgent tasks for mine workers and environmental engineers all over the world. Aim of the present paper is to …