Sustainable risk analysis of China's overseas investment in iron ore

Huang, Jianbai; Liu, Jia; Zhang, Hongwei

doi:10.1016/j.resourpol.2020.101771

Cited by 28 publications

(8 citation statements)

References 42 publications

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“…Mining is based on the exploitation of natural resources of the main economically viable minerals and is therefore characterized by an unlimited economic supply. In this respect, we have that mining is an important axis of Brazilian economy, contributing to the creation of jobs and income, fostering the development of local infrastructure, as well as the balance in the country's trade balance (Lima & Teixeira, 2006;ANM, 2020a;Huang et al, 2020), being responsible for much of the GDP growth in Brazil and directly impacts the development of the municipalities where they are located, given the nancial compensation for the exploitation of mineral resources -CEFEM (ANM, 2020b), which in the state of Pará was R$ 444,973,850.23 in 2019 (Vale, 2020;Reichl et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Description of the IPCC mining process and analysis of the profile of productivity losses applied by a mining company in northern Brazil

Fernandes

Luz

Santos

et al. 2022

Preprint

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This work presents the description of the IPCC (In-Pit- Crushing and Conveying) mining method and analyze the profile of productivity losses of a mining company in Northern Brazil. A complete description of the IPCC mining and the measurement of the key performance indicators. The description was relevant, as it details this type of Open-Pit mining contributing to the perspective of achieving the annual production goals. Thus, we found that availability represents a greater impact in production, accounting for a total loss of -3,286,656 ton. Hence, it was possible to identify the months on which there were larger losses in ore production. There is a need to investigate the operation performance to improve the PU indicator, which directly impacted the increase in corrective maintenance of the equipment. The dataset was collected from the equipment involved in the mining stage in 2019. The result of this research will help responsible managers implement efforts directed towards the indicator that represents greater loss of productivity. The description of the innovative and operational IPCC method in a single Brazilian mine, which allows greater flow of ore in less time than the conventional method, combines with the identification of months and values of greater productivity losses.

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Section: Introductionmentioning

confidence: 99%

Description of the IPCC mining process and analysis of the profile of productivity losses applied by a mining company in northern Brazil

Fernandes

Luz

Santos

et al. 2022

Preprint

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“…Iron ore is an important resource for social construction and economic development . In recent years, China's iron ore import rate is as high as 80% (Huang et al, 2020). Shortage of iron ore resources has become a major bottleneck restricting China's iron and steel industry and economic and social development (Xu and Dong, 2013).…”

Section: Introductionmentioning

confidence: 99%

Properties of flash roasted products from low-grade refractory iron tailings and improvement method for their magnetic separation index

He¹,

Lu²,

Luukkanen³

et al. 2022

Physicochem. Probl. Miner. Process.

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The properties of flash-roasted products from low-grade refractory iron tailings (IGRIT) and the improved method for their magnetic separation index were investigated by the MLA, XRD, iron phase analysis, and magnetic separation test. The results show the siderite and hematite in the IGRIT have been converted to magnetic iron after the flash roasting treatment with a time of 3-5 s; magnetic iron in roasted products has a monomeric dissociation of 37.20%, and a 75−100% exposed area of contiguous bodies as rich intergrowth was 29.83%, and that a 32.97 poor intergrowth; moreover, magnetic iron is mainly associated with muscovite and quartz. It is also found that the regrinding-magnetic separation (1500 Oe) treatment of the middling was beneficial to obtain more qualified iron concentrate products. Therefore, roasted products magnetic separation process in the absence/ presence of the middling regrinding-magnetic separation treatment obtains an iron concentrate with 60.10%/ 60.12% iron grade and 72.04%/81.13% iron recovery. The iron concentrate from the magnetic separation process with middling regrinding-magnetic separation can have a 9% higher recovery than the process without middling regrinding-magnetic separation. The work is significant for helping to improve the utilization of IGRIT.

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“…However, iron ore in China is characterized by a low iron grade, complex mineral composition, and fine grain size of iron minerals [4,5]. For a long time, China has suffered from a shortage of iron ore supply and has heavily relied on imports [6]. Therefore, developing and utilizing refractory iron ore in China is critical for relieving the pressure on the iron ore supply as well as for providing better solutions for the global exploitation of refractory iron ores.…”

Section: Introductionmentioning

confidence: 99%

Fluidization Roasting Technology of Jingtieshan Iron Ore in the Absence of Carbon Additives

et al. 2022

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This study presents a fluidization roasting technology for siderite-bearing iron ore without the use of carbon additives. Samples of Jingtieshan iron ore were subjected to fluidization magnetization roasting, and the effects of roasting temperature, time, and N2 flow rate on the magnetic separation performance were explored. An iron concentrate with an iron grade of 57.40% and recovery of 91.17% was acquired at a roasting temperature of 700 °C, roasting time of 10.0 min, an N2 flow rate of 600 mL/min, grinding particle size of −125 μm, and constant magnetic intensity of 99.47 kA/m. The samples were characterized by X-ray diffraction, optical microscopy, scanning electron microscopy–energy dispersive spectroscopy, and vibrating sample magnetometry. The results revealed that hematite and goethite were reduced to magnetite by the CO generated during siderite decomposition; meanwhile, siderite was transformed into magnetite with the consumption of CO during the reduction process. The saturation magnetization of the roasted ore significantly increased owing to the formation of ferrimagnetic magnetite, which was easily recovered in the subsequent magnetic separation.

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Sustainable risk analysis of China's overseas investment in iron ore

Cited by 28 publications

References 42 publications

Description of the IPCC mining process and analysis of the profile of productivity losses applied by a mining company in northern Brazil

Description of the IPCC mining process and analysis of the profile of productivity losses applied by a mining company in northern Brazil

Properties of flash roasted products from low-grade refractory iron tailings and improvement method for their magnetic separation index

Fluidization Roasting Technology of Jingtieshan Iron Ore in the Absence of Carbon Additives

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