molybdenite concentrate copper leaching


Selective copper–iron dissolution from a molybdenite Optimal copper–iron dissolution is obtained using extreme thermophilic microorganisms and low pulp density 2% w/v Total selective dissolution of chalcopyrite is achieved which leads to a pure molybdenite concentrate being obtained -molybdenite concentrate copper leaching-,US3674424A Process for purifying molybdenite -In the treatment of a molybdenite concentrate for the removal of impurities from the group copper calcium bismuth and iron therefrom a process comprising subjecting said concentrate to leaching with an aqueous solution of at least one oxidizing metal chloride selected from the group consisting of cupric chloride and ferric chloride said …… Get More

Selective copper–iron dissolution from a molybdenite

Optimal copper–iron dissolution is obtained using extreme thermophilic microorganisms and low pulp density 2% w/v Total selective dissolution of chalcopyrite is achieved which leads to a pure molybdenite concentrate being obtained

US3674424A Process for purifying molybdenite

-In the treatment of a molybdenite concentrate for the removal of impurities from the group copper calcium bismuth and iron therefrom a process comprising subjecting said concentrate to leaching with an aqueous solution of at least one oxidizing metal chloride selected from the group consisting of cupric chloride and ferric chloride said

Separation of rhenium from electric-oxidation leaching

Separation of rhenium from electric-oxidation leaching solution of molybdenite friendly hydrometallurgy technique for molybdenite concentrate which has moderate reacting conditions and high recovery of metals 5 The objective of this work Dexing Copper Mine Jiangxi Province China

Copper-Molybdenum ores Danafloat Home

Copper-Molybdenum ores Molybdenite MoS2 is the predominant economic molybdenum mineral While naturally very hydrophobic and can effectively be floated with just frother addition of a hydrocarbon oil extender enhances its recovery Separation and upgrading the molybdenite from the bulk copper-molybdenite concentrate is generally

Roasted Molybdenite Concentrate vibrating sieve separator

Roasted Molybdenite Concentrate MOLYOXIDE MoOx •Powder •Briquettes PRODUCTFORM •Bags-3000lbNet •Drums-300lbMo •Cans-20lbMo •Otherpackaging availableuponrequest RioTintoproducesaluminum copper diamonds gold silver molybdenum industrial minerals energyandironore Thecompany employsover65 000employeesglobally

US7794677B2 Reduction of copper content in the

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 solution

Removal of Copper from a Molybdenite Concentrate by

copper typically needs to be 0 5% or less 1 2 In this study the refining of molybdenite by leaching of copper in chloride solution was investigated on a molybdenite-bearing flotation concentrate containing 6 1% copper as chalcopyrite

UP-GRADATION OF MoO3 COPPER IRON ZINC FROM ROASTED

Up-Gradation of MoO3 and Separation of Copper Iron Zinc from Roasted Molybdenum Ore by a Leaching Process 393 Brazilian Journal of Chemical Engineering Vol 30 No 02 pp 391 397 April June 2013 oxide with improved content was obtained by a

Removal of Metallic Impurities from Off-Grade Copper

An off-grade copper concentrate with chalcopyrite tennantite and molybdenum was selected as the raw material in this work to better understand the leaching behavior of metals in the alkaline leaching process

process flow chart concentrate molybdenum production

A method of treatment or purification of a molybdenum concentrate also containing a copper-molybdenum concentrate to a flotation process to produce a float Figure 1 is a flow diagram of a molybdenum and copper recovery process

Copper removal from molybdenite concentrate by sodium

From the experimental results the following can be concluded Copper impurities can be removed selectively from a molybdenite concentrate by leaching with H 2 SO 4 –Na 2 Cr 2 O 7 solutions with negligible dissolution of molybdenum

Recovery of Molybdenum & Rhenium From Molybdenite

Molybdenum-rhenium extraction was unaffected by presence of chalcopyrite in the molybdenite concentrate however molybdenum extraction declines if the copper content as chalcocite exceeds 7 pct High-purity molybdenum and rhenium compounds can be recovered from the electrolyzed reaction mass by liquid-solid separation solvent extraction

Leaching and Kinetic Modelling of Molybdenite Concentrate

Iran J Chem Chem Eng Vol 33 No 2 2014 Leaching and Kinetic Modelling of Molybdenite Concentrate Using Hydrogen Peroxide in Sulfuric Acid Solution

Leaching behavior of rhenium and molybdenum from

The dust from the roasting of molybdenite was employed to investigate the leaching behavior of rhenium and molybdenum Leaching experiments were done by varying optimum parameters such as reaction time NaOH concentration and leaching temperature

Molybdenum production PROMETIA

Leaching H 2 SO 4 Ammonia Converting molybdenite concentrate to ferro-molybdenum with the help of a melt of ferromanganese or a mixture of ferromanganese and iron in an electric arc furnace induction • Why not direct leaching Mo in copper slag 2FeO•MoO2 Fe3O4 spinel difficult to be processed

Intensified bioleaching of low-grade molybdenite

Intensified bioleaching of low-grade molybdenite concentrate by ferrous sulfate and pyrite Juan Yu* Hong-Ying Yang Lin-Lin Tong porphyry copper ores or skarn type copper ores As a result molybdenite concentrates are usually obtained as by-pro-ducts of separating flotation 1 The process of roasting- of low-grade molybdenite

Recovery of Rhenium and Molybdenum from Molybdenite

Recovery of Rhenium and Molybdenum from Molybdenite Roasting Dust Leaching Solution by Ion Exchange Resins Ion exchange separation of rhenium using Purolite A-170 and Purolite A-172 was carried out from the dust leach solution of molybdenite concentrate Different parameters such as effect of contact time equilibrium pH and solid liquid

LEACHING OF MOLYBDENITE CONCENTRATE BY HYPOCHLORITE A

LEACHING OF MOLYBDENITE CONCENTRATE BY HYPOCHLORITE A MODIFIED APPROACH Introduction Low grade molybdenite concentrates recovered from porphyry copper ores contain copper suphides in various amounts Selective dissolution of molybdenum values has been achieved by sodium hypochlorite generated externally or electrolytically generated in situ

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