QUARTZ-NATRIUM SILICATE SYSTEM AND INTERFACE INTERACTION IN IT

This paper analyses and discusses the coagulation behaviour among -20μm quartz particles from the point of view of surface thermodynamics on the basis of settlement test, zeta-electric potential measurement, contact angle survey, and discusses the distributing and depressing mechanisms of natrium silicate with quatz particles from the point of view of interface force. The experiment result and theorical calculation had proved that the typical DLVO theory can exactIy describe the distribution and coa-gulation behaviours (under the action of agents) of hydrophilic particles only in the expension of thetheory.