iron ore tailings dams

Disclosure on Tailings Dams

2019-6-11 · • Vale''s upstream iron ore dam de-characterization plan was prepared in 2014 • In 2018, 20 dams were de-characterized, including: the Athayde dam in the Capanema mine, the Ingleses dike in the Gongo Soco mine, the Pera dike in the Del Rey mine, the 10- dam in the S11D mine, the Fazendão Lavra Azul mine.

Learn more about Vale''s dams

2022-1-1 · Learn more about the types of dams. When a dam is built, it is for the purpose to contain tailings. This is the starter dam. As more tailings are deposited, new layers are added to the starter dam (this is called the upstream construction method). There are different types of construction methods. The main ones used by Vale are: the downstream ...

Using Iron Ore Tailings from Tailing Dams as Road …

Iron ore tailings (IOT) from tailings dams cause significant environmental, economic, and social impacts, which has motivated the search for reuse alternatives. In this scenario, the present work ...

Vale produces sand from iron ore tailings

2021-11-30 · Vale has produced around 250,000 tons of sand from its iron ore tailings at its Brucutu Mine in Minas Gerais, which will be sold or donated to be used in concrete, mortar, cement, and road pavement. The company has spent seven years and about 50 million Brazilian reais (US$8.8 million) in investment and research for the process.

Tracing iron ore tailings in the marine environment: An ...

2020-10-1 · 1. Introduction. The exploitation of iron ore requires the construction of dams to dispose of waste after processing it. This residual material is called tailings and the specific physical-chemical characteristics depend on the beneficiation process adopted and vary depending on the main constituents and the presence of trace elements and residual organic …

Tailings

Iron ore, one of the most abundant metals on Earth, is the primary raw material used to make steel. Operations. ... The tailings are then discharged into the dam and as the embankment is raised, the new wall is constructed and supported on top of the downstream slope of the previous section. This shifts the centreline of the top of the dam.

A mining disaster could spell the end of an iron ore giant ...

Dewatering polymer application in an iron ore tailings dam

On the effects of iron ore tailings micro/nanoparticles in ...

Iron ore tailings (IOT) represent a major problem in the mining industry worldwide due to large volumes of waste disposed in mine sites. IOT are exposed to the environment and subjected to wind and water dispersion, even under non-catastrophic scenarios as dam collapses, and the effects of these particles to the biota are still mostly unknown.

Dewatering Polymer Application in an Iron Ore Tailings …

1 Dewatering Polymer Application in an Iron Ore Tailings Dam Frederic Braga 1*, Raymond Guang 2, Junio Pereira 1, Jorge Davo 3, Felipe Ferrari1, Thales Nicoli1, Lois Boxill3 and José Russo 1 1. Anglo American, Brazil 2. Golder, Canada. 3. BASF, Brazil and Canada

Tailings dam disaster: What happened at Brumadinho – M …

2020-8-18 · Tailings dam disaster: What happened at Brumadinho. The Brumadinho dam disaster occurred on 25 January 2019 when Dam I, a tailings dam at the Córrego do Feijão iron ore mine, 9 kilometres east of Brumadinho, Minas Gerais, Brazil, suffered a catastrophic failure. The dam is owned by Vale, the same company that was involved in the 2015 Mariana ...

Iron Ore Tailings: Characterization and Applications

2021-7-26 · killed 19 people. 29-31 Another serious iron ore tailings dam break occurred in 2019, in the city of Brumadinho (Minas Gerais, Barragem do Feijão). This accident killed 257 people and caused untold environmental impacts. At least 12 million m3 of ore tailings have been spread around the Paraopeba river.19,32 2. Physicochemical Characterization ...

Mortars for laying and coating produced with iron ore ...

2016-6-1 · The use of iron ore tailings from tailing dams as aggregate or filler will help reduce the exploitation of natural aggregates in deposits, as will contribute to the mitigation of environmental impacts of waste disposal. The use of IOT ultimately collaborates to the sustainability of construction and of all activities related to its supply chain.

Iron ore | BHP

Samarco Mineracao S.A. (Samarco) is a non-operated joint venture iron ore operation. BHP Billiton Brasil and Vale each hold a 50% shareholding in Samarco. Following the Fundão dam failure in 2015, operations at the iron ore operation have resumed without the need of tailings dams and with a new, safer filtration system.

