Browsing Research Articles (Chemical Engineering) by Author "Du Plessis, W."

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Effect of the value of x in NH4F·xHF on the digestion of plasma-dissociated zircon

Du Plessis, W.; Pienaar, A.D.; Postma, C.J.; Crouse, Philippus L. (Elsevier, 2016-02)

Ammonium acid fluoride (NH4F·xHF) has been identified as an alternative fluorinating agent for zircon, and may provide a method by which a wide variety of anhydrous metal fluorides can be synthesized. Data on the kinetics ...
Kinetics and thermodynamic parameters for the manufacturing of anhydrous zirconium tetrafluoride with ammonium acid fluoride as fluorinating agent

Pretorius, C.J.; Du Plessis, W.; Nel, Johannes T.; Crouse, Philippus L. (Southern African Institute of Mining and Metallurgy, 2012-07)

More than 30 percent of the global demand for zircon (ZrSiO4) is supplied by South Africa. A significant amount of the zircon is exported, and beneficiated products are then imported for industrial applications locally. ...

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