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pyrite depression in copper flotation

  • The depression of copper-activated pyrite in flotation by

    The depression of copper-activated pyrite in flotation by

    The depression of pyrite flotation is normally difficult especially when pyrite is activated by copper ions. In this study, different biopolymers, modified from lignosulfonate, were examined to

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  • Optimization of a Copper/Molybdenum Flotation Circuit

    Optimization of a Copper/Molybdenum Flotation Circuit

    Optimization of a Copper/Molybdenum Flotation Circuit by Depressing Pyrite from the Rougher Flotation Stage Using Different Scheme of Reagents A thesis submitted in partial fulfillment of the requirements for the degree of Master Of Science in Metallurgical Engineering by Wander A. Valderrama Dr. Carl C. Nesbitt/Thesis Advisor May 2020

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  • Physico-chemical models for activation, flotation and

    Physico-chemical models for activation, flotation and

    DOI link for Physico-chemical models for activation, flotation and depression of pyrite in copper flotation By A. A. Abramov, G. nal, Z. Doğan Book Mineral Processing on

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  • Pyrite depression by dextrin in flotation with xanthates

    Pyrite depression by dextrin in flotation with xanthates

    of carbonaceous pyrite in copper flotation, depression of lead in lead-copper bulk separation (Bulatovic, 2007) and depression of hematite and apatite in their reverse flotation against siliceous minerals (Lin and Burdick, 1988). Dextrin dosages of up to 1,400 g/Mg is reported

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  • Pyrite Depressant on copper ore - Froth Flotation

    Pyrite Depressant on copper ore - Froth Flotation

    Flotation of copper at different alkaline pH from 7 up to 10 and using different Xanthates as collector vs recovery of copper may give some clue. Minimum Pyrite obtained in copper concentrate is the starting point for further flotation testwork. Depressing Pyrite is always a tricky matter

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  • Pyrite Depression - Froth Flotation (Sulphide & Oxide

    Pyrite Depression - Froth Flotation (Sulphide & Oxide

    You can try bulk flotation of Pyrite and Zinc and then go for magnet separation. This will give two products, Sulphur (Pyrite) and Zinc con. May be Pyrite con may contain both Lead and Zinc in traces recovered in Smelter during Sulphur recovery. Try an aeration

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    Role of starch and metabisulphite on pure pyrite and pyritic copper ore flotation 43 occurred with 1.7 mg/ dm3, while 21% depression occurred with the same dosages of starch at pH 6.5 where pyrite flotation is expected to be weak at pH 10

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  • Sodium Metabisulfite MBS for pH Control and Pyrite

    Sodium Metabisulfite MBS for pH Control and Pyrite

    Aug 07, 2013 Below is a graph showing pH VS pyrite recovery at various collector addition rates. It is also used to prevent flotation of sphalerite by copper activation in the presence of Tennantite/Covellite in the ore. For pyrite flotation, you see maximum iron/pyrite depression using Sodium Metabisulfite/MBS takes effect at around pH 6

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  • Environmental Impact Variability of Copper Tailing

    Environmental Impact Variability of Copper Tailing

    Aug 27, 2021 producing the copper concentrate and pyrite-rich tailings that are deposited in the nearby tailings impoundment. This covers an area of about 50,000 m2 in the valley of a small stream tributary of the Fan I Madh river. The dump is contained downward by an earth dam. Till 2000, a second flotation line separated a pyrite concentrate from the

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  • The depression of pyrite in selective flotation by

    The depression of pyrite in selective flotation by

    Pyrite depression in copper ore flotation often requires large doses of inorganic depressants that lead to high toxicity, high costs, and low selectivity. Thus, this study offers a novel pyrite

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  • The Adsorption of Cu Species onto Pyrite Surface and Its

    The Adsorption of Cu Species onto Pyrite Surface and Its

    Jan 17, 2016 Copper ions precipitate the collector and reduce the concentration of collector available for pyrite flotation and thus depress the flotation of pyrite. On the other hand, previous studies have suggested that nonactivated pyrite exhibits an excellent flotation performance at acidic and neutral pH, and the adsorption of Cu 2+ on surface S active

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  • (PDF) Role of starch and metabisuphite on pure pyrite and

    (PDF) Role of starch and metabisuphite on pure pyrite and

    Flotation of copper-molybdenum sulphide ores in seawater entails critical challenges such as selective recovery of molybdenite, effective pyrite depression, and reducing the lime addition required

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  • Depression of lead-activated sphalerite by pyrite via

    Depression of lead-activated sphalerite by pyrite via

    Request PDF | Depression of lead-activated sphalerite by pyrite via galvanic interactions: Implications to the selective flotation of complex sulfide ores | Complex sulfide ores are typically

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  • Pyrite Depression in Copper Flotation

    Pyrite Depression in Copper Flotation

    Oct 08, 2015 Pyrite Depression in Copper Flotation. The Pyrite Depression in a Copper Only Flotation circuit is simple enough. If your froth flotation system only tries to recover chalcopyrite-copper, you need to bring the plant’s pH up to the other side (right side) of the PYRITE curve. The more flotation collector you have on, the higher you will need to increase that pH for effective pyrite depression

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  • Selectively Depress Copper-Activated Pyrite in Copper

    Selectively Depress Copper-Activated Pyrite in Copper

    Jan 26, 2021 Selectively Depress Copper-Activated Pyrite in Copper Flotation at Slightly Alkaline pH Abstract. Pyrite depression in the flotation of copper ores is difficult due to the activation of Cu 2+ ions on pyrite... Introduction. Copper sulphide ore deposits are of great economic significance for copper

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    Copper sulphides behave differently in flotation cells than copper oxides. Copper oxide minerals are generally porous with little mechanical strength. They occur in a conglomerate matrix or thin fracture fillings and end up in the slimes fraction of the ground ore feed (Poling, 1973)

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