Abstract
Summary Silver-copper mixtures occur at various stages of metal recovery processes particularly in the refining of silver. Parametric pumping is proposed as a method of separating copper from silver. The process consists in making a periodic change in the temperature of a fixed bed of ion-exchange resin with a synchronized periodic relative flow of the liquid mixture. Experimental results at total reflux (batch) are presented that show that a good separation can be made by this method using Duolite C265 resin. The results are interpreted by a graphical approach using standard ion-exchange breakthrough curves obtained experimentally. Changes in total concentration are observed and interpreted as being the effect of temperature on Dorman electrolyte uptake.
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