Hematite Tailings In Brazil

Main chemical and mineralogical components of the Rio …

Since the Fundão Dam rupture in Southeastern Brazil caused an enormous amount of iron ore tailing (IOT) to be discharged into the Doce River Catchment, various works have been published on the soil, water, and biota contamination by potentially hazardous trace metals.

Mineralogical fingerprint and human health risk from …

Iron mining tailings from the Fundão dam are a source of As in affected ecosystems. Goethite is the primary source of contaminants in the Fe mining tailings. Goethite Al-substitution shows a positive correlation with PTE concentration. Carcinogenic risk above the acceptable value for As, Cr, and Ni in children.

Tracing iron ore tailings in the marine environment: An investigation

This work aims to characterize, in mineral and chemical terms, the ore tailings related to the Mariana disaster (MG, Brazil), occurred on 5 November 2015, and assess its correlation with sediments found in the continental shelf adjacent to the Doce River mouth (ES, Brazil). This study uses samples of tailings and seabed sediments collected at ...

Iron Ore Tailings: Characterization and …

Currently, approximately 1.4 billion tons per year of iron ore tailing wastes (IOT) are generated, mainly in Australia, Brazil, and China. This work describes the characterization and application...

Tailings from Fundão Tragedy: Physical-Chemical Properties …

In this work, samples of Fe mining tailings from the collapsed Fundão Dam, Brazil, which were retained by the Candonga hydroelectric power plant, were characterized by various techniques. Quartz, hematite, kaolinite, and goethite were identified as the main phases present.

Iron Ore Tailings: Characterization and Applications

Iron is the fourth most abundant element and accounts for about 5% of the Earth's crust. Commonly found in the form of ore, iron has been used for over four thousand years in the fabrication of tools and weapons. Iron ore is an essential part of the manufacture of steel and it is difficult …

Compressive strength, durability, and resilient modulus of …

This study analyzed the geotechnical properties of Magnetite and Hematite iron ore tailings (MIOT, HIOT) from the Golgohar mine in Sirjan, Iran. Two IOTs were compacted using the Standard Proctor technique after being treated with 5, 7, and 9 % Portland cement. ... As a way to decrease the likelihood of dam failure and tailings runout, Brazil ...

Preparation of eco-friendly construction bricks from hematite tailings

The main disadvantage of the hematite tailings in producing bricks is the presence of excessive iron and less silica. On the contrary, common clay and fly ash usually contain high amounts of silica and aluminum, moreover clay and fly ash often have lower bulk density and are confirmed as good raw materials for making bricks [16], [17].Adding clay and fly ash to the raw …

Mineralogical Characterization of Iron Ore Tailings …

The flotation tailings samples from different regions of Quadrilatero Ferrifero, present different characteristics of size, grain shape and distribution of mineral phases, although they are composed mostly by hematite/magnetite and quartz.

Mineralogical Fingerprint of Iron Ore Tailings in Paraopeba …

The study presents SEM-based automated mineralogy to distinguish between natural sediments and iron ore tailings deposits from the Paraopeba River, after the failure of B1 Dam in Brumadinho, Minas Gerais, Brazil.

The 7 December 2024 mine waste landslide at Turmalina Mine

The location of the Turmalina landslide is [-19.74311, -44.87817]. The tailings stack is visible in Google Earth, and an image from October 2022 shows that the tailings stack was …

Iron Ore Tailings: Characterization and Applications

Currently, approximately 1.4 billion tons per year of iron ore tailing wastes (IOT) are generated, mainly in Australia, Brazil, and China. This work describes the characterization and application...

Iron Ore Tailings: Characterization and Applications

The tests revealed that the predominant phases are hematite and quartz and, to a lesser extent, goethite, gibbsite and kaolinite. ... .2,26 Figure 3. Amount of iron ore tailings generated annually in different countries. In Brazil, around 95% of mining tailings are destined to 672 containment dams,8,27 340 of them are located in the State of ...

Main chemical and mineralogical components of the Rio …

Since the Fundão Dam rupture in Southeastern Brazil caused an enormous amount of iron ore tailing (IOT) to be discharged into the Doce River Catchment, various works have …

Hematite tailings to high-purity silica: Mechanistic studies …

The hematite tailings (HTs) used in this study were sourced from a mining plant in southern China. ... An economic investigation of the dengue incidence as a result of a tailings dam accident in Brazil. J Environ Manage, 253 (2020), Article 109748. View PDF View article View in Scopus Google Scholar. Okewale and Grobler, 2023. I.A. Okewale, H ...

Mineralogical fingerprint and human health risk from …

Iron mining tailings from the Fundão dam are a source of As in affected ecosystems. Goethite is the primary source of contaminants in the Fe mining tailings. Goethite …

Mine tailings in a redox-active environment: Iron …

The present study aimed to evaluate geochemical changes in Fe-rich tailings after the world's largest mining disaster in SE Brazil (in 2015) and to predict the potential environmental implications for the estuary. The mineralogical characteristics of the tailings were studied at three different times (2015, 2107, and 2019) to assess how an ...

Mineralogical Fingerprint of Iron Ore Tailings in …

Compressive strength, durability, and resilient modulus of …

Indeed, rare incidents like the failures of tailing dams can have severe repercussions, as evidenced by the devastating outcomes of Mariana and Brumadinho failures in 2015 and 2019 respectively [12], [13]. As a way to decrease the likelihood of dam failure and tailings runout, Brazil is considering the adoption of dry stack tailings [14].

Simplified hydrometallurgical route for the synthesis of silica …

The iron mining industry, generates millions of tons of tailings, which pose significant threats to the environment and to society. In Brazil, the Quadrilátero Ferrífero (MG) concentrates a large amount of iron ore tailings (IOT) from the processing of itabiritic ores, with 180 million metric tons of waste disposed of annualy in dams or dry stacking structures.

(PDF) Wet High-Intensity Magnetic Separators (WHIMS) for …

The dominant crystalline phases in these tailings were quartz, albite, talc, hematite, and calcite. The line feed is 45 microns, which is not suitable for the gravity method. ... Brazil. The tailings were composed of the slurry thickener underflow and the tailings from the flotation stage of ore processing. The particle sizes were analyzed by ...

Tailings from Fundão Tragedy: Physical–Chemical Properties …

Our study characterizes Fe tailings deposited near the Candonga hydroelectric power plant dam, in Doce River (Minas Gerais, Brazil). The material analyzed presents good homogeneity and its main phases are quartz, hematite, kaolinite, and goethite.

Mineralogical Characterization of Iron Ore Tailings from …

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In Brazil, there is a considerable amount of hematite ore tailings without practical use, which makes this material an environmental problem and a matter of public safety. Thus, the search for alternatives to use these tailings …

Iron Ore Tailings: Characterization and Applications

In Brazil, the two most important iron ore types are hematite rich and itabirite (banded iron formations (BIF)). Hematite rich type is extracted mainly in the state of Pará and has an average iron content higher than 60%. ... In Brazil, around 95% of mining tailings are destined to 672 containment dams, 8, 27 340 of them are located in the ...

APPLICATION OF COLLOIDAL MAGNETIC COATING IN …

typical characteristics of from the Brazilian Iron Quadrangle slimes with an iron content of 42.06%, silica of 24.28% and high values of alumina, phosphorus and manganese oxide. The source of iron is hematite and goethite and alumina comes from kaolinite. The P95 of the ultrafine tailings is close to 0.075mm and the passer at