Distinguishing the Type of Ore-Forming Fluids in Gold

 — Pyrite geochemistry is crucial for the discrimination of the types of ore-forming fluids in gold deposits, such as metamorphic–hydrothermal fluids and magmatic–hydrothermal fluids. With the assistance of supervised machine learning algorithms, this application can be leveraged maximally. Here, laser ablation inductively …

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Flotation of Gold and Gold-Bearing Ores

 — The demand for sulfuric acid initiated by the booming uranium industry during the late 1960s provided the catalyst for the installation of pyrite flotation plants on numerous gold mines in South Africa (Bushell, 1970, Broekman et al., 1987).After roasting the pyrite flotation concentrate to generate sulfur dioxide for the sulfuric acid plant, the remaining …

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Chalcopyrite

Chalcopyrite is a copper iron sulfide (CuFeS 2) mineral with a brassy to golden yellow color (Fig. 1.36). Chalcopyrite contains 34.5% Cu, 30.5% Fe, and 35.0% S. The mineral is the principal source of copper metal, and one of the major source of sulfur. The mineral also contains traces of elements of gold and nickel and recovered in refinery.

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Froth Flotation of Chalcopyrite/Pyrite Ore: A Critical Review

 — Figure 4 shows the flotation kinetic constant of chalcopyrite without a collector and the concentration of metal dissolved in solution, ... The most common method of depressing pyrite is raising the pH of the pulp (to above pH 10.5). ... Without activation by copper, pyrite lowered its recovery with the three hydrophilic biopolymers. When the ...

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Leaching of a pyrite-based ore containing copper using …

 — The fact that the amount of iron dissolved is 5.4% (Fig. 2) indicates that approximately 1.1 g of pyrite reacted during the exothermic reaction (the mass corresponding to the dissolution of copper and other metals is negligible due to the high concentration of iron in the ore). Combining the heat absorbed by the solution and the …

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Depressing high-concentration pyrite in copper flotation

Raising pulp pH is a common method for pyrite depression when pyrite concentration in flotation feeds is low. Whether raising pulp pH can effectively depress high-concentration pyrite in copper flotation remained unanswered. Hence, this research examined the effect of grinding and flotation pH on copper flotation with a high pyrite concentration.

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Copper Pyrites are concentrated by:

 — This method is used for the concentration of Sulphide ores. (Eg: Copper pyrites, iron pyrites, Galena, Zinc blende etc.) Copper is mainly extracted from copper pyrites. After the concentration of its metal by froth flotation process, the metal is cooked in a current of air to eliminate arsenic, antimony and quite a bit of sulphur.

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Chemical leaching is useful in the concentration of:

Chemical leaching is useful in the concentration of bauxite. Froth floatation method is used for copper pyrites and galena because both are sulphide ore. Hydraulic washing method depends upon the difference in the specific gravity of mineral and gangue.This method is used for separating cassiterite from gangue. Hence, option (a) is the correct ...

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Selective Adsorption Mechanism of Ferric Ions on the …

 — When copper ores containing pyrite are crushed and ground, many unavoidable Fe3+ ions will be produced and enter the flotation process. At present, the adsorption mechanism of Fe3+ on chalcopyrite and pyrite surfaces is not clear. Here, the adsorption behaviors of Fe3+ on the surfaces of chalcopyrite and pyrite were …

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Copper Extraction Metallurgy: Mining, Concentration

Copper Extraction Metallurgy refers to the methods used to obtain copper. The increased use of copper in the industry can be observed due to its low price, high resistance, good ductility, and ease of work. An ore that is the most common when it comes to the extraction of copper is Chalcopyrite (CuFeS 2). But the amount of copper which is ...

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Extraction of Copper: Detailed Process

 — Concentration of Ores. ... Copper extracted by this method is combined with slag to create a material known as Matte Copper due to its matte look. ... Long-term exposure of copper pyrites to air and precipitation produces a diluted solution of copper sulphate. The addition of scrap iron can precipitate copper from this solution.

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