molybdenite concentrate copper leaching

molybdenite concentrate copper leaching

Selective Leaching of Molybdenum from Bulk Concentrate

2021-11-26 · Molybdenum is mainly generated from molybdenite (MoS 2), the most primary mineral resource of Mo, usually associated with copper minerals [].More than 50% of Mo marketed is produced as a by-product in the copper industry [].High reliance of its production on the copper industry makes Mo subject to supply fluctuations because a drop in copper

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The selective leaching and separation of molybdenum

2013-11-1 · The grade of copper in the residue was 21.84%, with a recovery 99.93%. The technology of selective electro-oxidation leaching of molybdenum and recovery of copper from complex molybdenite concentrate is an effective separation method. The diffusion control model can be used to describe the process of leaching of molybdenum.

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Selective copper dissolution during bioleaching of ...

The leaching of the sulfidized molybdenite concentrate for 90 min at 100 °C dissolved 96% of the copper which yielded a final concentrate with less than 0.2% Cu.

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Kinetics of Copper Removal from Sulfidized Molybdenite ...

2014-8-26 · Thus, in the present study, the pretreated (sulfidized) molybdenite concentrate becomes prone to easier leaching of the copper. In this regard, Padilla et al.[] have shown that molybdenite concentrates containing high contents of copper ranging from 3 to 8 pct can be purified by this method reducing the copper content to values as low as 0.2 pct in leaching with

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The solvent extraction separation of molybdenum and

1995-8-1 · An optimum pH of 1.9 was determined for copper extraction. From loaded solvent, this metal is easily stripped with copper-containing concentrate sulfuric acid solutions to give a pregnant solution suitable for final recovery of metal by electrolysis. Keywords Molybdenum, copper, solvent extraction, extractive metallurgy, molybdenite, leaching.

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Reduction of copper content in the molybdenite

Methods and systems for removing copper minerals from a molybdenite concentrate. One embodiment provides leaching copper from the molybdenite concentrate with a leaching solution comprising ferric chloride, removing molybdenite from the leaching solution, introducing an acid into the leaching solution and introducing O 2, O 3, or a combination of both, into the leaching

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Mesophilic and thermophilic bioleaching of copper from a ...

2014-4-10 · 1. Introduction. Molybdenite (MoS 2) ores are the major sources of molybdenum and rhenium on a global scale.Molybdenite is frequently associated with copper sulfides and is often a by-product in copper mining. The bioleaching of molybdenite has generally proven to be relatively slow and with low yields (Tributsch and Bennett, 1981, Kelley, 1986, Askari Zamani et al.,

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Acid Pressure Leach Process for Copper Removal

sodium dichromate for copper leaching from a molybdenite concentrate containing 41.1 % molybdenum and 3.65 % copper in the form of chalcopyrite and covellite (CuS). About 95 % of copper was leached with little dissolution of molybdenum by sulfuric acid solution in the presence of Na2Cr2O7 for 90 min at 100 °C and a solid to liquid ratio of 1 ...

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Selective copper–iron dissolution from a molybdenite ...

2001-6-19 · The present research reports on the selective dissolution of copper and iron from a Chilean molybdenite concentrate using mesophilic, moderate and extreme thermophilic culture bacteria. From the resu...

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Processing of Copper-Containing Molybdenite

2021-1-26 · The paper discusses methods of processing copper-containing molybdenite concentrates. A process flow diagram based on roasting with sodium chloride (or carbonate) and subsequent water leaching is presented. The chemistry of sulfide interaction with salt additives is described. The effect of the roasting temperature on copper and molybdenum distribution

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Kinetics of Copper Removal from Sulfidized Molybdenite ...

2014-8-26 · Thus, in the present study, the pretreated (sulfidized) molybdenite concentrate becomes prone to easier leaching of the copper. In this regard, Padilla et al.[] have shown that molybdenite concentrates containing high contents of copper ranging from 3 to 8 pct can be purified by this method reducing the copper content to values as low as 0.2 pct in leaching with

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(PDF) Selective copper-iron dissolution from a

Selective copper-iron dissolution from a molybdenite concentrate using bacterial leaching July 2001 Journal of Chemical Technology & Biotechnology 76(7):723-728

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Reduction of copper content in the molybdenite

Methods and systems for removing copper minerals from a molybdenite concentrate. One embodiment provides leaching copper from the molybdenite concentrate with a leaching solution comprising ferric chloride, removing molybdenite from the leaching solution, introducing an acid into the leaching solution and introducing O 2, O 3, or a combination of both, into the leaching

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Acid Pressure Leach Process for Copper Removal

sodium dichromate for copper leaching from a molybdenite concentrate containing 41.1 % molybdenum and 3.65 % copper in the form of chalcopyrite and covellite (CuS). About 95 % of copper was leached with little dissolution of molybdenum by sulfuric acid solution in the presence of Na2Cr2O7 for 90 min at 100 °C and a solid to liquid ratio of 1 ...

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Kinetics of Copper Removal from Sulfidized Molybdenite ...

Molybdenite concentrates produced from porphyry copper deposits contain copper as an impurity in variable quantities. To produce a high-grade molybdenite concentrate, a chemical purification method is normally practiced. In this paper, a new alternative for the copper elimination from molybdenite concentrates containing chalcopyrite by sulfidation of the molybdenite

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Remove Copper from Moly by Ferric Chloride Leaching

2018-10-13 · The concentrate leaching system consists of the unleached concentrate day bin, concentrate repulp circuit, and the agitated leach tank circuit. Here molybdenum concentrates are slurried with hot ferric chloride leach

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Comparison of the Effect of NaClO3 and H2O2 on the ...

2020-7-23 · The molybdenite concentrate obtained from the Sarcheshmeh copper complex (Sarcheshmeh, Iran) was used as the source of molybdenum. The chemical composition obtained by XRF is presented in Table 1. As it is seen, the concentrate contains 52% Mo and 35% sulfur. Therefore, the molybdenum percentage in each experiment could be calculated readily.

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Process for purifying molybdenite concentrates - Brenda ...

The market standards for premium grade molybdenite concentrate require that the copper impurity be reduced to less than 0.15% and that the lead impurity be reduced to less than 0.05%. Applicants have already patented a leaching process for purifying molybdenite concentrates (cf. U.S. Pat. No. 3,674,424 of July 4, 1972 assigned to Brenda Mines Ltd.

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Selective copper–iron dissolution from a molybdenite ...

2001-6-19 · The present research reports on the selective dissolution of copper and iron from a Chilean molybdenite concentrate using mesophilic, moderate and extreme thermophilic culture bacteria. From the resu...

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(PDF) Mesophilic and thermophilic bioleaching of copper ...

Mesophilic and thermophilic bioleaching of copper from a chalcopyrite-containing molybdenite concentrate. International Journal of Mineral Processing, 2014. Olli Tuovinen. Download PDF. Download Full PDF Package. This paper. A short summary

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Selective copper dissolution during bioleaching of ...

The leaching of the sulfidized molybdenite concentrate for 90 min at 100 °C dissolved 96% of the copper which yielded a final concentrate with less than 0.2% Cu.

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Leaching and Kinetic Modelling of Molybdenite

2021-12-11 · Molybdenite (a mineral form of molybdenum (IV) sulfide, MoS 2) is a byproduct of froth flotation of porphyry copper and is the main source of molybdenum (widely used in steel alloys) and its compounds [1]. The standard process for the production of molybdenum involves roasting of molybdenite concentrate in air and subsequent reduction of the

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Selective copper–iron dissolution from a molybdenite ...

Selective copper–iron dissolution from a molybdenite concentrate using bacterial leaching Patricia Romano Department of Materials Science and Metallurgical Engineering, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain

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Reduction of copper content in the molybdenite

Methods and systems for removing copper minerals from a molybdenite concentrate. One embodiment provides leaching copper from the molybdenite concentrate with a leaching solution comprising ferric chloride, removing molybdenite from the leaching solution, introducing an acid into the leaching solution and introducing O 2, O 3, or a combination of both, into the leaching

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Remove Copper from Moly by Ferric Chloride Leaching

2018-10-13 · The concentrate leaching system consists of the unleached concentrate day bin, concentrate repulp circuit, and the agitated leach tank circuit. Here molybdenum concentrates are slurried with hot ferric chloride leach

Read More
Kinetics of Copper Removal from Sulfidized Molybdenite ...

Molybdenite concentrates produced from porphyry copper deposits contain copper as an impurity in variable quantities. To produce a high-grade molybdenite concentrate, a chemical purification method is normally practiced. In this paper, a new alternative for the copper elimination from molybdenite concentrates containing chalcopyrite by sulfidation of the molybdenite

Read More
Kinetics of copper dissolution in the purification of ...

The leaching of the sulfidized molybdenite concentrate for 90 min at 100 °C dissolved 96% of the copper which yielded a final concentrate with less than 0.2% Cu. Molybdenite dissolution was negligible in this leaching media, and less than 20% Fe was dissolved.

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Selective copper–iron dissolution from a molybdenite ...

2001-6-19 · The present research reports on the selective dissolution of copper and iron from a Chilean molybdenite concentrate using mesophilic, moderate and extreme thermophilic culture bacteria. From the resu...

Read More
Process for purifying molybdenite concentrates - Brenda ...

The market standards for premium grade molybdenite concentrate require that the copper impurity be reduced to less than 0.15% and that the lead impurity be reduced to less than 0.05%. Applicants have already patented a leaching process for purifying molybdenite concentrates (cf. U.S. Pat. No. 3,674,424 of July 4, 1972 assigned to Brenda Mines Ltd.

Read More