Optimisation of the chlorination of gold in decopperized anode slime in aqueous medium

A study is conducted to determine optimum conditions for the chlorination o f gold in decopperized anode slime with chlorine gas in aqueous medium by t he Taguchi experimental design method. The effect of parameters such as rea ction temperature, reaction period, stirring speed and solid-liquid ratio w as sought. The optimum conditions were found to be reaction temperature 60 degrees C, reaction period 4500 s, stirring speed 600 min(-1) and solid-liq uid ratio 0.1 g ml(-1). The experimental results showed that, under optimal leaching conditions, the extraction of gold could be over 99%, (C) 1999 El sevier Science B.V. All rights reserved.