METHOD FOR LEACHING COPPER OXIDE REPLACING SULFURIC ACID WITH A NON POLLUTING ORGANIC LEACHING AGENT

摘要

The invention relates to a method for leaching copper oxide without using sulfuric acid comprising the following steps consisting in: impregnating the copper oxide using a non polluting organic leaching agent consisting of an aqueous solution formed by tricarboxylic acid (C6H807) combined with water in a mixture having an acidity varying between a pH of 1 and 5; obtaining copper citrate; and optionally again irrigating the copper oxide impregnated with the non polluting organic leaching agent thereby obtaining a more concentrated copper citrate.