Recovery of Cu(II) from nickel laterite leach using prereduction and chelating resin extraction: Batch and continuous experiments

Autor(es)

Botelho Junior, Amilton B. ^[1] ; Correa, Monica M. Jimenez ^[1] ; Espinosa, Denise C. R. ^[1] ; Dreisinger, David ^[2] ; Tenorio, Jorge A. S. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Dept Chem Engn, Sao Paulo - Brazil

^[2] Univ British Columbia, Dept Mat Engn, Vancouver, BC - Canada

• Tipo de documento: Artigo Científico
• Fonte: CANADIAN JOURNAL OF CHEMICAL ENGINEERING; v. 97, n. 4, p. 924-929, APR 2019.
• Citações Web of Science: 3

Resumo

The processing of laterite ores for nickel and cobalt production is increasing to meet the global demand for these metals. Sulphuric acid is used as a leaching agent, and metals present in the solution may be recovered by many different processes, such as ion exchange. The main problem with nickel limonite layer leach solution is the high concentration of iron, which decreases the efficiency of resin adsorption of nickel and cobalt. The removal of iron by oxidation and precipitation results in nickel, copper, and cobalt losses (co-precipitation). The aim of this work was to investigate the chelating resin extraction to recover copper from a leachate combined with a pre-reduction process, in order to increase the resin's efficiency and to increase its pH above 2.00. The following three synthetic solutions were studied: first, a solution prepared with Fe(III); the second solution was prepared with Fe(II); and the last solution was prepared with Fe(III) using a reducing process. Batch experiments were performed to study the influence of pH and temperature, and column experiments with three solutions were compared in order to verify suitable conditions to recover Cu(II) in a fixed-bed column process. (AU)

• Processo FAPESP: 16/05527-5 - Separação de metais a partir de líquor sulfúrico de resíduo de mineração utilizando resinas quelantes
• Beneficiário: Amilton Barbosa Botelho Junior
• Linha de fomento: Bolsas no Brasil - Mestrado
• Processo FAPESP: 17/06563-8 - Influência do agente redutor no líquor sulfúrico de resíduo de mineração no processo de troca-iônica utilizando resina quelante
• Beneficiário: Amilton Barbosa Botelho Junior
• Linha de fomento: Bolsas no Exterior - Estágio de Pesquisa - Mestrado
• Processo FAPESP: 12/51871-9 - Estudo de novas tecnologias e rotas de processamento para o tratamento e reciclagem de resíduos sólidos
• Beneficiário: Jorge Alberto Soares Tenório
• Linha de fomento: Auxílio à Pesquisa - Temático