Recovery of pellet feed from tailings dams

This study presents the results of magnetic concentration tests carried out on samples from four iron ore tailings dams located in Minas Gerais, named as A, B, C and D. The average iron content is 54% for A dam, 36% for B dam, 49% for C dam, and 58% for D dam. This material had a significant amount of ultra-fine particles, with more than 50% ...

Managing Mine Tailings Dams Safely | Anglo American

2019-6-7 · Our definition. Tailings storage facilities (TSF) play a major role in many mining operations around the world. A TSF is a highly engineered structure which consists of one or more tailings dams, with embankments designed to permanently store the tailings. Every individual dam is unique and is designed, built and operated to specifications that ...

Iron-ore Tailings dams'' disasters – A review

2021-5-28 · Iron-ore Tailings dams'' disasters – A review Kaushika Hazarika, Gemini Senanayake a. Metallurgical Improvement Department, Roy Hill, 5 Whitham Rd, Perth Airport, WA 6105 b. College of Science, Health, Engineering and Education, Murdoch University, 90 South Street, Murdoch, WA 6150, Australia

Samarco dam disaster: dealing with the fallout of a tragedy

2018-7-30 · For Samarco, the operator of the Germano iron ore mine and its defective tailings dams, as well as Samarco''s joint venture owners BHP and Vale, those two and a half years have been marked by a dogged and ongoing legal …

Using Iron Ore Tailings from Tailing Dams as Road …

The 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.

Communities resist Chinese mining company''s iron ore ...

2019-12-18 · Communities resist Chinese mining company''s iron ore tailings dam. Bloco 8, one of Brazil''s biggest iron ore waste dams, is challenged over …

Brazilian iron ore mines move toward dry stacking as ...

Iron ore sales volumes by Mineração Usiminas totaled 759,000 tonnes in the domestic market during 2018; 3.27 million tonnes in exports; and 2.44 million tonnes used in the output of its own steel products. Its facilities comprise three tailings dams – two upstream ones, both already inactive, and a downstream one.

Dewatering polymer application in an iron ore tailings dam

Abstract: Given the current scenario experienced by Brazilian mining industry, the study and development of technologies that enable a more secure and controlled disposal of tailings has gained significant relevance. Among the various alternatives and disposal methodologies, Anglo American has been developing tests on different study fronts. Using dewatering polymers to …

What are the iron ore tailings application technology ...

2021-10-15 · iron tailings are distinguished on the basis of their primary elements, which facilitate the selection of different ways of use. Generally, they are divided into four types: 1. Anshan high-silicon iron tailings. This type of iron tailings is the largest type of iron tailings, with high silicon content, and some SiO2 content is as high as 75%.

Reverse logistics system applied to the reuse of iron ore ...

Iron ore tailings (IOT) from tailings dams cause significant environmental, economic, and social impacts, which has motivated the search for reuse alternatives. In this scenario, the present work uses reverse logistics to size the resources required to reuse the …

Comprehensive reutilization of iron in iron ore tailings ...

2020-6-23 · A large number of iron ore tailings (IOTs) are produced in steel industry, posing threat to the environment during its storage and disposal. To effectively reutilize Fe in IOTs, we propose a comprehensive utilization scheme: (1) most Fe in IOTs is extracted by concentrated hydrochloric acid to form FeCl 3 flocculants; (2) after separation from the FeCl 3 flocculants, a …

Reverse logistics system applied to the reuse of iron ore ...

2021-6-10 · Iron ore tailings (IOT) from tailings dams cause significant environmental, economic, and social impacts, which has motivated the search for reuse alternatives. In this scenario, the present work uses reverse logistics to size the resources required to …

(PDF) Iron Ore Tailings: Characterization and Applications

2022-1-3 · iron ore tailings (IOT) are generated, i.e., a coarse tailing, generated in the otation stage, consisting mainly of quartz, and a ne tailing, whose main components are …

Vale ordered to shut 25 iron ore tailings dams in Brazil ...

2020-4-4 · Vale ordered to shut 25 iron ore tailings dams in Brazil. Sao Paulo — Brazil''s National Mining Agency has ordered the immediate closure of 47 iron ore tailings dams for which stability was not certified, with more than half of them owned by iron ore giant Vale and its affiliates.

Mineralogical Characterization of Iron Ore Tailings from ...

From the analyzed materials, the tailings reached 93.35% quartz (SiO 2) and 6.20% hematite (Fe 2 O 3), after processing. It was the material which presented the best potential use as base sand for the foundry industry. Fontes, Mendes, Silva and Peixoto (2016) used iron ore dam tailings as a raw material for the production of mortars and coatings.