Oxidation Sulfuric Acid Autoclave Leaching of Copper Smelting Production Fine Dust

Karimov, К. A.; Набойченко, С. С.; Kritskii, Aleksei; Tret’yak, M. A.; Kovyazin, A. A.

doi:10.1007/s11015-019-00781-3

Cited by 17 publications

(5 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to Ahmed et al, 95% and 99% of copper were derived from secondary brass slag resources (Ahmed et al 2016). Karimov et al reported that by using sulfuric acid during twophase atmospheric and autoclave oxidation leaching, about 93% of copper and 96% of zinc can be leached from fine dust obtained during copper production (Karimov at al. 2019).…”

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

View full text Add to dashboard Cite

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.

show abstract

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

View full text Add to dashboard Cite

show abstract

“…The presence of arsenic in copper concentrates prevents their processing using traditional technologies. During pyrometallurgical processes, arsenic dust is formed [2][3][4][5][6][7][8][9][10][11][12][13]. It presents a significant danger to humans and the environment [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Nitric Acid Dissolution of Tennantite, Chalcopyrite and Sphalerite in the Presence of Fe (III) Ions and FeS2

et al. 2022

View full text Add to dashboard Cite

This paper describes the nitric acid dissolution process of natural minerals such as tennantite, chalcopyrite and sphalerite, with the addition of Fe (III) ions and FeS2. These minerals are typical for the ores of the Ural deposits. The effect of temperature, nitric acid concentration, time, additions of Fe (III) ions and FeS2 was studied. The highest dissolution degree of sulfide minerals (more than 90%) was observed at a nitric acid concentration of 6 mol/dm3, an experiment time of 60 min, a temperature of 80 °C, a concentration of Fe (III) ions of 16.5 g/dm3, and an addition of FeS2 to the total mass minerals at 1.2:1 ratio. The most significant factors in the break-down of minerals were the nitric acid concentration, the concentration of Fe (III) ions and the amount of FeS2. Simultaneous addition of Fe (III) ions and FeS2 had the greatest effect on the leaching process. It was also established that FeS2 can be an alternative catalytic surface for copper sulfide minerals during nitric acid leaching. This helps to reduce the influence of the passivation layer of elemental sulfur due to the galvanic linkage formed between the minerals, which was confirmed by SEM-EDX.

show abstract

“…Researchers have performed a signicant amount of research into the treatment and resource utilization of RCS y ash and smelting slag to make it harmless. 4,11,12 This research mainly includes water leaching, 13 acid leaching, [14][15][16][17] oxidation leaching, 18,19 bioleaching, 20,21 pressure oxidative leaching, 14 chloride leaching, 22 alkali leaching, 1 controlling potential leaching, 23 the leaching-extraction method and the leachingblast furnace smelting method. 24 The copper and zinc in RCS y ash and smelting slag can be leached using water or dilute sulfuric acid, and the leaching solution and leach residue can be treated using other methods.…”

Section: Introductionmentioning

confidence: 99%

Metal mobility and toxicity of reclaimed copper smelting fly ash and smelting slag

et al. 2021

View full text Add to dashboard Cite

show abstract

Oxidation Sulfuric Acid Autoclave Leaching of Copper Smelting Production Fine Dust

Cited by 17 publications

References 5 publications

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

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

Nitric Acid Dissolution of Tennantite, Chalcopyrite and Sphalerite in the Presence of Fe (III) Ions and FeS2

Metal mobility and toxicity of reclaimed copper smelting fly ash and smelting slag

Contact Info

Product

Resources

About