Hydrometallurgical processing of chalcopyrite: A review of leaching techniques

Autor(es)

Cheje Machaca, Darwin Michell ; Botelho Jr, Amilton Barbosa ; de Carvalho, Thamyres Cardoso ; Tenorio, Jorge Alberto Soares ; Espinosa, Denise Crocce Romano

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS; v. 31, n. 12, p. 19-pg., 2024-12-01.

Resumo

Copper, an essential metal for the energy transition, is primarily obtained from chalcopyrite through hydrometallurgical and pyrometallurgical methods. The risks and harmful impacts of these processes pose significant concerns for environmental and human safety, highlighting the need for more efficient and eco-friendly hydrometallurgical methods. This review article emphasizes current processes such as oxidative leaching, bioleaching, and pressure leaching that have demonstrated efficiency in overcoming the complicated chalcopyrite network. Oxidative leaching operates under benign conditions within the leaching media; nevertheless, the introduction of oxidizing agents provides benefits and advantages. Bioleaching, a non-aggressive method, has shown a gradual increase in copper extraction efficiency and has been explored using both primary and secondary sources. Pressure leaching, known for its effectiveness and selectivity in copper extraction, is becoming commercially more viable with increased research investments. This research also provides important data for advancing future research in the field. (AU)

• Processo FAPESP: 21/14842-0 - Elucidação do mecanismo de complexação de organometálicos entre extratantes orgânicos e elementos terras raras
• Beneficiário: Amilton Barbosa Botelho Junior
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 20/00493-0 - Mineração sustentável: recuperação de matérias-primas críticas de baterias usando tecnologias ambientalmente amigáveis
• Beneficiário: Jorge Alberto Soares Tenório
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 19/11866-5 - Desenvolvimento de processos inovadores para recuperação de metais críticos
• Beneficiário: Denise Crocce Romano Espinosa
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 23/01032-5 - Separação de metais críticos através de membranas suportadas com líquidos: avaliação da interação sinérgica entre organofosforados e membranas
• Beneficiário: Amilton Barbosa Botelho Junior
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado