this study investigates the optimization of gold dissolution from aghdarre ore. therefore, a laboratory investigation was initiated, to improve the leaching conditions with the objective of maximizing mill capacity with no reduction on gold recovery. it was observed that the time reduction from 25 to 15 hours did not change the gold recovery. in the other words, it indicated that a capacity of ...

Abstract The most common method used for gold processing in artisanal and small-scale mining is amalgamation using mercury as a extracting agent. Indonesia one of the countries that ratify Minamata Convention, meaning has agreed to reduce or even eliminate use mercury. Some methods replacing gold-extracting agent are cyanidation borax. research aims determine whether miners Pelangan still proce...

The present chapter describes a new technology of pressure oxidation/cyanidation leaching for the dissolution of gold and silver and the recovery of the precious metals by using the electrochemical process of Electrocoagulation (EC). The novel method demonstrates that the oxidation and dissolution of gold and silver in alkaline cyanide solution can be conducted simultaneously in the same reacto...

Due to current technologies used to extract gold, increasing environmental pollution has occurred. Existing technologies for the extraction and recovery of gold include cyanidation, which uses toxic cyanide. Because of the potential health threat and waste generated by the cyanidation process, an increasing need to develop new technologies to extract and recover gold from aqueous solution has a...