separation pyrite sulfide

Kinetic Studies of Sulfide Mineral Oxidation and Xanthate

Sulfide minerals are a major source of metals; however, certain sulfide minerals, such as pyrite and pyrrhotite, are less desirable. Froth flotation is a commonly used separation technique, which requires the use of several reagents to float and depress different sulfide minerals.

A novel method to achieve the flotation of pyrite from

Oct 01, 2020 · Lizardite is a magnesium silicate mineral commonly associated with sulfide minerals, such as pentlandite, chalcopyrite and pyrite (Liu et al., 2018). Currently, flotation is a common method to separate lizardite from these sulfide minerals (Wei et al., 2019).

Minerals | Free Full-Text | Liberation of Gold Using Microwave-Nitric Acid Leaching and Separation-Recovery of Native Gold by Hydro-Separation

The purpose of this study was to liberate gold from sulfide minerals in a gold concentrate through microwave-nitric acid leaching and to separate the light minerals in an insoluble residue using a hydro-separation process. The representative sulfide minerals in …

Surface chemical studies on selective separation of pyrite

Selective separation of pyrite and galena from mixture of the two minerals was achieved through interaction with cells and metabolic products from a culture of Paenibacillus polymyxa. Adsorption of cells and metabolic products onto minerals and electrokinetic studies of minerals after interaction wi …

Effect of calcium hypochlorite on flotation separation of

Feb 01, 2019 · Furthermore, the efficient separation of covellite from pyrite is advantageous for the recovery of copper and enhances its economic value. Therefore, an effective method for the separation of covellite from pyrite by flotation is required. The selective flotation separation of sulfide minerals mostly relies on the use of various depressants.

The galvanic interaction between chalcopyrite and pyrite in

Pyrite, a gangue mineral, is commonly associated with valuable base metal sulfide minerals and the separation of pyrite from these valuable sulfide minerals by flotation is difficult.

A Novel Mineral Flotation Process Using Thiobacillus ferrooxidans

With high-pyrite mixtures, in the presence of T. ferrooxidans, 94.3% of the pyrite was rejected from the mixture and recovered as tailing whereas 82.2 to 97.2% of the other minerals remained as froth. Separation by flotation with T. ferrooxidans increased the

Pyrite - Uses, What Is It? | What Is Fool's Gold?

Iron sulfide, better known as pyrite or fool's gold, could have a new lease on the high life after researchers turned it into a magnet using an electrical treatment. Physicists and chemical ...

Pyrite formation from FeS and H2S is mediated through

Pyrite is the most abundant iron−sulfur mineral in sediments. Over geological times, its burial controlled oxygen levels in the atmosphere and sulfate concentrations in seawater. However, the mechanism of pyrite formation in sediments is still being debated. We show that lithotrophic microorganisms can mediate the transformation of FeS and H2S to FeS2 at ambient temperature if metabolically ...

PDF) Selective flotation of chalcopyrite from pyrite using diphosphonic

Pyrite, a gangue mineral, is commonly associated with valuable base metal sulfide minerals and the separation of pyrite from these valuable sulfide minerals by flotation is difficult.

Evaluation of the Use of Recycled Vegetable Oil as a Collector Reagent in the Flotation of Copper Sulfide

Separation of minerals by froth flotation techniques depends primarily on the differences in the wettability of particles. The most ... Pyrite FeS2 13.0 Chalcopyrite CuFeS2 5.7 2.2. Chemical Reagents and Aqueous Media The collector reagents used in this ...

sodium sulfide usage in the flotation for ore dressing

Gold and silver ore sulfide minerals often symbiotic especially gold and pyrite are closely dependent relationship. Since the surface of pyrite with semiconductor properties and certain electronic transmission capabilities but also through electrostatic surface of pyrite with HS-S0 CLP EHS-S0 compare 15 in pulp pH in the range of 813 pyrite ...

FLOTATION SEPARATION OF ARSENOPYRITE FROM PYRITE

In many parts of the world, pyrite and arsenopyrite occur together in sulfide ores either as the only sulfide minerals or in conjunction with other valuable sulfides. It is desirable to produce separate concentrates of the various sulfide minerals, including pyrite and arsenopyrite so that the contained desirable metals can be recovered economically.

How are pyrite and zircon separated by using physical method?

If the grain size is appropriate for a manual sorting by eye, separation under the stereomicroscope is the method of choice due to the striking metallic luster of the Fe sulfide.

WO1993010904A1 - Flotation separation of arsenopyrite from

Arsenopyrite is separated from a mixture with pyrite by contacting the mixture with a sulfitic agent providing HSO3- ions at elevated temperature and pH below about 8 for a period sufficient to impart a selective depression property to the arsenopyrite.

Selective Attachment of Leptospirillum ferrooxidans for Separation of Chalcopyrite and Pyrite

However, EPS supernatant extracted from L.f grown on chalcopyrite, conditioned for 48 h, provided the best separation efficiency by the selective depression of pyrite resulting in 95.8% Cu recovery. Polysaccharide-rich EPS selectively attaches to pyrite within 48 h, depressing its floatability and ensuring successful separation with a PIPX collector.

Selective adsorption mechanism of salicylic acid on pyrite

Selective adsorption mechanism of salicylic acid on pyrite surfaces and its application in flotation separation of chalcopyrite from pyrite February 2020 Separation and Purification Technology 240 ...

