Leaching Of Copper From Tailings Using Ammonia

Use of Ammonia Salts in Selective Copper Extraction from …

This study investigated the usage conditions of five different ammonia salts as leaching reactants for the purpose of selective extraction of copper from tailings. For this purpose, the …

Use of Ammonia Salts in Selective Copper Extraction from …

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Ammonia Leaching: A New Approach of Copper …

Copper leaching from ore using ammonia should be followed by selective extraction of copper using the extraction agent in the solvent …

Novel treatment for mixed copper ores: Leaching ammonia – …

Ammoniacal leaching for dissolution of copper oxides. • The pH in leaching should be controlled between pH 9–10. • Ammonia leaching does not alter copper sulfides. • …

Use of Ammonia Salts in Selective Copper Extraction from Tailings

By addition of ammonia and oxygen, metallic copper and copper oxides are Fig. 3 Ammonia leaching of tailings (leaching time 120 min, solid/liquid ratio 1/10, a 20 °C; b 30 °C; c 40 °C; d 50 °C; e 60 °C) Mining, Metallurgy & Exploration As seen in the figure, with the increased concentration of ammonium hydroxide, there was a significant ...

Copper recycle from sulfide tailings using combined leaching of ammonia

As suggested by incomplete statistics, the typical amount of Au in gold tailings ranges between 0.2 and 0.6 g/t, the Fe grade of iron tailings ranges from 8 to 12 %, Cu concentration in copper ...

(PDF) Extraction of Gold and Copper from Flotation Tailings Using

This appeared to be linked with the ready dissolution/removal of copper during ammonia leaching. Proceedings of XXVIth International Mineral Processing Congress IMPC 2012; 01/2012. ... minerals Article Extraction of Gold and Copper from Flotation Tailings Using Glycine-Ammonia Solutions in the Presence of Permanganate Huan Li 1, Elsayed Oraby ...

Selective extraction of nickel and cobalt from disseminated …

DOI: 10.1016/j.mineng.2023.108418 Corpus ID: 263281019; Selective extraction of nickel and cobalt from disseminated sulfide flotation cleaner tailings using alkaline glycine-ammonia leaching solutions

Ammoniacal System Mechanisms for Leaching Copper from …

Ammonia leaching has not been carried out for converter slags. ... P. Pressure leaching of copper converter slag using dilute sulphuric acid for the extraction of cobalt, nickel and copper values. ... Buarzaiga, M.; Mihaylov, I. Co-treatment of converter slag and pyrrhitite tailings via high pressure oxidative leaching. J. Hazard. Mater. 2011 ...

Use of Ammonia Salts in Selective Copper Extraction from Tailings

Selective extraction of copper from tailings was successively investigated by Turan et al. [21] using a mixture of ammonia salts as leaching reactants and managed to obtain a copper recovery of 91 ...

AMMONIA LEACHING IN THE COPPER INDUSTRY: A …

Ammonia leaching was first used for recovery of non-ferrous metals such as copper from oxide ores or ores containing pure copper, but gradually the use of this …

Assessment of the Glycine Concentration for the Leaching of …

The use of glycine (C 2 H 5 NO 2) in the presence of thiourea (CH 4 N 2 S) for the leaching of base metals is under-researched. The aim of the study is to evaluate the influence of glycine concentration on the leaching of copper (Cu), zinc (Zn), and lead (Pb) contained in mining tailings in the presence of thiourea.

Leaching of copper from tailings using ammonia…

The leaching of copper from the tailings of Baifang Copper Mine in Hunan province in China by aqueous ammonia/ammonium chloride solutions has been studied. The tailings belong to a low-grade and high-alkaline copper ore. The effect of leaching time, the concentration of ammonia, solid/liquid ratio and temperature were investigated. The main important parameters in …

Copper recycle from sulfide tailings using combined leaching of ammonia

Article: Copper recycle from sulfide tailings using combined leaching of ammonia solution and alkaline bacteria Journal of Cleaner Production 189: 746-753 Copper recycle from sulfide tailings using combined leaching of ammonia solution and alkaline bacteria

Leaching kinetics of copper flotation tailings in aqueous …

The experiments of agitation leaching were carried out in aqueous ammonia/ammonium carbonate solution, to recover copper from the flotation tailings of …

Copper recycle from sulfide tailings using combined leaching of ammonia

DOI: 10.1016/J.JCLEPRO.2018.04.116 Corpus ID: 158555819; Copper recycle from sulfide tailings using combined leaching of ammonia solution and alkaline bacteria @article{Yin2018CopperRF, title={Copper recycle from sulfide tailings using combined leaching of ammonia solution and alkaline bacteria}, author={Sheng-hua Yin and Leiming Wang and …

Ammonia Leaching: A New Approach of Copper …

Leaching of copper from tailings using ammonia–ammonium chloride solution and its dynamics Ammonia– ammonium chloride Leaching time, the concentration of ammonia, solid/ liquid ratio and ...

