The pyrometallurgical recovery of zinc from the coarse-grained fraction of zinc ash by centrifugal force

Trpčevská, Jarmila; Hoľková, Blanka; Briančin, Jaroslav; Korálová, Katarína; Pirošková, Jana

doi:10.1016/j.minpro.2015.08.006

Cited by 21 publications

(7 citation statements)

References 16 publications

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“…In the galvanizing process, the casting, smelting and other metal industries generate large amounts of waste containing high amounts of zinc [1][2][3][4]. In the galvanizing process, while zinc and nickel are commonly used for metallic coating; Cadmium, copper, tin, chrome, gold and silver metals are also used [5].…”

Section: Introductionmentioning

confidence: 99%

“…It is one of several important ossicles and is also found in alluvial-volcanic rocks and sediments formed from them. Sediments can generally contain the heavy metals in the range of 3-12%, consisting of ilmenite, rutile, leucoxene, zircon and monazite [3][4]. Ti, which is a 57% lighter metal compared to steel, has low density (4.5 g/cm 3 ) and good hardness, has low thermal conductivity and expansion coefficient, high melting point (1660 °C).…”

Section: Introductionmentioning

confidence: 99%

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Determination of Titanium in Zinc ash by FAAS After Digested using Ultrasound-Assisted Extraction

Kurşun¹,

Dağci²,

Özcan³

2021

Kırklareli Üniversitesi Mühendislik Ve Fen Bilimleri Dergisi

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In this study, it is aimed to determine the amount of Ti (titanium) in waste ash samples taken from galvanizing factories by using flame atomic absorption (FAAS). Various time periods and different solvent mixtures were examined by using ultrasound-assisted extraction for digestion of zinch ash which taken from various processes of galvanizing metal sheet or pipe. The best solvent mixtures for Ti metal in galvanized waste was found HCl:

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Determination of Titanium in Zinc ash by FAAS After Digested using Ultrasound-Assisted Extraction

Kurşun¹,

Dağci²,

Özcan³

2021

Kırklareli Üniversitesi Mühendislik Ve Fen Bilimleri Dergisi

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“…Pyrometallurgical processes have traditionally been used for recovering metal from mineral concentrates, since these processes have metal recovery efficiencies of up to 99%. These methods involve several steps, including roasting, carbothermic reduction, reduction of sulfide ores, or metallothermic reduction, depending on the ore composition [ 8 , 9 ]. However, the production of sulfur dioxide and solid particles suspended in the air during combustion make these processes unfriendly to the environment [ 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

Study of the Electrooxidation of a Zinc Concentrate

2021

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Zinc has wide industrial applications; consequently, its extraction procedures have been extensively studied. Hydrometallurgy is one of the most common methods employed for zinc recovery. However, the electrooxidation of sphalerite and the effect of the pyrite content in the concentrate have not been investigated; thus, in this work, zinc recovery from low-iron sphalerite mineral with a relatively high pyrite content (EBHSS), in a sulfate medium was further explored. The reaction mechanism of the anodic dissolution of the EBHSS mineral was established by microelectrolysis using mineral carbon paste electrodes; these results were used to determine adequate conditions for the macroelectrolysis of the sample. The macroelectrolysis indicated that EBHSS has a low electrodissolution rate; additionally, different analyses of the species produced in the macroelectrolysis showed that the ohmic drop registered in the collector had no influence in the passivation of the EBHSS surface. It was also determined that the dissolution of EBHSS was driven by the charge transfer of the sphalerite particles, which are not very efficient for electronic conductivity. Experiments using doped EBHSS led to an increase of the electrodissolution rate, which consequently increased the recovered zinc.

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“…Trpcevska, et al [6] investigated metallic zinc recovery from the coarse-grained fraction of zinc ash from hot dip galvanizing using the pyrometallurgical process. A designed laboratory equipment which used centrifugal force and protective atmosphere of a nitrogen flow during the process of melting and separation of zinc was developed.…”

Section: Introductionmentioning

confidence: 99%

Recovery of Zinc From Zinc Dross Using Pyrometallurgical and Electrochemical Methods

et al. 2018

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R ECOVERY of zinc from its dross was investigated using electrochemical and pyrometallurgical methods. Almost 100% pure zinc was obtained using these methods. A small bench scale system for the investigating the recovery of zinc using pyrometallurgical methods was developed. The system based on the evaporation of zinc (in the dross) at 1050 o C and condensing zinc vapors into pure zinc in a separate crucible. Almost pure Zn (99.95%) is obtained using this method. Recovery of zinc was also performed using electrowinning from the acidified zinc sulfate bath and electrorefining of zinc dross anodes in the alkaline ammonia bath. In either method different parameters including current density and deposition time were addressed. Zinc powder of almost 100% purity was obtained.

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The pyrometallurgical recovery of zinc from the coarse-grained fraction of zinc ash by centrifugal force

Cited by 21 publications

References 16 publications

Determination of Titanium in Zinc ash by FAAS After Digested using Ultrasound-Assisted Extraction

Determination of Titanium in Zinc ash by FAAS After Digested using Ultrasound-Assisted Extraction

Study of the Electrooxidation of a Zinc Concentrate

Recovery of Zinc From Zinc Dross Using Pyrometallurgical and Electrochemical Methods

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