%0 Journal Article
%T Electrolysis of Gold from Filtration Waste by Means of Mechanical Activation
%A Jana Ficeriov¨¢
%A Peter Bal¨¢£¿
%J Acta Montanistica Slovaca
%D 2012
%I Technical University of Kosice
%X The intensification of the gold thiourea leaching from a filtration waste (Ko ice, Slovakia) using mechanical activationas the pretreatment step has been studied. The leaching of ¡°as-received¡° sample in an acid thiourea solution resulted in 65 % Audissolution. However, after mechanical activation in a planetary mill 99 % of the gold was leached. The optimum redox potential forelectrolysis is in the range 500-523 mV for the gold extraction 99.79 % from the mechanically activated sample. The mechanicalactivation resulted in an increase of the specific surface area of the waste from 0.7 m2g-1 to a maximum value of 13.5 m2g-1. The physicochemicalchanges in the filtration waste as a consequence of mechanical activation had a pronounced influence on the subsequent goldextraction.
%K waste
%K gold
%K leaching
%K mechanical activation
%K electrolysis
%U http://actamont.tuke.sk/pdf/2012/n2/7_Ficeriova.pdf