molybdenite concentrate copper leaching

Copper removal from molybdenite concentrate by sodium ...

molybdenite concentrate copper leaching grinding mill equipment An improved process is disclosed for the treatment of molybdenite concentrate to remove impurities of molybdenite dissolution of molybdenum in the concentrate Read more.

Acidic Leaching with Chlorate as Oxidizing Agent to ...

presses or vacuum filters (ceramic disk) the typical copper concentrate contains 25 ... Separation of special copper ores such as those containing molybdenite or with ... Flotation of non-sulfide copper minerals is rare because these ores are mostly subjected to hydrometallurgical copper recovery, for example, heap leaching. In Zambia ...

UP-GRADATION OF MoO3 COPPER, IRON, ZINC FROM …

molybdenite concentrate leaching, demonstrating the scarcity of information on this subject. 1.1. State of the art Several studies on molybdenite concentrate leaching have appeared in the literature. Cao et al. (2009) leached molybdenum from molybdenite concentrate (41.40% Mo, 31.40% S, 2.20% Cu) using a NaClO 3-

molybdenite concentrate copper leaching - …

molybdenite concentrate copper leaching - bnglobal.in An improved process is disclosed for the treatment of molybdenite concentrate to remove impurities, ... of molybdenite dissolution of molybdenum in the concentrate.

US7794677B2 - Reduction of copper content in the ...

May 03, 2013· 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 ; …

Bioleaching of 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.

Copper removal from molybdenite concentrate by …

The molybdenum leach plant at Teck Highland Valley Copper Partnership leaches copper minerals out of the molybdenum concentrate in order to …

Molybdenum Processing - imoa.info

The Anaconda Minerals Company operates a molybdenite and copper producing mine and mill facility near Tonopah, Nevada. Included with the milling facility is a ferric chloride leach plant for removal of copper mineralization from the molybdenite concentrates.

Comparative study on the selective chalcopyrite ...

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

Recovery of Rhenium and Molybdenum from …

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 ...

Investigation on selective rhenium leaching from ...

Many scholars have conducted experimental study flash furnace roasting molybdenite, and achieved satisfactory results, but no reports of industrialization. Using flash processing molybdenum concentrate roasting method is the use of flash furnace roasting production MoO3.

Traditional roasting process of molybdenite

Generally, molybdenite, which is frequently associated to copper sulfides, is a by-product in copper mining. At present, molybdenite flotation concentrates are obtained. The presence of chalcopyrite in a molybdenite concentrate drastically reduces its market value due to terms imposed by buyers.

Kinetics of Copper Removal from Sulfidized Molybdenite ...

The present research reports on the selective dissolution of copper and iron from a Chilean molybdenite concentrate using mesophilic, …

Leaching Archives - Metallurgist & Mineral Processing …

The possibility of selective leaching process was investigated during molybdenite flue dust leaching to recover its rhenium content. The results show that addition of alcohols to water makes the medium less favorable for molybdenum transfer into . ... concentrate associated with porphyry copper ores.

molybdenum concentrate impurities

leaching of the molybdenite concentrate seems to be an alternative applicable method of molybdenite processing. The effect of acid concentration on the leaching recovery of molybdenum is shown in Fig. 7. Ninety six percent leaching recovery of molybdenum is reached after 30 min of

Removal of Copper from a Molybdenite …

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. The copper dissolution process is very sensitive to …

LEACHING OF MOLYBDENITE CONCENTRATE BY …

Sep 14, 2010· 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 …

Up-gradation of MoO3 and separation of copper, iron, …

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 solution to dissolve the copper and lead contaminants present.

Remove Copper from Moly by Ferric Chloride Leaching

The molybdenite concentrate is leached with nitric acid and subjected to solvent extraction to recover and separate rhenium and molybdenum from the leached liquor. The effects of pH and the chemicals' concentration on extraction characteristics of Mo and Re are investigated to define the best condition for selective extraction of these metals.

Molybdenum Processing - imoa.info

-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 ...

Hydrometallurgical recovery of molybdenum from …

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 …

Molybdenite concentrate cleaning by copper sulfation ...

Flotation separates the metallic minerals from the gangue this way and – in the case of copper/ molybdenum ores – separates molybdenite from copper sulphide. The resulting MoS 2 concentrate contains between 85% and 92% MoS 2. Further treatment by acid leaching can be used to dissolve impurities like copper and lead if necessary.

process flow chart concentrate molybdenum production ...

Copper removal from molybdenite concentrate by sodium dichromate leaching Ruiz, M.C; Padilla, R 1998-05-01 00:00:00 Molybdenite flotation concentrate was leached with sodium dichromate–sulfuric acid solutions in order to remove the copper sulfide impurities. The experimental results indicated that the temperature has a large …

Molybdenum removal from copper ore concentrate by sodium ...

leaching of the molybdenite concentrate seems to be an alternative applicable method of molybdenite processing. The effect of acid concentration on the leaching recovery of molybdenum is shown in Fig. 7. Ninety six percent leaching recovery of molybdenum is reached after 30 min of

(PDF) Selective copper-iron dissolution from a molybdenite ...

Further treatment by acid leaching can be used to dissolve impurities like copper and lead if necessary. ... Large rotary rakes move the molybdenite concentrate to promote the chemical reaction. Desulfurisation systems such as sulfuric acid plants or lime scrubbers remove sulfur dioxide from the effluent roaster gases. ... Some of the by ...

Hydrometallurgical recovery of molybdenum from …

The bioleaching of the molybdenite concentrate at 3% (w/v) Molybdenite leaching pulp density yielded 97% dissolution of Cu in the presence and 55% in …

Mechanism and leaching kinetics of molybdenite …

The electrodes were prepared from both the as-received molybdenite concentrate and the bioleaching and chemical leaching residues. In order to start with a compact electrode, 0.1 g of mineral sample was mixed with 0.9 g of a conductor material (graphite) in 5 ml of chloroform.