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INVESTIGATION ON THE PHYSICO - CHEMICAL PROPERTIES OF MAGNETIC CLAY COMPOSITES

This article studies the main physical and chemical properties of magnetic clays. Structural changes in magnetic clay composite suspensions were evaluated by measuring the permittivity through direct measurement of the sensor capacitance and through computer measurement of the frequency of the electric signal inversely proportional to the sensor capacitance. Natural bentonite clay of the Tagan field (East Kazakhstan region) was used in this study. Magnetite synthesized by the method of co-precipitation of iron salts with magnetite-clay composites. Different compositions of clay-magnetite compounds were investigated to study the magnetic properties of the samples. According to the study, with the increasing of magnetite in the composition the magnetic properties increase. However, increasing the magnetite in the composition leads to lose the stability of the suspension. The stability of the suspension also investigated by measuring of the size of the particles. Depending on the findings of the study 20% magnetite-clay composition was the optimal value for the magnetic solution.