Leaching of gold and silver from printed circuit board of mobile phones , In both leachates the effect of adding copper as a alyst agent and hydrogen peroxide as the oxidizing agent to the reaction were evaluated. The extraction of...
Hydrometallurgical Recovery of Metals from Large Printed Circuit ... , Sep 29 2015 ... The effect of the above-mentioned leaching reagents on the PCB ... green technology for recovery of gold from non-metallic secondary sources.
Effect of Pyrite on Thiosulfate Leaching of Gold and the Role ... - MDPI , Jul 19 2017 ... Ammoniacal thiosulfate has been studied over the last three decades as a nontoxic and highly-efficient alternative lixiviant to cyanide for leaching...
Leaching of Gold and Silver from Crushed Au-Ag ... - Bentham Open , Jan 9 2008 ... In comparison with the classical cyanide leaching thiourea leaching acts faster and without a harmful environmental impact. Keywords: Waste...
thiosulphate leaching – an alternative to cyanidation in gold ... - SGS , The thiosulphate leaching of gold ores has great potential to reduce the impact on the environment compared to the cyanidation process. Unlike cyanide which...
Leaching of Silver and Gold Contained in a Sedimentary Ore Using ... , Figure 7. Kinetic study of gold leaching; effect of the thiosulfate concentration: A kexp and B order of reaction n =...
The leaching and adsorption behaviour of gold ores - Minerva Access , The effect of preg-robbing on the enhanced extraction of gold in the presence of activated carbon was closely examined for a number of different ore types.
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