Electrowinning | Gekko - Gekko SystemsElectrowinning is the recovery of metals, such as gold and silver, from solution by . To process high-grade silver-bearing pregnant solutions to pure silver.gold electrowinning process,Selective Electrowinning of Silver and Gold From Cyanide Process .1. Selective Electrowinning of Silver and Gold. From Cyanide Process Solutions. By F. H. Nehl, J. E. Murphy, G. B. Atkinson, and L. A. Walters. UNITED STATES.