Dewatering polymer application in an iron ore tailings dam

2020 ◽  
Author(s):  
Frederic Braga ◽  
Raymond Guang ◽  
Junio Pereira ◽  
Jorge Davo
Keyword(s):  
Iron Ore ◽  
Tailings Dam ◽  
Iron Ore Tailings ◽  
Polymer Application

scholarly journals THE RIO DOCE MINING DISASTER IN BRAZIL: BETWEEN POLICIES OF REPARATION AND THE POLITICS OF AFFECTATIONS

2017 ◽  
Vol 14 (2) ◽  
Author(s):  
Andréa Zhouri ◽  
Raquel Oliveira ◽  
Marcos Zucarelli ◽  
Max Vasconcelos
Keyword(s):  
Iron Ore ◽  
The Political ◽  
Corporate Management ◽  
Tailings Dam ◽  
Way Of Life ◽  
Anthropological Perspective ◽  
Political Processes ◽  
Iron Ore Tailings ◽  
Affected Person ◽  
Doce River

Abstract This article analyses the policies of affectations in the context of the disaster which occurred in late 2015, when an iron ore tailings dam ruptured, affecting thousands of families in the Rio Doce River Valley, in the southeast of Brazil. The paper discusses the challenges faced by victims of the disaster, given that the ‘affected person’ as a social subject goes through a dramatic process of forced sociability, forged in political processes and bureaucratic demands which are alien to her/his world. As a consequence, the claims of victims are transmuted by the rationalities and techniques of corporate management, therefore disabled and re-codified by taxonomies which define forms of damage reparations, as well as modes of reconstruction of their way of life. From an anthropological perspective, we examine the struggle between the objectification imposed by the policy of affectation and the political subjectivation of actors compulsorily brought to contentious settings over the control of their own destiny.

Indonesia’s policies will drive global nickel dynamics

2019 ◽  
Keyword(s):  
Papua New Guinea ◽  
Iron Ore ◽  
New Guinea ◽  
Tailings Dam ◽  
Content Type ◽  
Iron Ore Tailings ◽  
World Supply

Significance The nickel price has surged by more than 50% this year to the highest since 2014. Supply concerns triggered the rise following the collapse of Brazil’s Brumadinho iron ore tailings dam in January, killing at least 248 people. Plunging inventories, floods in Indonesia and closure of Vale’s Onca Puma operation in Brazil have driven the price higher. Impacts Inventories are low and China’s port stockpiles cover just five months' contained nickel consumption; this will support the price globally. In August, waste from a nickel plant spilled in Papua New Guinea; environmental fears will rise worldwide and could raise costs for firms. Indonesia is allowing miners to export nickel ore, but a blanket ban on ore exports from January could hit world supply in 2020. Russia’s Nornickel is closing a smelter on environmental grounds; permafrost melt may be a greater threat to longer-term production.

Effects of reductant type on coal-based direct reduction of iron ore tailings

2018 ◽  
Vol 42 (3) ◽  
pp. 453-466
Author(s):  
Wei WANG ◽  
Pengfei YE ◽  
Xiaoli ZHOU ◽  
C WANG ◽  
Zekun HUO ◽  
...  
Keyword(s):  
Iron Ore ◽  
Direct Reduction ◽  
Iron Ore Tailings ◽  
Reduction Of Iron ◽  
Direct Reduction Of Iron

Iron ore tailings as a source of nutrients to the coastal zone

2021 ◽  
Vol 171 ◽  
pp. 112725
Author(s):  
Eduardo Schettini Costa ◽  
Renata Caiado Cagnin ◽  
Cesar Alexandro da Silva ◽  
Cybelle Menolli Longhini ◽  
Fabian Sá ◽  
...  
Keyword(s):  
Coastal Zone ◽  
Iron Ore ◽  
Iron Ore Tailings

On the effects of iron ore tailings micro/nanoparticles in embryonic and larval zebrafish (Danio rerio)

2021 ◽  
Vol 759 ◽  
pp. 143456
Author(s):  
Vítor Otacílio de Almeida ◽  
Talita Carneiro Brandão Pereira ◽  
Lilian de Souza Teodoro ◽  
Manuella Escobar ◽  
Carolina Junqueira Ordovás ◽  
...  
Keyword(s):  
Danio Rerio ◽  
Iron Ore ◽  
Larval Zebrafish ◽  
Iron Ore Tailings

Productivity and food safety of grain crops and forage species grown in iron ore tailings

2021 ◽  
pp. 104198
Author(s):  
Humberto Araújo Almeida ◽  
Janaína Guernica Silva ◽  
Isabela Goulart Custódio ◽  
Decio Karam ◽  
Queila Souza Garcia
Keyword(s):  
Food Safety ◽  
Iron Ore ◽  
Grain Crops ◽  
Iron Ore Tailings ◽  
Forage Species

scholarly journals Iron ore tailings in the production of cement tiles: a value analysis on building sustainability

2018 ◽  
Vol 18 (4) ◽  
pp. 395-412 ◽  
Author(s):  
Wanna Carvalho Fontes ◽  
Giovanni Gonçalves Fontes ◽  
Ellen Cristine Pinto Costa ◽  
Julia Castro Mendes ◽  
Guilherme Jorge Brigolini Silva ◽  
...  
Keyword(s):  
Iron Ore ◽  
Construction Material ◽  
Local Identity ◽  
Value Analysis ◽  
Social And Emotional ◽  
A Value ◽  
Iron Ore Tailings ◽  
Dissolution Tests ◽  
Technical Evaluation ◽  
The Relationship

Abstract The present work discloses the development of a sustainable cement tile (SCT) produced with Iron Ore Tailings from tailings dams (IOT). Initially, technical evaluation and environmental analysis of IOT were performed through physical, chemical and morphological characterisation, leaching and dissolution tests. Its feasibility as a pigment was also investigated. Subsequently, the value analysis was performed, starting from an empathy map to a study on environmental, social and emotional values in the relationship between people and product. As result, the IOT presented fine, crystalline particles, no toxicity, and is technically feasible to be employed as filler, aggregate and pigment in the production of SCT. The colour layer of the SCT presented more homogeneous colour and less pores than conventional ones. Therefore, the design of the SCT was developed, incorporating intangible values such as: environmental ideology, local identity and social expression. In this sense, the present work seeks to assist in the decision-making process involving IOT as construction material.

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