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Copper Sulfide

All copper sulfides require the presence of Fe 3+ and O 2 as oxidizing agents for leaching to occur. The copper sulfide is oxidized by Fe 3+.The resulting Fe 2+ is reoxidized to Fe 3+ by O 2.The Fe(II)/Fe(III) redox couple acts in a catalytic manner in these reactions (shown for elevated-temperature reaction conditions where the sulfur-containing product is …

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The Direct Leaching of Nickel Sulfide Flotation Concentrates …

the flotation-smelting-matte refining process for treatment of nickel sulfide ores is presented in Figure 1. There is great deal of variation in the standard flow sheet with respect to flotation practice (i.e. mineralogy, liberation size, reagents, etc.) and converter matte refining, however concentrate smelting is

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Recovery of Copper from Ammoniacal Leachates by Ion Flotation …

From the generated pregnant leach solution, it was possible to selectively separate 85% of copper to the phase by ion flotation, with sodium dodecyl sulfate (SDS) surfactant, as colloidal copper(II) tetraamine dodecyl sulfate under the optimized conditions: [SDS] total = 5.85 mmol L −1, [EtOH] = 0.5 % (v/v), t total = 5 h, flotation ...

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Use of ZnSO4 and SDD mixture as sphalerite depressant in copper flotation

Under such conditions, a copper concentrate assaying 30.21% Cu with 86.79% recovery was achieved from the Cu-Zn sulfide flotation system, and this concentrate had a very low Zn grade of 4.20% with ...

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Minerals | Free Full-Text | Sustainable Use of Copper Resources …

The global market has announced copper as a modern energy metal and finds its extensive utilization in the construction industry, electrical wiring, power transmission lines, alloying, anticorrosive coating, heat exchangers, refrigeration tubing, etc. Copper ore is primarily beneficiated from sulphide mineral deposits. Due to high-grade …

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Effect of Cu(II) ions on millerite (β-NiS) flotation and …

The source of copper ions in the flotation process can be either a deliberate addition into the process water to activate the mineral with economic interest such as …

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Effect of Cu(II) ions on millerite (β-NiS) flotation and surface

Copper(II) nitrate trihydrate (Cu(NO 3) 2 ·3H 2 O, 99%, ACROS Organics) was used as the source of the Cu(II) ions. Potassium. Millerite flotation with Cu and KEX. Fig. 2(A) shows the millerite flotation recovery and average pulp potential as a function of Cu concentration with 10 × 10-6 M KEX at pH 9 and 12. Note that the pulp potentials ...

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A novel trithiocarbonate collector featuring high-temperature

The metallic copper powder was purchased from Shanghai Aladdin Reagent Co., Ltd. Deionized water was used throughout the experiments. 2.2. Micro-flotation of single minerals. The micro-flotation experiments were carried out on an XFG II 5–35 g type flotation cell (Wuhan Prospecting Machinery Co., Ltd.).

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Sorptive–Flotation of Copper(II) from Water Using Different Types …

Different types of powdered activated carbon, viz. charcoal (PACh), graphite (PG) and three samples (PACI, PACII and PACIII) prepared from olive stones generated as plant wastes and modified with aqueous oxidizing agents, viz. H2O2, HNO3 and (NH4)2S2O8, were separated from aqueous solution by flotation using oleic acid (HOL) …

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Removal of copper (II) from aqueous solutions by …

Abstract. Flotation is a separation technology for removing toxic heavy metal ions from aqueous solutions. Here a simple and rapid flotation procedure is presented for the …

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(PDF) Activation of high-iron marmatite in froth flotation by

Surface oxidation of sulfides and copper (Cu) activation are 2 of the main processes that determine the efficiency of flotation. The present study was developed with the intention to ascertain the role of the phenomena in the biomodification of sulfides by Acidithiobacillus ferrooxidans culture (cells and growth media) and their impact in bioflotation.

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An Improvement on Selective Separation by Applying …

It has been known that the power ultrasound is used as a pretreatment and rarely applied as a simultaneous method to improve grade and recovery during froth flotation processes. This work aimed at …

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(PDF) Dewatering of Copper Flotation Tailings: Effect of Feed …

Corbett, G. P., 2009, Fire Engineering ' s Handbook for Firefighter I and II, Tulsa, OK: PennWell. ... and collector concentration on the shear yield stress of copper flotation tailings at ...

