Chinese magmatic copper–nickel–cobalt sulfide deposit is the main source of strategic key metal resources, such as nickel, cobalt and platinum group elements in China, and it is an important deposit type with a future value that needs special attention. This type of deposit comes from the maf...
(2002). Identification and geochemical modeling of processes controlling leaching of Cr (VI) and other major elements from chromite ore processing residue. Geochimica Et Cosmochimica Acta, 66(22), 3927–3942. https://doi.org/10.3390/geos8202355 Article CAS Google Scholar Gheitasi, F., Ghammamy...
However, the fact that chromium (III) is an essential micronutrient and acts as cofactor in insulin function, the maintaining of normal glucose tolerance complicates its use. Chromite ore processing and hexavalent chromium are listed as having carcinogenic potential, while lead and zinc chromates ...
Options are removal of the coarsest fraction of ore, which has a lower Ni content, or removal of some of the minor heavier gangue minerals, such as chromite, by DMS (Kyle, 2010; Quast et al., 2015). Upgrading using flotation, gravity, electrostatic or magnetic separation only has minor ...
Through summarizing and comparing the magnesium-to-iron ratios in chromite and copper-nickel deposits associated with basic to ultramafic rocks, mafic–ultramafic rocks with a higher magnesium-iron ratio (M/F > 6.5) may form chromite ore deposits, while those with a lower magnesium-iron ratio ...
Magnetite produced during the oxidation of the concentrate (reaction3) is fluxed by SiO2and will impact the energy balance.\(\Delta\)H* of reaction4was evaluated considering an e-waste with the simplified composition (wt): 0.33Cu-0.33SiO2-0.33C. Finally, it is to be mentioned that the desi...
paint pigments and dyes. The chromium contamination is also a result of chromite ore processing, which generated large volumes of tailings and residues that have high concentrations of hexavalent chromium (Cr(VI)). These tailings and residues have been deposited as fill materials in many locations ...
An assessment and quantitative uncertainty analysis of the health risks to workers exposed to chromium contaminated soils. Millions of tons of chromite-ore processing residue have been used as fill in various locations in Northern New Jersey and elsewhere in the United States. ... DJ Paustenbach,...
These results constrain the mode of emplacement of the layered rocks, which is of particular importance in understanding the formation of the PGE reefs. Based on these data, a holistic model for the formation of the complex and its economically important PGE, chromite and magnetite mineralization ...
Many factors influence the health impact of exposure to metalliferous mine dusts and whilst the underpinning toxicology is pivotal, it is not the only driv