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The document evaluates ammoniacal ammonium sulphate leaching (AASL) as a pretreatment for a copper-bearing gold ore before cyanidation. Direct cyanidation resulted in only 10% gold extraction due to copper interference. AASL pretreatment dissolved over 90% of copper and improved subsequent cyanide leaching gold extraction to over 90% while significantly reducing cyanide consumption. Pre-aeration before cyanidation also improved gold extraction, but to a lesser extent than AASL. The findings demonstrate that

Author

Zeryan Guerra

Language

EN