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Browsing by Author "Van Vuuren, DS"

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  • Skosana, PJ; Van Vuuren, DS; Heydenrych, MD (South African Institution of Chemical Engineers, 2015-05)
    A mechanistic model describing the mass and momentum exchange in bubble columns is proposed that is based on the observations that the gas distribution in a bubble column is not uniform across the column and that as a ...
  • Van Vuuren, DS; Engelbrecht, AD; Hadley, TD (Springer Verlag, 2005-10)
    The value chain of titanium products shows that the difference between the cost of titanium ingot and titanium dioxide is about $9/kg titanium. In contrast, the price of aluminum, which is produced in a similar way, is ...
  • Van Vuuren, DS; Stone, AK (2006-09)
    There are a number of readily available, large reserves of titanium dioxide bearing minerals from which the titanium dioxide cannot currently be economically recovered via current commercial recovery processes due to: The ...
  • Skosana, PJ; Van Vuuren, DS; Heydenrych, MD (Trans Tech Publications, 2014-10)
    One of the advantages of bubble columns is high heat transfer rates. High heat transfer is important in reactors when high thermal duties are required. An appropriate measurement of heat transfer coefficient is of primary ...