Pyrite - Wikipedia

The mineral pyrite (/ ˈpaɪraɪt /), or iron pyrite, also known as fool's gold, is an iron sulfide with the chemical formula Fe S 2 (iron (II) disulfide). Pyrite is the most abundant sulfide mineral. Pyrite's metallic luster and pale brass-yellow hue give it a superficial resemblance to gold, …

US5171428A - Flotation separation of arsenopyrite from

Arsenopyrite is separated from a mixture with pyrite by contacting the mixture with a sulfitic agent providing HSO 3 - ions at elevated temperature and pH below about 8 for a period sufficient to impart a selective depression property to the arsenopyrite. On addition of a collector the pyrite is rendered floatable, enabling froth flotation to achieve a concentrate rich in pyrite and tailings ...

The Determination of Sulfate and Sulfide Sulfur in Rocks or

sphalerite, pyrite, barite, and gypsum cannot readily be analyzed for sulfide and sulfate by any published method. Approaches designed to isolate sulfide sulfur followed by the deter mination of the sulfate sulfur were tried and found wanting. For example, attack

US3847357A - Separation of copper minerals from pyrite - Google

A process of separating copper minerals from pyrite wherein a flotation concentrate containing copper minerals and pyrite is reground in the presence of lime and subsequently conditioned at a pH of 12.0 or more for a predetermined period sufficient to depress the ...

PDF A study on selective flotation in low and high pyritic

Introduction Frothflotationisaphysicochemical methodwidelyused in mineral processing technologies to separate finely ground valuable minerals from a mixture with gangue minerals. In copper sulphide...

Application of Carrier Micro Encapsulation in Coal Preparation and Sulfide mineral processing

cause the acid rain formation. The separation of pyrite from metal sulfide ore is also recommended to economically extract copper or other metal. Therefore, pyrite is rejected as a gangue mineral from the valuable minerals by physical separation

US Patent Application for SEPARATION OF COPPER MINERALS FROM PYRITE USING AIR-METABISULFITE TREATMENT

In this manner, a highly selective flotation separation of different sulfide minerals can be realized. ... wherein the second sulfide is an iron sulfide mineral, wherein the iron sulfide mineral is at least one of pyrite, marcasite, arsenopyrite, and pyrrhotite, ...

The Critical Role of Pulp Density on Flotation Separation of

A nickel-copper sulfide system usually coexists with serpentine in deposits. Low nickel-copper recovery and high content of serpentine in concentration adversely affects subsequent metallurgical processes. In this study, test data showed different rheological results at various densities. When the solid ratio of sulfide to serpentine was 1:1, lower pulp density (20 wt %) contributed to better ...

CN105080728A - Flotation separation method of antimony sulfide

The invention discloses a flotation separation method of antimony sulfide and gold-bearing pyrite. Sodium hexametaphosphate is adopted as a dispersing agent, sodium silicate is used as a silicon...

Effect of sodium hexametaphosphate on separation of serpentine from pyrite

Effect of sodium hexametaphosphate on separation of serpentine from pyrite LU Yi-ping 1, ZHANG Ming-qiang2, FENG Qi-ming 1, LONG Tao , OU Le-ming , ZHANG Guo-fan 1. School of Mineral Processing and Bioengineering, Central South University, Changsha

Evaluation of green synthetic depressants for sulfide

Pyrite in valuable sulfide ores causes environmental problems by producing SO 2 emissions and acid rain during pyrometallurgical operations,,. Therefore, the main concern in the treatment of sulfide ore is focused on the removal of pyrite,.

The Application of Xanthate in Froth Flotation Process

In flotation of pyrite with xanthate, butyl xanthate is usually used. Generally, after the activator (copper sulfate) is added to the pulp, the mixed emulsifier of xanthate, pine oil and water can be added at one time, which is better than the multiple addition of the flotation reagent, and the dosage of the flotation reagent will be saved.

Minerals | Free Full-Text | The Critical Role of Pulp Density on Flotation Separation of Nickel-Copper Sulfide

Therefore, it seems that the influence of solid-in-density is crucial to the selective separation of sulfide ore and serpentine. Rheology, which provides much information about the hetero-coagulation between particles, has been extensively used to investigate the particle interactions in slurries of fluorite and quartz [ 12 ], galena [ 13 ], and clay minerals [ 14 ].

Pyrite formation and the measurement of sulfate reduction in salt

new, relatively specific assay for pyrite and elemental sulfur. Chromium(I1) in hot, strong-acid solution is used to reduce pyrite and elemental sulfur to hydrogen sulfide. The resulting hydrogen sulfide is easily dis- tilled off and assayed

US2342277A - Separation of pyrite, arsenopyrite, and pyrrhotite by flotation - Google Patents

Separation of pyrite, arsenopyrite, and pyrrhotite by flotation Download PDF Info Publication number US2342277A US2342277A US474491A US47449143A US2342277A US 2342277 A US2342277 A US 2342277A US 474491 A US474491 A US 474491A pyrite ...

Selective separation of galena and sphalerite from pyrite

Pyrite is readily floated due to its natural hydrophobicity or the collector-induced hydrophobicity. Pyrite floatability can also be enhanced by the activation of copper or lead ions either dissolved from complex sulfide minerals due to galvanic interactions or are present as contaminants in the processing water [3-8].

WO1993010904A1 - Flotation separation of arsenopyrite from pyrite

On addition of a collector the pyrite is rendered floatable, enabling froth flotation to achieve a concentrate rich in pyrite and tailings rich in arsenopyrite. WO1993010904A1 - Flotation separation of arsenopyrite from pyrite - Google Patents Download PDF ...

A review of the fundamental studies of the copper

A high pH, the correct reagent concentration and activation time and a short time delay between reagent additions is favourable for separation of sphalerite from pyrite. Sufficient oxidation potential is also needed (through O (2) conditioning) to maintain effective galvanic interactions between sphalerite and pyrite.

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