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A study of the flotation characteristics of a complex copper ore

ii Abstract Kansanshi copper mine is situated in the north western province of Zambia. Weathering has given rise to a vertically zoned profile comprising leached, refractory, oxide, mixed and hypogene sulphide mineralisation. ... flotation performance in the treatment of the Kansanshi ore body. This required an in-depth

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Effect of grinding media and NaHS on copper recovery at …

The flotation behaviour of copper minerals in the Northparkes Mines copper-gold ore is dependent on grinding media (and hence grinding Eh) and aeration during conditioning. ... (II) oxidised sites were sulphidised to form Cu(I)-S while the Fe(III) oxidised sites remained unsulphidised, at 0.10 V vs. standard hydrogen electrode, upon ...

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Evaluating the sulphidisation and flotation of oxidised chalcopyrite

Interestingly, flotation of mixed mineral of copper sulfide and arsenic-bearing copper minerals shows that enargite and tennantite exhibit a higher floatability compared to chalcopyrite and ...

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Copper Flotation

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Effect of Cu(II) ions on millerite (β-NiS) flotation and surface

1. Introduction. Activation of sulphide mineral by copper(II) ions is a process in which copper ions can promote sulphide mineral floatability by rendering a stronger interaction with xanthate, or by affecting surface oxidation to preserve the surface hydrophobicity, making it easier for the mineral particles to attach to the air bubbles …

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Improving the performance of a low-grade porphyry copper ore flotation

A large porphyry copper flotation plant has been simulated using a flotation model developed from first principles using the hydrophobic force as a kinetic parameter (Huang et al., 2022, Gupta et al., 2022).The input to the simulation was the size-by-class liberation matrix (m ij) of a flotation feed, which was essential for predicting the size-by-class …

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Ion Flotation of Copper(II) and Lead(II) from …

Abstract. The present study aims to develop a simple, rapid and economic procedure for copper (II) and lead (II) removal under the optimum conditions …

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A Review of the Flotation of Copper Minerals

Flotation of sulphidic and oxidic copper minerals is reviewed, with particular reference to previous studies of refractory copper ore …

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Effect of Copper and Iron Ions on the Sulphidizing Flotation

The treatment of smelting slag has attracted much attention nowadays. This study investigates the influence of Na 2 S, CuSO 4, and FeCl 3 on sulphidizing flotation of copper oxide. The results show that a proper Cu 2+ concentration can increase the sulphidizing effect of copper oxide, while Fe 3+ inhibits the sulphidizing effect.

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The Challenges and Prospects of Recovering Fine Copper …

Flotation is a common mineral processing method used to upgrade copper sulfide ores; in this method, copper sulfide mineral particles are concentrated in froth, and associated gangue minerals are separated as tailings. However, a significant amount of copper is lost into tailings during the processing; therefore, tailings can be considered …

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The Adsorption of Cu Species onto Pyrite Surface and Its

The adsorption of Cu species onto pyrite surface and its effect on flotation were investigated by using microflotation tests, first-principle calculations, and XPS surface analysis. The results indicated that the flotation of pyrite appears to be activated with CuSO4 only at alkaline pH, while being depressed at acidic and neutral pH. …

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1 Froth Flotation – Fundamental Principles

Table 1: Grade/recovery performance of a hypothetical copper ore flotation process. Product % Weight % Cu Assay Feed 100 2.09 Concentrate 10 20.0 Tailings 90 0.1 (a) …

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Collectorless flotation of oxidized pyrite

Its flotation can also be enhanced by the activation of copper or lead ions emanating from other minerals. Depressants are generally required to selectively depress pyrite. In this article, a comprehensive review of the fundamental studies of depression mechanisms and effectiveness of commonly used reagent systems to depress pyrite is …

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The effect of clay minerals on the process of flotation of copper ores

There are some important differences between the flotation of copper ores and other applications. First, several types of mineral species that contain copper can be found (CuFeS 2, Cu 2 S, CuS, Cu 5 FeS 4, and Cu 3 AsS 4, among others) which respond differently to the oxidizing and reducing conditions of the particulate system. As a result ...

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The role of sodium sulfide in the flotation of pyrite depressed in

In copper-gold flotation plants, pyrite which is depressed in copper flotation is often floated subsequently with the addition of sodium sulfide (Na 2 S) to recover the associated gold. For the first time, this study investigated the role of Na 2 S responsible for the flotation of pyrite depressed in chalcopyrite flotation through flotation tests and …

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Removal of Copper(II) from Aqueous Solutions by …

Numerous techniques for removing and/or preconcentrating metal ions from aqueous solutions are available, including chemical precipitation, oxidation/reduction methods, …

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Xanthate interaction and flotation separation of H2O2-treated

This study investigated the effects of H 2 O 2 treatment on xanthate interaction and flotation separation of chalcopyrite and pyrite by making use of a series of laboratory flotation experiments and surface analysis techniques. Flotation test results showed that H 2 O 2 treatment influenced the flotation behaviors of the two minerals; …

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