Selective extraction of zinc, gallium, and germanium from zinc refinery residue using two stage acid and alkaline leaching

Rao, Shuai; Wang, Dongxing; Liu, Zhiqiang; Zhang, Kuifang; Cao, Hongmei; Tao, Jinzhang

doi:10.1016/j.hydromet.2018.11.007

Cited by 46 publications

(6 citation statements)

References 19 publications

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“…Similarly, the pattern of ZIF‐8 was also found in ZIF‐8 NPs‐doped‐PAN and ZIF‐8‐decorated‐PAN (S2G22 and G7G17), which showed the presence of perfect ZIF‐8 crystals of ZIF‐8 in the composites. On the other hand, the XRD pattern for Zn‐decorated‐PAN was different than ZIF‐8 and was similar to the XRD pattern of ZnSO 4 ·H 2 O, gunningite (corresponds to JCPDS card number 01‐081‐0022 [35]). The long‐term immersion of 2MI/PAN nanofibers in the excess Zn(II) solution led to the deposition of zinc sulfate crystals on the surface of 2MI/PAN nanofibers.…”

Section: Resultsmentioning

confidence: 62%

Thin‐film solid‐phase microextraction of fluoxetine using a novel sorbent prepared by direct decoration of zeolitic imidazolate frameworks on the surface of polyacrylonitrile electrospun nanofibers

Aghakhani

Ghanbari

Asl

et al. 2020

Separation Science Plus

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In this study, the decoration of nanostructured sorbent on polyacrylonitrile electrospun nanofibers, as a novel modification method was used for fabricating sportive thin films. Zeolitic imidazolate frameworks were directly grown on the surface of polyacrylonitrile nanofibers and for the first time applied for thin‐film solid‐phase microextraction of fluoxetine. The extraction efficiency of the novel thin film was compared with that of electrospun nanofibers modified with a common method of doping nanoparticles into nanofibers. The decorated nanofibers revealed 30 times higher surface area and four times higher extraction efficiency than doped nanofibers for the extraction of fluoxetine. The effective parameters on the efficiency of fluoxetine extraction and desorption were optimized using one factor‐at‐a‐time method. Under the optimum condition, limits of detection and quantification were 0.5 and 2 ng/mL, respectively. The linear dynamic range of the developed method was 2–2500 ng/mL (R2 = 0.997). The relative standard deviation of the method was <14.2%. The absolute recovery was 45%, while the relative recoveries were 77.3–97.5%. The developed method was an easy, simple, and sensitive method for the determination of fluoxetine in the environmental and biological samples.

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Section: Resultsmentioning

confidence: 62%

Thin‐film solid‐phase microextraction of fluoxetine using a novel sorbent prepared by direct decoration of zeolitic imidazolate frameworks on the surface of polyacrylonitrile electrospun nanofibers

Aghakhani

Ghanbari

Asl

et al. 2020

Separation Science Plus

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“…Secondary zinc resources are from a wide range of sources [ 17 , 18 , 19 , 20 , 21 ]. For zinc oxide dust from lead and zinc smelting, which is an important secondary zinc resource, the composition is complicated with many coexisting valuable metals and elementary impurities due to the complex zinc hydrometallurgy process for leached residue.…”

Section: Introductionmentioning

confidence: 99%

A Study on the Mechanism and Kinetics of Ultrasound-Enhanced Sulfuric Acid Leaching for Zinc Extraction from Zinc Oxide Dust

Zheng

Liu

et al. 2022

Materials

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As an important secondary zinc resource, large-scale reserves of zinc oxide dust (ZOD) from a wide range of sources is of high comprehensive recycling value. Therefore, an experimental study on ultrasound-enhanced sulfuric acid leaching for zinc extraction from zinc oxide dust was carried out to investigate the effects of various factors such as ultrasonic power, reaction time, sulfuric acid concentration, and liquid–solid ratio on zinc leaching rate. The results show that the zinc leaching rate under ultrasound reached 91.16% at a temperature of 25 °C, ultrasonic power 500 W, sulfuric acid concentration 140 g/L, liquid–solid ratio 5:1, rotating speed 100 r/min, and leaching time 30 min. Compared with the conventional leaching method (leaching rate: 85.36%), the method under ultrasound increased the zinc leaching rate by 5.8%. In a kinetic analysis of the ultrasound-enhanced sulfuric acid leaching of zinc oxide dust, the initial apparent activation energy of the reaction was 6.90 kJ/mol, indicating that the ultrasound-enhanced leaching process was controlled by the mixed solid product layers. Furthermore, the leached residue was characterized by XRD and SEM-EDS, and the results show that, with ultrasonic waves, the encapsulated mineral particles were dissociated, and the dissolution of ZnO was enhanced. Mostly, the zinc in leached residue existed in the forms of ZnFe2O4, Zn2SiO4, and ZnS.

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“…In order to avoid the above problem, the hydrometallurgical oxygen pressure acid leaching process was developed as an efficient route to extract zinc from sphalerite [7,8], and the leaching reaction can be expressed by the following equation:…”

Section: Introductionmentioning

confidence: 99%

Selective Flotation of Elemental Sulfur from Pressure Acid Leaching Residue of Zinc Sulfide

Liu

Jiang

Zhang³

et al. 2021

Minerals

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An efficient flotation process was developed to selectively recover elemental sulfur from a high-sulfur pressure acid leaching residue of zinc sulfide concentrate. The process mineralogy analysis showed that the sulfur content reached 46.21%, and 81.97% of the sulfur existed as elemental sulfur which was the major mineral in the residue and primarily existed as pellet aggregate and biconical euhedral crystal. An elemental sulfur concentrate product with 99.9% of recovery and 83.46% of purity was obtained using the flotation process of one-time blank rougher, two-time agent-added roughers, and two-time cleaners with Z-200 as collector and Na2S + ZnSO4 + Na2SO3 as depressant. The flotation experiment using return water indicated that the cycle use of return water had no adverse effect on the flotation performance of elemental sulfur. The process mineralogy analysis manifested that main minerals in the residue directionally went into the flotation products. Most of elemental sulfur entered the concentrate while other minerals almost completely went into the tailing. Main valuable elements lead, zinc, and silver entered the tailing with sulfides and could be recovered by lead smelting. The proposed process can realize the comprehensive recovery of valuable components in the high-sulfur residue and thus it has wide industrial application prospect.

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Selective extraction of zinc, gallium, and germanium from zinc refinery residue using two stage acid and alkaline leaching

Cited by 46 publications

References 19 publications

Thin‐film solid‐phase microextraction of fluoxetine using a novel sorbent prepared by direct decoration of zeolitic imidazolate frameworks on the surface of polyacrylonitrile electrospun nanofibers

Thin‐film solid‐phase microextraction of fluoxetine using a novel sorbent prepared by direct decoration of zeolitic imidazolate frameworks on the surface of polyacrylonitrile electrospun nanofibers

A Study on the Mechanism and Kinetics of Ultrasound-Enhanced Sulfuric Acid Leaching for Zinc Extraction from Zinc Oxide Dust

Selective Flotation of Elemental Sulfur from Pressure Acid Leaching Residue of Zinc Sulfide

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