The formation of the electrokinetic potential of clay in a variety of environments
The values of clays suspensions optical density of the Lobanovsky montmorillonite, Alexanderovsky kaolinite, Chelyabinsky and kaolinite in the pH range from 2 to 12. Defined the intervals of clay suspensions greatest aggregate stability in this range (pH 6 to 9). The effect of the clays polydisperse composition on aggregate stability was defined. Plots of optical density (A) from pH was made. The influence of pH on the electrokinetic potential values of montmorillonite and kaolinite clay particles in aqueous suspensions was defined. Established that increasing acidity leads to to neutralize (compensate for) the negative surface charge of clay particles by ions H+, which is realized by reduction of the Zeta-potential in magnitude and as a result in coagulation of clay particles, while by reducing the acidity of the particle surface is charged more negatively.