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This study investigates the removal of arsenic from copper ores and concentrates using alkaline leaching in sodium hydrosulfide (NaHS) media. The process effectively decomposes enargite (Cu3AsS4) into Cu2S and releases arsenic into solution as As (III) ions, achieving over 90% arsenic removal within 1-6 hours at 80 °C. The results indicate a selective leaching process, with no detectable dissolution of copper or iron, highlighting the potential for a cost-effective and environmentally friendly method for tr

Author

Faisal Rahmad

Language

EN