Browsing Faculty of Natural and Agricultural Sciences by Author "Dawson, N.F."
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Characterisation and liberation of chromium from fine ferrochrome waste materials
Van Staden, Y.; Beukes, J.P.; Van Zyl, P.G.; Dawson, N.F.; Du Toit, J.S. (Elsevier, 2014)Three types of generic chromium (Cr)-containing wastes are generated during ferrochrome (FeCr) production, i.e. slag, bag filter dust (BFD) and venturi sludge. Slag is by volume the largest waste; however, fine FeCr waste ... -
The influence of CaC03 addition and clay binder selection on electricity efficiency and other operational aspects during pre-reduction of pelletised chromite
Beukes, J.P.; Neizel, B.W.; Kleynhans, E.L.J.; Van Zyl, P.G.; Dawson, N.F. (2013)Production of ferrochrome is an energy intensive process. Pelletised chromite pre-reduction is most likely the ferrochrome production process with the lowest specific electricity consumption, i.e. MWh/t ferrochrome ... -
Theoretical and practical aspects of Cr(VI) in the South African ferrochrome industry
Beukes, J.P.; Van Zyl, P.G.; Dawson, N.F. (SAIMM, 2010)The production of ferrochrome alloy from chromium bearing chromite ores is conducted at high temperature under highly reducing conditions. However, albeit completely unintended, it is impossible to completely exclude ... -
Why is CaCO3 not used as an additive in the pelletised chromite pre-reduction process?
Neizel, B.W.; Beukes, J.P.; Van Zyl, P.G.; Dawson, N.F. (Elsevier, 2013)The production of ferrochrome is an energy intensive process. At present, the pelletised chromite pre-reduction process is most likely the ferrochrome production process with the lowest specific energy consumption, i.e. ...