|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Deriving Value from Challenging Waste Streams: Recycling and Sustainability Joint Session
||Recovery of Copper from Nickel Laterite Leach Waste by Chemical Reduction Using Sodium Dithionite
||Amilton Barbosa Botelho Junior, Iara Alves Anes, Denise Espinosa, Jorge Tenório
|On-Site Speaker (Planned)
Recovery of metals from reserves with low grade and from waste with high presence of contamination is a challenge to be overcome. Metals like nickel, cobalt and copper could be recovery from nickel laterite leach waste by many different processes. The aim of this work was recovery copper from liquor of nickel laterite by chemical reduction. Copper concentration in liquor is 146mg.L-1 and reducing agent used was sodium dithionite 1mol.L-1. Stirring speed was studied between 90-200rpm and influence of temperature was studied between 25-60°C. Results indicated a selective precipitation of copper on solution with others metals at 240mV. The analyzes were conducted in SEM, energy-dispersive X-ray spectroscopy and XRD and indicated presence of copper and sulfur.