Leaching behavior of zinc and copper from zinc refinery residue and filtration performance of pulp under the hydrothermal process

Cao, Lei Lei; Liao, Yalong; Shi, Gongchu; Z, Yu; Guo, Muyuan

doi:10.1007/s12613-019-1706-z

Cited by 10 publications

(3 citation statements)

References 16 publications

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“…performed selective leaching of zinc from electric arc furnace dust. In another study, Cao et al 15 . demonstrated the leaching of zinc and copper by hydrothermal processing of zinc refinery residue.…”

Section: Introductionmentioning

confidence: 99%

Selective leaching of scandium and yttrium from red mud induced by hydrothermal treatment

Liliou

Saru

Veksha

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND The red mud (bauxite residue) is a rare earth element (REE) bearing material that should be considered a valuable resource. This research investigated the selective leaching of scandium (Sc) and yttrium (Y) from red mud by agitation leaching, as well as thermal and hydrothermal processing. Material characterization was conducted to shed light on the leaching mechanism for high REE extraction selectivity. RESULTS The agitation leaching with HCl, HNO3, and H2SO4 was insufficient for high leaching efficiencies of REEs. The addition of Ethylenediaminetetraacetic acid (EDTA) had a minor influence in the leaching of elements. Two acid combinations (0.27 Μ HCl + 0.2 Μ H2SO4 and 0.27 Μ HCl + 0.2 Μ HNO3) were formulated to optimize the leaching efficiency of REEs under thermal and hydrothermal processing. Thermal processing showed high Y leaching, but the selectivity was low because of considerable Ti and Fe extraction. High REE leaching selectivity was achieved when HCl + HNO3 was used in hydrothermal processing at 180 °C. Material characterization indicated that dense aggregation of particles occurred after hydrothermal processing. The mineral geothite was dissolved and new crystals like potassium calcium silicate were formed. CONCLUSION The high selective leaching of Sc and Y during hydrothermal processing was controlled by the extraction and desorption of elements from the material surface. The precipitation of Fe, Ca, and Ti and their re‐crystallization in new minerals have enhanced leaching selectivity. © 2021 Society of Chemical Industry (SCI).

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Section: Introductionmentioning

confidence: 99%

Selective leaching of scandium and yttrium from red mud induced by hydrothermal treatment

Liliou

Saru

Veksha

et al. 2021

J of Chemical Tech & Biotech

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“…They found that 81.6% of copper and 37.7% of zinc can be dissolved under optimal conditions, while the iron recovery was only 26.2%. Cao et al [24] examined the factors controlling zinc and copper leaching rates for extracting valuable metals from the residue of zinc re neries. According to the results, under the optimum conditions, zinc and copper leaching rates were found to be 98.1% and 98.7%, respectively.…”

Section: Introductionmentioning

confidence: 99%

A comprehensive evaluation on leaching of non-ferrous metals from polymetallic tailings

Javanshir

Arasteh

Mohebbi

et al. 2023

Preprint

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There is a significant deficit between the supply and demand of critical metals, leading to look for new ways to get high-value elements from mine tailings. In this study, the atmospheric leaching method was applied to extract valuable elements, including copper, zinc, and copper oxide, from a polymetallic ore that was considered a tailing in the mining site. The sample contained 3.28% copper, 13.74% iron, 1.7% zinc, 5.71% lead, and 1.98% oxidized copper. The effect of time, stirrer speed, acid concentration, particle size, and temperature were investigated on the leaching of Cu, CuO, and Zn. The optimum recommended conditions for leaching of polymetallic ore were: acid concentration 0.5 mol L− 1, %solid 25%, and leaching time 1 h. Leaching recoveries of 63.5% for Cut, 97.5% for CuO, 1% for Fe, and 100% for Zn can be achieved under the optimum conditions. The results for the dissolution of metals agreed with mineralogical studies.

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“…Thus, for example, for the valorization of copper and zinc from the tailings sample obtained after flotation, Antonijević, and Asadi et al used sulfuric acid as a leaching agent and iron sulfate as an oxidant (Antonijević et al 2008, Asadi et al 2017). Santos and others used the same leaching agents to treat sphalerite concentrates (Santos et al 2010), Chen et al for sulfide tailings (Chen et al 2014), and Cao and others for zinc refinery process residues [Cao et al 2019]. According to Ahmed et al, 95% and 99% of copper were derived from secondary brass slag resources (Ahmed et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Thermodynamics Study for Selective Leaching of Copper and Zinc from Complex Secondary Raw Materials Using Oxidative Sulfuric Acid Leaching

Gajić,

Ranitović,

Marković

et al. 2023

Metall Mater Data

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This study focuses on evaluating the optimal process conditions for selectively leaching copper and zinc from complex secondary raw materials using the oxidative sulfuric acid leaching process. The research includes both physical and chemical characterization of the materials and a comprehensive thermodynamic analysis to assess the thermodynamic properties and behaviors of the system under investigation. The physical characterization involves determining parameters such as bulk density, moisture content, and granulometric composition of the samples. Elemental composition analysis is performed using X-ray fluorescence spectrometry (XRF) and energy dispersion spectroscopy (EDX), while the phase composition is determined through X-ray diffraction (XRD) analysis. Additionally, the materials' morphology is examined using scanning electron microscopy (SEM). Fraction diagrams are created using Hydra/Medusa software to assess the phase distributions of zinc and copper during the leaching process. The stability of the metals and potential chemical reactions within a defined temperature range is analyzed using Eh-pH diagrams with the HSC 9 Chemistry Software. Based on the thermodynamic analysis conducted, it is determined that effective leaching of copper and zinc from the complex secondary raw materials is achievable. Furthermore, the results indicate that the leaching process is relatively insensitive to temperature variations. The optimization of the leaching process should primarily focus on achieving optimized consumption of the oxidizing agent.

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Leaching behavior of zinc and copper from zinc refinery residue and filtration performance of pulp under the hydrothermal process

Cited by 10 publications

References 16 publications

Selective leaching of scandium and yttrium from red mud induced by hydrothermal treatment

Selective leaching of scandium and yttrium from red mud induced by hydrothermal treatment

A comprehensive evaluation on leaching of non-ferrous metals from polymetallic tailings

Thermodynamics Study for Selective Leaching of Copper and Zinc from Complex Secondary Raw Materials Using Oxidative Sulfuric Acid Leaching

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