pyrite ore separation

Selective separation of chalcopyrite from pyrite using

1. Introduction. As an important metal raw material, copper is widely used in the fields of daily necessities, industries, and national defenses (Schipper et al., 2018).Chalcopyrite (CuFeS 2) is the primary source of commercial copper metal and it is often associated with pyrite in ore deposits (Ignatkina et al., 2018).In order to obtain high …

A case study of the separation of copper-gold sulfide ore from pyrite

In laboratory experiments, this new reagent system achieved a substantially better separation of copper-gold sulfide ore and pyrite than the conventional process program. First-principles calculations based on density functional theory (DFT) were used to understand the separation mechanism of the new reagent scheme.

Beneficiation of the gold bearing ore by gravity and flotation …

Gold concentration usually consists of gravity separation, flotation, cyanidation, or the combination of these processes. The choice among these processes depends on the mineralogical characterization and gold content of the ore. Recently, the recovery of gold using gravity methods has gained attention because of low cost and …

Recovery of Iron from Pyrite Cinder Containing Non-ferrous …

This study presents a new technique that uses high-temperature chloridizing -reduction-magnetic separation to recover iron from pyrite cinder containing non-ferrous metals. The effects of the reduction temperature, reduction time, and chlorinating agent dosage were investigated. The optimized process parameters were …

Fenton oxidation modification mechanism of pyrite and

For the beneficiation of copper sulfide ore, froth floatation is an important way for extracting the valuable copper sulfide minerals and typically involves the process of removing pyrite to gain a purified copper concentrate, commonly referred to as "Cu-S separation" [3]. In flotation plants, the effective removal of pyrite primarily ...

Electromagnetic separation is used in the concentration of: …

Electromagnetic separation is the method to concentrate the ore or to remove unwanted materials like sand and clay from the ore. Magnetic or electromagnetic separation is the technique based on differences in magnetic properties of the ore or gangue. The particles that are attracted with the magnetic field are separated out.

A New Innovative Method of Flotation Separation for High …

Galena–Pyrite Separation. Based on the previous studies, lime and calcium hypochlorite are good depressants for pyrite flotation . These reagents were applied individually in this research for the selective separation of galena from pyrite, and the results are displayed in Fig. 3a, b. Results show that both depressants could inhibit the …

Mineralogy and Innovative Flash Flotation Separation of Cu …

The results demonstrate that the ore consists of 35 categories of minerals, assaying Cu 7.99%, Pb 9.39%, and Zn 1.96% in the forms of chalcopyrite, galena, and sphalerite, respectively, and silver ...

Flotation of Copper Ores with High Cu/Zn Ratio: Effects of Pyrite …

Therefore, the application of N 2 gas to limit the galvanic interaction of copper sulfide minerals with pyrite could be a promising method to achieve Cu/Zn separation by effectively depressing sphalerite floatability in the actual processing of copper ores containing many mineralogical species such as several copper sulfide minerals and pyrite.

Froth Flotation of Chalcopyrite/Pyrite Ore: A Critical …

Pyrite, with the highest resting potential, acts as a cathode and is galvanically protected, while chalcopyrite, with a lower resting potential, acts as an anode [117,118,119]. This separation is difficult due …

Novel application of depressant sodium mercaptoacetate in …

Copper sulfide ore is one of the primary sources of copper in the world. Copper-sulfur ore is a common ore type in copper sulfide ores, usually referring to the ores containing both copper sulfide and iron sulfide in recoverable minerals. Chalcopyrite and pyrite are typical sulfide minerals in copper-sulfur ores [4], [5], [6].

Application and depression mechanism of sodium sulfite on galena-pyrite

In this study, Na 2 SO 3 and lime were used as pyrite depressants for the flotation separation of the lead and zinc ore. The influence of Na 2 SO 3 on pre-adsorbed EX was investigated through micro-flotation experiments, contact angle measurements, ultraviolet–visible spectroscopy (UV–Vis), and time of flight secondary ion mass …

Pyrite (Fool's Gold) | Properties, Formation, …

Pyrite formation and occurrence. Pyrite, also known as "fool's gold," is a common iron sulfide mineral with the chemical formula FeS2. It forms in a variety of geological settings through several …

Novel application of depressant sodium mercaptoacetate in …

Chalcopyrite and pyrite are typical sulfide minerals in copper-sulfur ores [4], [5], [6]. Commonly, it is difficult to separate chalcopyrite and pyrite by flotation because of the complex embedding relationship and similar natural floatability of chalcopyrite and pyrite minerals in the ore [7], [8], [9].

