Measurement of Conductivity of Chalcopyrite Particles Dispersed in Water

摘要

A method for measuring the electrical conductivity of particles dispersed in water is tested on chalcopyrite samples. Using an automated conductivity-settling technique, aqueous solutions of KCl and NaNO_3 were used to change the conductivity of the medium. The particle conductivity was estimated at the iso-conductivity point where the solution and the particles have the same conductivity. The conductivity is much lower than the bulk value for chalcopyrite and adsorption of xanthate significantly reduced the conductivity. These observations suggest the measured conductivity is associated with the solid/water interface.