J -M Thiebaut et al 1989 J. Phys. D: Appl. Phys. 22 154 doi:10.1088/0022-3727/22/1/022
J -M Thiebaut, J -P Vaubourg and G Roussy
Show affiliationsA study is presented of the fixation of collectors on fluorite ore under electromagnetic fields of low and high intensity. Dielectric measurement results are interpreted in terms of physico-chemical interactions between the surface of the solid and the liquid. Electrical modelling of the heterogeneous medium allows the prediction of the distribution of the electromagnetic field. Energy losses are preferentially located on the solid grains or near the surface of the grains. Some experiments of the recovery of fluorite under electromagnetic irradiation are presented. When oleate is the collector, the electromagnetic field increases the fixation of the collector because of the temperature gradient at the interface. This is evaluated on the basis of a simple model. When the collector is dodecylsulphonate, thermal effects have been taken into account to interpret the results.
68.08.De Liquid-solid interface structure: measurements and simulations
77.22.Ch Permittivity (dielectric function)
41.20.-q Applied classical electromagnetism
82.65.+r Surface and interface chemistry; heterogeneous catalysis at surfaces
Soft matter, liquids and polymers
Accelerators, beams and electromagnetism
Condensed matter: electrical, magnetic and optical
Surfaces, interfaces and thin films
Issue 1 (14 January 1989)
J -M Thiebaut et al 1989 J. Phys. D: Appl. Phys. 22 154
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