Flotation emergency

Wang, L.K., Emerging Induced and Dissolved Gas Flotation Processes, 2007 National Engineers Week Seminar, Practicing Institute of Engineers, Albany, NY, February 2007. 

Wang, L.K., Emerging flotation technologies, in Advanced Physicochemical Treatment Technologies, L.K. Wang, Y.T. Hung, and N.K. Shammas, Eds, Humana Press, Totowa, NJ, 2007, pp. 449-484. 

Pyrrhotite is one of many sulphides which display collectorless flotation resulting from the formation of sulphur on the mineral surface (Hamilton and Woods, 1981 Heyes and Trahar, 1984 Hodgson and Agar, 1984). The anodic scan section of cyclic voltammetry for pyrrhotite electrode in pH = 2.2, 4.7, 7.0, 8.8, 11, 12.1, 12.7 buffer solutions respectively, is presented in Fig. 2.23. The cyclic voltammograms curve at pH = 8.8 is also presented in Fig. 2.23. It can be seen from Fig. 2.23 that anodic current peak emerges at about -0.1—0 V when pH < 11. As pH increases, the peak moves to the left. This peak may correspond to the following reactions ... 

To achieve the first objective, various methods of bubble production and particle agitation have been used. Since the invention oF flotation by Haynes in I860, two basic methods have emerged ... 

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