|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Deriving Value from Challenging Waste Streams: Recycling and Sustainability Joint Session
||B-17: Recovery of Nickel and Cobalt from a Waste Zone of Nickel Laterite Ore Using a Mixture of Extractants in Solvent Extraction Technique
||Paula Aliprandini, Mónica Maria Jimenez Correa, Jorge Alberto Soares Tenório, Denise Crocce Romano Espinosa
|On-Site Speaker (Planned)
The surface zone of nickel laterite ore was considered as ore residue. However, due to the reduction of ore sources and the increase in demand, the zone previously discarded is processed now. This ore zone, known as limonite, the focus are nickel and cobalt. After the removal of the impurities, the remaining solution contains cobalt, magnesium, manganese and nickel. Solvent extraction is a hydrometallurgical technique used in the separation of metals from aqueous solutions. Cyanex 272 and D2EHPA are extractants used to separate nickel from cobalt. The mixture of extractants can change the performance during the extraction of metals. This work aims to evaluate the solvent extraction of the nickel and cobalt when Cyanex 272 and D2EHPA are mixed. The results showed that the increased concentration of D2EHPA in organic phase increased the extraction of nickel and magnesium. However, cobalt extraction was reduced and the manganese extraction was not altered.