Results 31 to 40 of about 33,129 (274)
Chromite Mining Cooperatives, Tribute Mining Contracts, and Rural Livelihoods in Zimbabwe, 1985–2021
Revue Internationale de Politique de Développement, 2023 Transnational corporations dominated chromite mining in Zimbabwe for the entire colonial period. However, the postcolonial period witnessed a gradual but significant shift toward small-scale and artisanal mining as liberalisation led to the ...
Joseph Mujere
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Geochemical Transactions, 2011 Chromite is a mineral with low solubility and is thus resistant to dissolution. The exception is when manganese oxides are available, since they are the only known naturally occurring oxidants for chromite.
Broman Curt +2 more
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Sodium Silicate Cold-Bonded Chromite Pellets for the Ferrochromium Industry – Identifying a Suitable Process [PDF]
Materials Research, 2020 Chromite fines (defined as particles smaller than 6 mm) account for a significant fraction of mined South African chromite ore. These fines are pelletized to allow safe furnace smelting conditions.
S.P. du Preez, Z. Maree, J.P. Beukes
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A Raman spectroscopy study of the oxidation processes in synthetic chromite FeCr2O4
, 2020 A crystal of synthetic chromite FeCr2O4 has been annealed in air at 700 °C for 50 days at room pressure in order to study physical-chemical changes. After the annealing treatment, Scanning Electron Microscopy (SEM) images of the polished surface of the ...
V. Lughi +5 more
semanticscholar +1 more source
Journal of Hazardous Materials, 2020 The microstructure of Chromite Ore Processing Residue (COPR) derived from the soda ash roasting process was investigated prior to and after removal of water exchangeable chromate using a host of microscopy and spectroscopy techniques.
Yaguang Du, M. Chrysochoou
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Effects of mechanical activation on the carbothermal reduction of chromite with metallurgical coke
Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2010 The carbothermal reduction of mechanically activated chromite with metallurgical coke under an argon atmosphere was investigated at temperatures between 1100 and 1400°C and the effects of the mechanical activation on chromite structure were analyzed by x-
Kenan Yıldız
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The role of magnetic anisotropy in spin filter junctions
, 2011 We have fabricated oxide based spin filter junctions in which we demonstrate that magnetic anisotropy can be used to tune the transport behavior of spin filter junctions.
Arenholz, E. +5 more
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Widespread abiotic methane in chromitites [PDF]
, 2018 Recurring discoveries of abiotic methane in gas seeps and springs in ophiolites and peridotite massifs worldwide raised the question of where, in which rocks, methane was generated.
Etiope, G. +8 more
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Carbothermal reduction kinetics of mechanically activated chromite with graphite
Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2011 The carbothermal reduction kinetics of mechanically activated chromite with graphite under an argon atmosphere was investigated at temperatures between 1100 and 1400°C.
Kenan Yıldız
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Geologica Acta, 2023 The mantle rocks from Kadaboura and Madara areas represent sections of dismembered ophiolitic complexes developed during the Neoproterozoic in the Eastern Desert of Egypt, which is located in the northwestern corner of the Arabian–Nubian Shield.
Shehata Ali +2 more
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