Hydrometallurgical recovery of lead from direct-to-blister copper flash smelting slag

Gargul, K.; Boryczko, Bożena; Bukowska, Andżelika

doi:10.1016/j.acme.2017.04.004

Cited by 12 publications

(5 citation statements)

References 2 publications

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“…Each of the leaching tests used optimized parameters obtained for processing the same flash smelting slag only without pre-treatment in sulfuric acid. In the case of acetic acid with the addition of urea, leaching parameters from [14] were used, in the case of the citric acid solution the data (temperature, citric acid concentration, process time, l/s ratio) from [15] were used, and the alkaline leaching was based on the parameters obtained in [16].…”

Section: (B) Lead Removal From the Materials After H 2 So 4 Leachingmentioning

confidence: 99%

Behavior of copper and lead during mineralurgical and hydrometallurgical processing of flash smelting slag

Gargul

Boryczko

Bukowska

et al. 2021

Archiv.Civ.Mech.Eng

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There are only a few smelters processing copper concentrates directly into blister copper. Despite the many advantages of this process, a serious challenge of this technology is the need to process the resulting flash smelting slag. It contains 12–15% copper and 2.5–4% lead. In this form, it cannot be considered as waste material and, therefore, a high-temperature reduction process is carried out. This decopperization process is energy- and time-consuming. The use of mineralurgical and hydrometallurgical processes, selective enrichment of the appropriate slag fractions in copper and lead, followed by its hydrometallurgical processing and recovery of Cu and Pb could be an interesting supplement to the methods used so far. The article presents results of research on the possibility of separation of useful components from copper slag using the original method of sieve analysis, gravitational enrichment and magnetic separation. Preliminary results of tests were made on a laboratory scale. Then, selective leaching of copper and lead from flash smelting slag was carried out, obtaining very promising results.

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Section: (B) Lead Removal From the Materials After H 2 So 4 Leachingmentioning

confidence: 99%

Behavior of copper and lead during mineralurgical and hydrometallurgical processing of flash smelting slag

Gargul

Boryczko

Bukowska

et al. 2021

Archiv.Civ.Mech.Eng

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“…The highest leaching rate of lead reached 99%. Gargul et al 28 used acetic acid to selectively leach lead from copper ash. Palden et al 29 used ethylenediamine tetraacetic acid (EDTA) to leach lead based on the high complexability of EDTA.…”

Section: Introductionmentioning

confidence: 99%

“…The highest leaching rate of lead reached 99%. Gargul et al . used acetic acid to selectively leach lead from copper ash.…”

Section: Introductionmentioning

confidence: 99%

Recyclable Recovery of Lead from Zinc Hydrometallurgy Residue: By NH₄Cl-MgCl₂ Leaching and Novel Cyclone-Electrowinning

Liao,

Li,

Liu

et al. 2024

Ind. Eng. Chem. Res.

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Lead sulfate residue, generated from the leaching of low-grade zinc oxide derived from rotary kilns with a lead content of 35−45%, is toxic and hazardous. Nonetheless, it also constitutes a valuable secondary lead resource. In this study, a novel, recyclable method was employed to recover lead. The results of the Response Surface analysis demonstrated that the leaching rate of lead achieved 97% when the main leaching reagent NH 4 Cl was 200 g L −1 , the assistant leaching reagent MgCl 2 was 140 g L −1 along with the leaching time of 1.5 h and temperature of 90 °C by utilizing CaCl 2 as a sulfate radical precipitator and fixing a liquid−solid ratio of 20:1. Lead powder was obtained by utilizing a novel upsidedown cyclone-electrowinning method without harmful gas emission. The current density in relation to current efficiency (CE) and power consumption was also investigated. The electrolyte could be recycled back for leaching after ammonia supplementation, thus forming a circular procedure, providing an effective and environmentally friendly method for disposing the lead sulfate residue.

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“…Erdenebold et al investigated the recovery of iron from copper slag [ 11 , 12 , 13 ]. Busolic et al obtained Cu–Fe alloy from copper flash slag, with the aim to reduce the Cu content and obtain iron [ 14 ]. Heo et al recovered iron from slag and the Fe recovery was about 90 wt.% [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Desulfurization of Cu–Fe Alloy Obtained from Copper Slag and the Effect on Form of Copper in Alloy

Zhang

Feng²,

Zhang³

2022

Materials

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In order to realize the high-value utilization of copper slag, a process for preparing Cu–Fe alloy through the reduction of copper slag is proposed. The sulfur in the alloy exists in the form of matte inclusions, which is different from sulfur in molten iron. The reaction of CaO with Cu2S is difficult. It is necessary to add a reducing agent to promote desulfurization. To avoid the introduction of other elements, Fe‒Mn and CaC2 additions were used as desulfurizers for the desulfurization of Cu‒Fe alloy. The thermodynamics of the desulfurization reaction were calculated and the experimental process was studied. It was found that the Gibbs free energy of desulfurization reactions was negative for Fe‒Mn and that CaC2 can reduce the sulfur in the alloy to 0.0013% and 0.0079%, respectively. The desulfurization process affected the shape of copper in the alloy. Part of copper in this alloy exists in the form of nano-copper spheres, and the size of the spheres is found to increase after desulfurization. Reducing agents can facilitate the desulfurization process of stable sulfides.

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Hydrometallurgical recovery of lead from direct-to-blister copper flash smelting slag

Cited by 12 publications

References 2 publications

Behavior of copper and lead during mineralurgical and hydrometallurgical processing of flash smelting slag

Behavior of copper and lead during mineralurgical and hydrometallurgical processing of flash smelting slag

Recyclable Recovery of Lead from Zinc Hydrometallurgy Residue: By NH₄Cl-MgCl₂ Leaching and Novel Cyclone-Electrowinning

Desulfurization of Cu–Fe Alloy Obtained from Copper Slag and the Effect on Form of Copper in Alloy

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Hydrometallurgical recovery of lead from direct-to-blister copper flash smelting slag

Cited by 12 publications

References 2 publications

Behavior of copper and lead during mineralurgical and hydrometallurgical processing of flash smelting slag

Behavior of copper and lead during mineralurgical and hydrometallurgical processing of flash smelting slag

Recyclable Recovery of Lead from Zinc Hydrometallurgy Residue: By NH4Cl-MgCl2 Leaching and Novel Cyclone-Electrowinning

Desulfurization of Cu–Fe Alloy Obtained from Copper Slag and the Effect on Form of Copper in Alloy

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Recyclable Recovery of Lead from Zinc Hydrometallurgy Residue: By NH₄Cl-MgCl₂ Leaching and Novel Cyclone-Electrowinning