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- Title
ESTUDO TERMODINÂMICO DA RECUPERAÇÃO DE COBRE UTILIZANDO RESINA QUELANTE PARA DIFERENTES ESTADOS DE OXIDAÇÃO DO FERRO.
- Authors
Barbosa Botelho Junior, Amilton; Soares Tenório, Jorge Alberto
- Abstract
The main problem of metals recovery from nickel laterite ore is the presence of Fe(III), in concentrations higher than 55%, which harms separation techniques in hydrometallurgical process. Kinetics studies shows that metals recovery is higher when iron is present in solution in oxidation state +2 than iron in oxidation state +3. However, thermodynamics studies to evaluate the effect of iron oxidation state in separation process is little explored in the literature. Therefore, the aim of this work is to study thermodynamics in the recovery process of copper using ion exchange technique by chelating resin. The effect of temperature was studied between 25°C and 60°C, and samples were analyzed in X-ray spectroscopy. Results shows that copper recovery was higher for solution with Fe(II), and temperature decreased the recovery copper effectiveness.
- Subjects
OXIDATION states; NICKEL ores; X-ray spectroscopy; COPPER ions; TEMPERATURE effect
- Publication
Tecnologia em Metalurgia, Materiais e Mineração, 2019, Vol 16, Issue 3, p358
- ISSN
2176-1515
- Publication type
Article
- DOI
10.4322/2176-1523.20191782