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Techno-economic feasibility of a preoxidation process to enhance prereduction of chromite
(SAIMM, 2017)
Ferrochrome (FeCr) is vital for the production of stainless and high-alloy
ferritic steels, since it is the only source of new Cr units. FeCr production is
an energy-intensive process. The pelletized chromite prereduction ...
Comparison of physical properties of oxidative sintered pellets produced with UG2 or metallurgicalgrade South African chromite: a case study
(SAIMM, 2015)
The physical properties of oxidative sintered pellets produced from typical
South African UG2 ore are compared with the physical properties of pellets
produced with conventional South African metallurgical-grade chromite
ore ...
Aqueous solubility of Cr(VI) compounds in ferrochrome bag filter dust and the implications thereof
(WRC, 2017)
The production of ferrochrome (FeCr) is a reducing process. However, it is impossible to completely exclude oxygen from all of the high-temperature production process steps, which may lead to unintentional formation of ...
The sensitivity of Afromontane tarns in the Maloti-Drakensberg region of South Africa and Lesotho to acidic deposition
(Taylor & Francis, 2016)
Despite their remoteness from sources of atmospheric pollutant emissions, the Afromontane tarns in the Maloti-
Drakensberg region are perfect candidates to study the negative effects of acidifying atmospheric pollution,
because ...
South African EUCAARI measurements: seasonal variation of trace gases and aerosol optical properties
(EGU, 2012)
In this paper we introduce new in situ observations of atmospheric aerosols, especially chemical composition, physical and optical properties, on the eastern brink of the heavily polluted Highveld area in South Africa. ...
Silicon carbide formation enhanced by in-situ- formed silicon nitride: an approach to capture thermal energy of co-rich off-gas combustion
(Springer, 2018)
Carbothermic smelting of ores to produce metals or alloys in alternating current open/semiclosed and closed submerged arc furnaces, or in closed direct current furnaces, results in large volumes of CO-rich off-gas being ...
Statistical exploration of gaseous elemental mercury (GEM) measured at Cape Point from 2007 to 2011
(EGU, 2015)
The authors evaluated continuous high-resolution gaseous elemental mercury (GEM) data from the Cape Point Global Atmosphere Watch (CPT GAW) station with different statistical analysis techniques. GEM data were evaluated ...
Utilisation of pre-oxidised ore in the pelletised chromite pre-reduction process
(Elsevier, 2016)
Ferrochromium is a vital alloy mostly used for the production of stainless steel. It is produced from chromite
ore, the only economically exploitable natural chromium resource, through carbothermic smelting
in submerged ...
Cr(VI) and conductivity as Indicators of surface water pollution from ferrochrome production in South Africa: four case studies
(Springer, 2015)
South Africa is one of the largest ferrochromium (FeCr) producers. Most FeCr is exported to
developed countries. Therefore the impact of this industry is of national and international
importance. Cr(VI) and conductivity ...
Characterization of satellite-based proxies for estimating nucleation mode particles over South Africa
(EGU, 2015)
Proxies for estimating nucleation mode number
concentrations and further simplification for their use with
satellite data have been presented in Kulmala et al. (2011). In
this paper we discuss the underlying assumptions ...