The Extraction of Copper

The method used to extract copper from its ores depends on the nature of the ore. Sulfide ores such as chalcopyrite ( CuFeS2 C u F e S 2) are converted to copper by a different method from silicate, carbonate or sulfate ores. Chalcopyrite (also known as copper pyrites) and similar sulfide ores are the commonest ores of copper.

Flotation separation of pyrite and chalcopyrite with …

In this regard, pyrite must be separated from chalcopyrite in the flotation process. Lime (CaO) is a common pyrite depressant used in the flotation separation of …

Copper and Pyrite Separation by Selective and Sequential …

A copper-pyrite mill in Canada uses the 12-cell No. 21 "Sub-A" Flotation Machine, shown above, for roughing, and a 2-cell No. 21 "Sub-A" Flotation Machine for cleaning to produce a fairly coarse pyrite concentrate ranging from 50-62% minus 200 mesh. Feed at the rate of 230-240 tons per day comes from the tailings of a zinc flotation …

Advances in depressants used for pyrite flotation …

Pyrite is separated from other minerals mainly by flotation. However, the hydrophilicity of pyrite is afected by many factors, causing it to easily enter the concentrate and …

Advances in depressants used for pyrite flotation …

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A reagent scheme for galena/sphalerite flotation …

WEBThese flotation results indicate that a reagent system comprised Zn 2+ and SO 3 2− as the depressants and ADD and AFF as the collectors can achieve efficient …

Fenton oxidation modification mechanism of pyrite and its …

It was found that H 2 O 2 presented the more positive effects on the flotation separation of pyrite and arsenopyrite [13]. To sum up, oxidation-based surface modification was critical in the separation of polymetallic sulfide ore. However, the improvement in oxidation efficiency, selectivity and the oxidation modification mechanism are need to ...

Mineralogy and Innovative Flash Flotation Separation of Cu …

Pyrite in complex metallic ore is a widely distributed sulfide on earth, commonly associated with copper, lead, and zinc sulfides, as well as gold and silver [1,2].The production of separate concentrates from ores containing economic amounts of copper, lead, and zinc is complicated [], especially for ores with high pyrite content …

Mineral Processing | SpringerLink

Mineral processing is the process in which chemical or physical methods are used to separate the useful minerals in the ore from the useless minerals (usually called gangue) or hazardous minerals, or to separate multiple useful minerals. In the early years, mineral processing was called mineral concentration or mineral engineering in China.

Recovery of iron from pyrite cinder by suspension …

Request PDF | On Nov 1, 2023, Wenbo Li and others published Recovery of iron from pyrite cinder by suspension magnetization roasting-magnetic separation method: Process optimization and mechanism ...

Froth Flotation of Chalcopyrite/Pyrite Ore: A Critical …

The essence is to enhance the hydrophilicity of the pyrite surface with the help of various depressants, thereby preventing the floating of pyrite to achieve its separation from valuable minerals....

A case study of the separation of copper-gold sulfide ore from pyrite

In this study, a novel process with Z200 as the collector and pyrogallic acid (PGA) as the inhibitor was innovatively proposed and applied to separate copper-gold sulfide ore and pyrite in Hubei ...

The flotation separation of galena and pyrite using …

Different from galena, serpentine has strong depression effect on all the three sizes of pyrite. So the flotation separation of fine grained galena and pyrite can be achieved. A concentrate with Pb grade of 65.09% and recovery of 67.72% can be achieved in the mixed minerals flotation when serpentine was added as depressant.

Minerals | Free Full-Text | Changing the Pulp Properties and …

The grinding process plays a crucial role in the floatability of mineral. The present study proposes a scheme to assist in the flotation separation of galena and pyrite by optimizing the choice of grinding media. The effects of grinding media (cast iron balls, steel balls containing 18% chromium, and steel balls containing 12% chromium) on the …

Advances in depressants for flotation separation of Cu-Fe

The flotation separation of Cu-Fe sulfide minerals at low alkalinity can be achieved using selective depressants. In the flotation system of Cu-Fe sulfide minerals, depressants usually preferentially interact with the pyrite surface to render the mineral surface hydrophilic and hinder the adsorption of the collector. This review summarizes …

Pyrite Flotation Separation and Encapsulation: A …

Pyrite flotation separation and encapsulation in tailings dams is proposed as a viable way to chemically stabilize tailings. Characterization of potential acid mine …

A case study of the separation of copper-gold sulfide …

acid (PGA) as the inhibitor was innovatively proposed and applied to separate copper-gold sulfide ore and pyrite in Hubei Province, China. In laboratory experiments, this new reagent system achieved a substantially better separation of copper-gold sulfide ore and pyrite than the conventional process program.