Simultaneous recovery of copper and manganese from exotic copper ore in acid chloride media using cane molasses as the reducing agent

Velásquez-Yévenes, Lilian; Lasnibat, Ricardo

doi:10.1016/j.hydromet.2020.105531

Cited by 6 publications

(4 citation statements)

References 22 publications

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“…Low-grade sulfide ores are subjected to concentration operations, which include flotation, to obtain dry concentrates of around 30% of copper with 10-200 μm of grain size [1]. Within this context, it is possible to mention Velásquez-Yévenes and Lasnibat's research [2] about the simultaneous recovery of copper and manganese from "exotic-Cu" deposits in Chile, characterized by the refractoriness to dissolution under acidic and oxidative conditions, or the research of Godirilwe and collaborators about the extraction of copper from complex carbonaceous sulfide ore, characterized by their mineralogical complexity and impurities of organic carbon and carbonates [3]. Other research in this line that can be mentioned is that of Corin and coauthors about complex copper ore (sulfide, oxide, and mixed) in Zambia [4], or Liu and researchers that reported the beneficiation of complex copper oxide ores rich in malachite [5] or the research of Hu et al about low-grade copper ores with high contents of oxide ore and carbonate gangue (malachite, chrysocolla, chalcopyrite, and chalcocite with gangue minerals as quartz, limonite, calcite, and dolomite) from Yunnan province in China [6].…”

Section: Deposits Minerals and Trendsmentioning

confidence: 99%

Copper Overview: From the Ore to the Applications – A Case Study of the Application of Concentrated Solar Energy to the Treatment of Copper Metallurgy Slags

Fernández-González,

Felipe Verdeja González

2023

Copper - From the Mineral to the Final Application

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Copper is a metal that is widely used in different applications mainly due to its thermal and electrical conductivities, together with its corrosion resistance, particularly when it is alloyed. This chapter intends to be a summary of the copper metallurgy: from the historical aspects and mineral deposits or statistics to the different technologies used to produce metallic copper together with the distinct applications (of copper and copper alloys). Environmental issues are deeply rooted in industrial policies to improve the recovery of the metal as well as to minimize the residues generated in the process, which are a problem from the environmental point of view but also from the economic standpoint. Therefore, this document concludes with a research work carried out with the aim of treating copper slags with concentrated solar energy to recover valuable elements from these slags, as iron and copper. Results from this investigation suggest that solar energy could have an enormous potential in the copper metallurgy.

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Section: Deposits Minerals and Trendsmentioning

confidence: 99%

Copper Overview: From the Ore to the Applications – A Case Study of the Application of Concentrated Solar Energy to the Treatment of Copper Metallurgy Slags

Fernández-González,

Felipe Verdeja González

2023

Copper - From the Mineral to the Final Application

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“…When the latter reacts with water, it creates sulfuric acid, producing metals such as copper. Under certain conditions, these metals can be transported downstream, creating deposits [17][18][19]. Black copper minerals, also known as Si-Fe-Cu-Mn-rich silicates, have a complex structure that is neither crystalline nor amorphous [20].…”

Section: Overviewmentioning

confidence: 99%

“…Black copper minerals, also known as Si-Fe-Cu-Mn-rich silicates, have a complex structure that is neither crystalline nor amorphous [20]. Commercially important, they contain considerable amounts of manganese and copper [19]. Minerals with high MnO 2 contents (such as the ones above) have proven to be refractory to conventional leaching processes.…”

Section: Overviewmentioning

confidence: 99%

Comparative Study of MnO2 Dissolution from Black Copper Minerals and Manganese Nodules in an Acid Medium

Moraga

Cerecedo‐Sáenz

González

et al. 2021

Metals

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The low grade of copper deposits and the use of the froth flotation process have caused excessive tailing production. In recent years, experts have looked for new alternative methods to improve this situation. Black copper minerals are abundant resources not exploited by large-scale copper mining and possess high Mn concentrations. On the other hand, manganese nodules are submarine resources and show high concentrations of Cu, Ni, Fe, and, mainly, Mn. However, both mineral resources are refractory to conventional leaching processes, and so a reducing agent is necessary for their treatment. We studied the use of tailings obtained from the flotation of foundry slags with a high content of Fe3O4 as reducing agents at different MnO2/tailings ratios and H2SO4 concentrations. Mn dissolution was compared in marine nodule and black copper minerals samples. It was found that higher Mn dissolutions are obtained from marine nodules, likely due to the acid consumption created by Cu dissolution from black copper minerals. The remnant elements in manganese nodules were leached under an oxidant condition.

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“…It has been used in dietary applications as a sweetening and flavoring agent for food, as an ingredient for beer brewage, as an additive for composites, and as a green reductant for chemical reactions. [30][31][32][33][34][35] Although the price of molasses has been increasing year by year, unfortunately, ample amounts of it have been disposed of as sugar refinery factories' waste. [35] As a thickening agent and stabilizer, it causes a more homogeneous distribution of the metal oxide nucleates and reduces the size of the nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Biocompatible Antibacterial Denim Fabric Prepared via Green Synthesis of the Copper Oxide Nanoparticles Using Raw Sugar Molasses

et al. 2022

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Microbial susceptibility of the denim fabric sized by starch raises some skin health concerns about this extensively used fabric. In this work, biocompatible antibacterial denim fabric is prepared by optimized green synthesis of the copper(I) oxide (Cu 2 O) nanoparticles on the cotton fibers. The copper oxide nanoparticles were synthesized without using any toxic chemical to reduce the copper salt. As an alternative, the waste of the sugar refinery factory, molasses, was used as eco-friendly and cost-efficient material. The antibacterial activity of the samples against Candida albicans as model fungus, Escherichia coli as Gram-negative, and Staphylococcus aureus as Gram-positive model bacteria is investigated besides cytotoxicity; also, the synthesis process is optimized regarding the most biocompatible and antibacterial nanocomposite. The characterizations prove the effectiveness of the molasses for reduction of the copper salt and formation of the copper(I) oxide (Cu 2 O) nanoparticles. Synthesis of the copper(I) oxide (Cu 2 O) nanoparticles has a positive effect on the mechanical properties of the nanocomposite. The results of this work introduce a green method for sustainable development of the fabric industry; it also presents a potential application for molasses and reutilizing it.

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Simultaneous recovery of copper and manganese from exotic copper ore in acid chloride media using cane molasses as the reducing agent

Cited by 6 publications

References 22 publications

Copper Overview: From the Ore to the Applications – A Case Study of the Application of Concentrated Solar Energy to the Treatment of Copper Metallurgy Slags

Copper Overview: From the Ore to the Applications – A Case Study of the Application of Concentrated Solar Energy to the Treatment of Copper Metallurgy Slags

Comparative Study of MnO2 Dissolution from Black Copper Minerals and Manganese Nodules in an Acid Medium

Biocompatible Antibacterial Denim Fabric Prepared via Green Synthesis of the Copper Oxide Nanoparticles Using Raw Sugar Molasses

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