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Une expérience de recherche-intervention dans une entreprise d’exploitation minière : défis et possibilités
Published 2020-12-01“…In this article, the preliminary results of an intervention research in an iron ore extraction company are discussed. The company required the individual development of cable excavator operators in order to increase their productivity. …”
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62
Productions, commerces et consommation du fer dans le Sud de la Gaule de la Protohistoire à la domination romaine
Published 2014-12-01“…BC to the Roman Empire power, and focuses on four main issues: the importance of iron in the material culture of the different societies, the size of forge activities developed in the settlements, which exploitation strategies of iron ore deposits are used, and finally what networks and trade standards of wholesale iron are developed in the South of Gaul, from Protohistory to the Roman Empire ?…”
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63
Study on the Mixed Materials Proportion of Stratum Based on the Modelling Experiment
Published 2021-01-01“…The mixed materials are used to simulate the stratum of the model test, including the iron ore powder, natural sands, gypsum, and lime. The stratum contains silty clay and silt soil. …”
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64
Efeitos permanentes da poluição oriunda da ruptura da barragem da empresa Samarco em Mariana (Minas Gerais) sobre a planície costeira do Rio Doce, Espírito Santo
Published 2024-08-01“…The article problematizes the effects, eight years later, on the coastal plain of the Rio Doce in Espírito Santo, Brazil, of waste from mining carried out upstream of the river in Mariana, Minas Gerais, by the Samarco-Vale-BHP Billiton corporation. The rupture of the iron ore mine dam in 2015 caused permanent pollution in this region. …”
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65
New development cycle through long-term investment ?
Published 2011-09-01“…Within the wide range of Sino–Gabonese co-operation, the mining sector – and above all the Bélinga iron ore project – is central to both parties’ interests. …”
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66
MINERALOGY OF BLOOMERY SLAGS OF THE SHUVAKISH IRONWORKS PLANT (OUTSKIRTS OF YEKATERINBURG, SVERDLOVSK OBLAST)
Published 2021-03-01“…The Shuvakish plant was supplied with marsh iron ore, which was most likely extracted in the nearest Moleben swamp located to the north from the plant.…”
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67
La station de Bergusium et le site des Buissières à Panossas (Isère) : de la toponymie à l’archéologie
Published 2016-12-01“…Reinforced by the pattern of names in Transalpine and Cisalpine Gaul, this hypothesis would fit well with Briançon, which represents the region’s main Oolitic iron ore deposit. Backed by its eastern foothills, the site of Buissières in Panossas suggests other archaeological arguments to that effect. …”
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68
Short-Term Forecasting of Global Energy and Metal Prices: VAR and VECM Approaches
Published 2022-12-01“…This study introduces a set of multivariate models with the aim of forecasting global prices of 1) crude oil, 2) natural gas, 3) iron ore, and 4) steel. Various versions of vector autoregression and error-correction models are applied to monthly data for the short-term prediction of nominal commodity prices six months ahead, and to examine forecast accuracy. …”
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69
Preparation and Properties of Agricultural Residuals-Iron Concentrate Pellets
Published 2017-01-01“…In this paper, carbon-containing pellets were prepared by using crop-derived charcoal made from agricultural residuals and iron ore concentrates, and their pelletizing performance and properties were studied. …”
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70
Preparation of strontium hexaferrite magnets from celestite and blue dust by mechanochemical route
Published 2008-01-01“…In the present investigation celestite (natural ore of strontium) and blue dust (iron ore fines) have been used for the preparation of strontium hexaferrite powder. …”
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71
Effect of B2O3 Content on the Sintering Basic Characteristics of Mixed Ore Powder of Vanadium-Titanium Magnetite and Hematite
Published 2020-01-01“…The sintering basic characteristics of iron ore play a key role in the process of sintering. …”
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72
STUDY ON LOAD MEASURING METHOD AND TEST OF THE PIN-SHAFT IN LOADER WORKING DEVICE
Published 2017-01-01“…Primary soil containing granular iron ore was chosen as the shovel loading operation case,and the dynamic forces in three directions of the pin-shaft linking the arm and the bucket were acquired through the shovel loading test. …”
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73
Arsenic, Chromium, and Other Potentially Toxic Elements in the Rocks and Sediments of Oropos-Kalamos Basin, Attica, Greece
Published 2014-01-01“…The results of this study imply the natural source of Cr3+ and Cr6+ contamination of the Oropos-Kalamos groundwater, since high Cr contents were also recorded in the lignite (212.3 mg kg−1), chromiferous iron ore occurrences (256.6 mg kg−1), and alluvial deposits (212.5 mg kg−1), indicating Cr leaching and transportation to the depositional basin dating from the Upper Miocene age.…”
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74
L’agglomération secondaire de Famars/Fanum Martis (Nord) durant l’Antiquité tardive : d’un pôle commercial au centre militaire
Published 2017-12-01“…The presence of considerable amounts of raw material (clay deposits, sandstone and iron ore) has enabled its development from the end of the 1st c. …”
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75
Deflection-Based Numerical Evaluation of Steel, Bamboo Fibre, and Carbon Fibre Polymer Reinforced Portal Frame
Published 2024-06-01“…The extensive mining of iron ore contributes to global warming, prompting the quest for greener alternatives. …”
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76
Study on the Effect of Flocculation and Sedimentation on the Mechanical Properties of Iron Tailing Sand
Published 2022-01-01“…To improve the settling effect of tailings accumulation in the Chengchao iron ore mine (China), the effect of iron tailings flocculation and settling law on the mechanical properties of tailings sand was studied. …”
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77
Techniques for Suppressing Mineral Dust Aerosol from Raw Material Stockpiles and Open Pit Mines: A Review
Published 2023-12-01“…In conventional stockpiles, the tendency to produce mineral dust is higher in coal and coke than in other material aggregates such as limestone, gypsum, iron ore, magnetite, and bauxite. Industries with notable mineral dust production capture and suppress dust using dry and wet techniques to curb nuisance and attain air quality regulations. …”
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78
The Effect of Reynolds Number on Jet in Asymmetric Co-Flows: A CFD Study
Published 2018-01-01“…In rotary kilns in grate-kiln systems for iron ore pelletizing, a long and stable jet flame is needed to ensure a high quality of the pellets. …”
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79
Mechanical characteristics of roll crushing of ore materials based on discrete element method
Published 2025-01-01“…Therefore, this paper intends to use the discrete element method to study the mechanical characteristics of roll crushing of ore materials. Firstly, the iron ore breakage model parameters are calibrated according to compression and impact crushing tests. …”
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80
Gasification Reaction Characteristics between Biochar and CO2 as well as the Influence on Sintering Process
Published 2017-01-01“…For achieving green production of iron ore sintering, it is significant to substitute biochar, which is a clean and renewable energy, for fossil fuels. …”
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