Renewable ammonium chloride-induced calcium leaching of gold and copper

This study pretreated high-calcium gold-copper tailings by ammonia leaching to extract Ca 2+ and avoid product impurities caused by leaching of heavy metals. CO 2 carbonation was then used to produce high-purity vaterite CaCO 3. The active reaction components were determined by Gibbs free energy calculations. Additionally, the impact of ...

Leaching of copper from tailings using ammonia…

Leaching kinetics of copper flotation tailings in aqueous ammonia …

The experiments of agitation leaching were carried out in aqueous ammonia/ammonium carbonate solution, to recover copper from the flotation tailings of waste copper oxide residue. The main copper minerals contained in the flotation tailings are chrysocolla, malachite, and cuprite, with the copper grade of 1.12%.

Ammonia Leaching: A New Approach of Copper Industry in

Ammonia and ammonium salts have been recognized as effective leaching agents in hydrometallurgical processes due to low toxicity and cost, easy recovery and high selective recovery of metals. New research findings on considerable advantages of leaching by these agents and elimination of problems associated with acid leaching have resulted in a …

Extraction of Gold and Copper from Flotation Tailings …

from Flotation Tailings Using Glycine-Ammonia Solutions in the Presence of Permanganate Huan Li, Elsayed Oraby, Jacques Eksteen and Tanmay Mali Special Issue ... [11], glycine solution could selectively leach copper over gold as cupric glycinate (Cu(Gly)2) from gold–copper concentrate at room temperature and with a pH of 10.5–11. However ...

Use of Ammonia Salts in Selective Copper Extraction …

Keywords Copper .Extraction .Tailings .Leaching .Ammoniasalts 1 Introduction Copper production methods vary based on the characteristics ... In this study, the use of different ammonia salts for copper extraction from tailing was investigated. Although there are some studies about using ammonia salts for hydrometallurgi-

Leaching kinetics of low-grade copper ore with high-alkality …

The leaching kinetics of low-grade copper ore with high-alkality gangues was studied in ammonia-ammonium sulphate solution. The main parameters, such as ammonia and ammonium sulphate concentrations, particle size, solid-to-liquid ratio and reaction temperature, were chosen in the experiments. The results show that the increase of temperature, …

(PDF) Extraction of Gold and Copper from Flotation Tailings Using

This study presents the novel idea of a cyanide-free leaching method, i.e., glycine–ammonia leaching in the presence of permanganate, to treat a low-grade and copper-bearing gold tailing.

Ammonia Leaching: A New Approach of Copper Industry in

Copper Leaching | PDF | Ammonia | Chemical Reactions

Copper Leaching - Free download as PDF File (.pdf), Text File (.txt) or read online for free. This document reviews ammonia leaching in the copper industry. It provides a brief history of ammonia leaching, including some of the earliest industrial applications in the early 20th century. It also summarizes a few notable processes developed over time, such as the Gordon Process …

Leaching of copper from tailings using ammonia/ammonium …

The leaching of copper from the tailings of Baifang Copper Mine in Hunan province in China by aqueous ammonia/ammonium chloride solutions has been studied. The …

Copper recycle from sulfide tailings using …

Accepted Manuscript Copper recycle from sulfide tailings using combined leaching of ammonia solution and alkaline bacteria Shenghua Yin, Leiming Wang, Aixiang Wu, Eugie Kabwe, Xun Chen, Rongfu Yan PII: S0959 …

(PDF) Copper heap leaching: Process, principles and …

Given the above advantages, heap bioleaching is suitable for treating low-grade ores and tailings. ... Most copper minerals are amenable to leaching under atmospheric conditions. A critical ...

Ammonia leaching process for selective extraction of nickel …

Ammonia leaching primarily relies on the complexation of NH 3 with Ni 2+ and Co 2+ to generate stable ammonia complexes Ni(NH 3) 6 2+ and Co(NH 3) 6 3+ [23], [24]. Therefore, it is commonly used as a powerful reagent for the selective leaching of Ni and Co from materials that contain those metals as a result [25].