NONEQUILIBRIUM ELECTROKINETIC PROPERTIES OF MAGNESITE AND DOLOMITE DETERMINED BY THE LASER-DOPPLER ELECTROPHORETIC LIGHT-SCATTERING (ELS) TECHNIQUE - A SOLIDS CONCENTRATION-EFFECT
J. Skvarla et S. Kmet, NONEQUILIBRIUM ELECTROKINETIC PROPERTIES OF MAGNESITE AND DOLOMITE DETERMINED BY THE LASER-DOPPLER ELECTROPHORETIC LIGHT-SCATTERING (ELS) TECHNIQUE - A SOLIDS CONCENTRATION-EFFECT, Colloids and surfaces. A, Physicochemical and engineering aspects, 111(1-2), 1996, pp. 153-157
Zeta potential histograms of finely ground magnesite and dolomite susp
ended in water, determined by the laser-Doppler electrophoretic light
scattering technique, have been found to be modified by increasing the
solids concentration from 100 to 5000mg l(-1). The zeta potential pea
k was continuously shifted from -20 to +15mV with a reversal at a soli
ds content of 2000mg l(-1) for magnesite and 800mg l(-1) for dolomite.
For magnesite, this effect seems to be less pronounced, but for dolom
ite it resembles the pattern for calcite published in the literature.