Determination of maximum zinc recovery of Vazante mine ore by flotation process

Bechir, Jorge Lucas Carvalho; Baptista, José Renato de Carvalho; Souza, Adelson Dias de; Martins, E.L.C.

doi:10.1590/0370-44672018720069

Cited by 4 publications

(2 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nexa Resources's Vazante zinc mine, whose depressed flotation product is reviewed here, accounts for approximately 50% of the zinc ore processed in Brazil. The mill feed is a silicate ore composed primarily of dolomite, willemite, hematite, and quartz [19][20][21][22] and generates around 1.2 Mt of flotation depressed product, actually without economical value, per year.…”

Section: Introductionmentioning

confidence: 99%

Optimization of magnetic separation of hematite contained in the depressed product from vazante mine s zinc ore flotation

Rayes¹,

Fantato²,

Deursen³

et al. 2023

Tecnol. Metal. Mater. Min.

View full text Add to dashboard Cite

The mining industry has seen a significant decline in mill feed grade in recent years, resulting in an ongoing build-up of materials not recovered at the mineral processing plants whose economic value has not yet been determined. Tailings dams have been the preferred method of disposal of such materials. However, recent dam breach events and the growing demand for mineral goods have enhanced the appeal of a more effective use of mined materials to prevent tailings accumulation and reduce social and environmental impacts, in line with the environmental, social and governance (ESG) principles that most companies have adopted. Different techniques can be used to recover economically valuable minerals contained in such materials, among which magnetic separation stands out for reasons of cost, production capacity, and recent developments of new equipment and matrices for wet high-intensity magnetic separators. The outcome includes gains in capacity, grade, and recovery yield. This paper assessed the use of a matrix developed by the company Gaustec, called BigFlux, in the magnetic separation of depressed product from the flotation process at Nexa Resources's Vazante mine. Laboratory-scale magnetic separation tests were conducted using standard and an optimized matrix. For a 59% iron concentrate, the metallurgical recovery using such optimized matrix reached 72.6%, up 4% from the figure resulting from the use of the standard matrix, thus indicating that the use of the optimized matrix can improve the magnetite recovery process of the studied material.

show abstract

Section: Introductionmentioning

confidence: 99%

Optimization of magnetic separation of hematite contained in the depressed product from vazante mine s zinc ore flotation

Rayes¹,

Fantato²,

Deursen³

et al. 2023

Tecnol. Metal. Mater. Min.

View full text Add to dashboard Cite

show abstract

“…It is assumed that for sulfide minerals, the conditions are up to 5µm (Chaves, 2013;Bechir, 2019). For zinc silicates, studies indicate that the current flotation process, which shows satisfactory results, does not occur with particles less than 20µm (Bechir et al, 2019).…”

Section: Flotationmentioning

confidence: 99%

Recovery of magnesium sulfate from a zinc ore flotation tailing using hydrometallurgical route.

Costa¹

View full text Add to dashboard Cite

por aceitar ser minha orientadora, pela compreensão em momentos atípicos, e pelas contribuições e acompanhamento do trabalho.À Dra. Tatiana Scarazzato, pelas dicas como pesquisadora durante toda sua jornada de coorientação, pela paciência e amizade durante esse tempo, deixando o trabalho mais leve durante essa fase tão importante.Ao Prof. Dr. Jorge Alberto Soares Tenório, por disponibilizar o laboratório para o desenvolvimento deste trabalho, pelos ensinamentos e questionamentos que me fez crescer como pesquisadora e pessoa.À empresa Votorantim Metais/Nexa Resources pela disponibilização do material a ser estudado e pela confiança.À técnica do laboratório da Escola Politécnica da USP Ana Carolina, que sempre se dispôs a ajudar e ensinar química para um trabalho melhor. Assim como, a amizade durante todo esse tempo de aprendizado.Ao meu noivo, Nicholas Braun Rodrigues, que nunca mediu esforços para me incentivar, me fazendo acreditar sempre no melhor. Por todos os momentos de descontração e apoio. À Paula Aliprandini pelas discussões a cada dia sobre etapas do trabalho, conversas que me fizeram crescer no mestrado e, pelas conversas que deixaram esse tempo de pesquisa mais leves acompanhados de um bom café.Ao Caio e a Yara pelas conversas e momentos extrovertidos. Pela motivação e apoio a cada etapa turbulenta, assim como as boas risadas em momentos de descontração. À Jaqueline que se fez presente assim que chegou ao laboratório disposta a ajudar. À toda equipe do Laboratório de Reciclagem, Tratamento de Resíduos e Metalurgia Extrativa (LAREX), que se tornaram amigos durante um momento cheio de desafios como o mestrado, aprimorando, portanto, o conhecimento nesta etapa.

show abstract

Mass and Metallurgical Balance Forecast for a Zinc Processing Plant Using Artificial Neural Networks

Niquini

Costa

2020

Nat Resour Res

View full text Add to dashboard Cite

Determination of maximum zinc recovery of Vazante mine ore by flotation process

Cited by 4 publications

References 1 publication

Optimization of magnetic separation of hematite contained in the depressed product from vazante mine s zinc ore flotation

Optimization of magnetic separation of hematite contained in the depressed product from vazante mine s zinc ore flotation

Recovery of magnesium sulfate from a zinc ore flotation tailing using hydrometallurgical route.

Mass and Metallurgical Balance Forecast for a Zinc Processing Plant Using Artificial Neural Networks

Contact Info

Product

Resources

About