Loading...

molybdenum rhenium leaching

Investigation on selective rhenium leaching from ...

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 aqueous phase. On the other hand, addition of small amounts of alcohols (515%) makes a noticeable separation of rhenium over molybdenum, but by ...

Read More ›

Separation of rhenium and molybdenum from molybdenite ...

In particular, at very low pH, rhenium is extracted selectively from solution, while the extraction of molybdenum is less than 10%. After removing rhenium, molybdenum was extracted with LIX984N. The selectivity of molybdenum extraction over other metals in solution was significant.

Read More ›

Recovery of Molybdenum and Rhenium Using Selective ...

Recovery of Molybdenum and Rhenium Using Selective Precipitation Method from Molybdenite Roasting Dust in Alkali Leaching Solution SungHo Joo1,2, YoungUk Kim1, JinGu Kang 2, HoSung Yoon , DongSu Kim3 and Shun Myung Shin1,2,+ 1Department of Resource Recycling, University of Science Technology (UST), Daejon 305350, Korea 2Metal Recovery Group, Mineral Resources …

Read More ›

Separation of rhenium from electricoxidation leaching ...

Jul 31, 2013· D301 resin is an effective separation material of rhenium from electricoxidation leachate of molybdenite. The adsorption kinetics results also show that the adsorption of rhenium is easier than that of molybdenum, and the adsorption process of D301 for rhenium and molybdenum may be controlled by liquid film diffusion.

Read More ›

Investigations on the extraction of molybdenum and rhenium ...

Read "Investigations on the extraction of molybdenum and rhenium values from low grade molybdenite concentrate, Hydrometallurgy" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

Read More ›

Processing of rheniumbearing molybdenite concentrates ...

Leaching of roasted product was carried out with K2CO3 solution at the temperature of 85–90 оC and the leaching time of 1 h. The resulting solution was neutralized with nitric acid and was treated with calcium nitrate at the temperature of 95 оC for the precipitation of calcium molybdate. ... Molybdenum, rhenium, sulphide concentrate ...

Read More ›

Investigation on selective rhenium leaching from ...

Keywords: leaching, flue dust, molybdenum, rhenium, selectivity. 1. Introduction Rhenium is a less common metal, characterized calculated the activation energy for the leaching by its high melting point and its important role in of molybdenite to be kJ/mol, and that for petrochemical, aerospace and metallurgical the rhenium to be kJ ...

Read More ›

Silvercatalyzed bioleaching of copper, molybdenum and ...

Different pulp densities (3–9%) and initial pH values (–) were also tested in the bioleaching experiments but their effects were masked by enhancement of copper leaching due to silver catalysis. Molybdenum and rhenium responded comparably to changes in bioleaching conditions, suggesting that Re was located in the molybdenite matrix.

Read More ›

Method of separating rhenium and molybdenum

Thus together with the rhenium reextract goes molybdenum, which leads to the need for additional processing reextractors with the aim of obtaining highquality commercial products. Known use as extractant rhenium salts of Quaternary ammonium bases ( Patent No. 3244475, CL 423508, 1966), which allows you to divide the rhenium and molybdenum.

Read More ›

Traditional roasting process of molybdenite

Jul 23, 2014· ⑵ in the roasting process, so that about 3% of molybdenum in the form of dust from the flue gas losses in subsequent ammonia leaching process there are more than 5% of the molybdenum in the form of slag lost, the entire production process molybdenum recovery of only 85 % ~ 90%, Hui rare element rhenium molybdenum concentrates in almost all ...

Read More ›

What is Status of Molybdenum Recovery and Utilization ...

Aug 16, 2017· With the continuous development of molybdenum industry, molybdenum raw material consumption is more and more big, the recoverable resources are becoming less and less, in order to protect the environment and improve the utilization rate of molybdenum resources, since the beginning of the last century, the developed countries began to focus on renewable resources, especially […]

Read More ›

Solvent extraction of rhenium from molybdenum in alkaline ...

The technology of selective extraction of rhenium from alkaline solutions containing rhenium and molybdenum by solvent extraction using a mixture of tributyl phosphate and triotylamine as extractant has been investigated, complete separation of rhenium from alkaline solutions containing rhenium and molybdenum was possible after repeated extraction and repeated stripping.

Read More ›

Acidic Leaching with Chlorate as Oxidizing Agent to ...

The technology of molybdenum extraction from molybdenite concentrate by using potassium chlorate (KClO3) or sodium chlorate (NaClO3) has been investigated. The results show that leaching time, leaching temperature, agitation speed, oxidizer type, potassium or sodium chlorate, and hydrochloric acid concentration have significant effect on the molybdenum extraction efficiency.

Read More ›

Separation of rhenium and molybdenum from molybdenite ...

EBSCOhost serves thousands of libraries with premium essays, articles and other content including Separation of rhenium and molybdenum from molybdenite leach liquor by the solvent extraction method. Get access to over 12 million other articles!

Read More ›

Bioleaching of Sarcheshmeh molybdenite concentrate for ...

(a) Rhenium (Re), (b) molybdenum (Mo), and (c) iron (Fe) 429 the 1 : 1 line than the other data, indicating that a dissolution in bioleaching of molybdenite concentrate with different 430 strong selective extraction of rhenium occurred in culture media.

Read More ›

Rhenium Extraction by Leaching in Ammonium Iodide Iodine

The leaching behavior of gold and platinum in iodide/iodine solutions has been studied. However, the dissolution behavior and leaching mechanism of rhenium in aqueous solutions has not been investigated in detail. The current investigation is to understand the leaching mechanism of rhenium in ammonium iodide and iodine solutions.

Read More ›

Separation of rhenium and molybdenum from molybdenite ...

The current efficiency for molybdenum dissolution was 73 % after 10 hours electrolysis, and the leach solution was found to contain mol/l of molybdenum and 4×105 mol/l rhenium.

Read More ›

Hydrometallurgy, Pyrometallurgy, and Extraction and ...

Request Expert. Expert B. Expert has indepth experience on molybdenum recovery and rhenium recovery (includes six patents and papers): pressure leaching of molybdenite (molybdenum disulfide) concentrates, ammonium dimolybdate (ADM) production, preparing MoS2 lubricant, deoiling molybdenite, and upgrading molybdenite by leaching.

Read More ›

ElectroOxidation of Molybdenum Concentrate Using Bipolar ...

molybdenum dissolution was 73 % after 10 hours electrolysis, and the leach solution was found to contain mol / l of molybdenum and 4 510 mol / l rhenium. This result shows the dissolution speed is more than 8 times faster than that obtained using a single cell at applied current of 1 A. Prior to rhenium separation from the leach solution,

Read More ›

Molybdenum Processing

Rhenium recovery. Some of the byproduct molybdenite concentrates from copper mines contain small quantities (<%) of rhenium. Molybdenum roasters equipped to recover rhenium are one of the principal commercial sources for this rare metal.

Read More ›

Sustainable Extraction and Separation of Rhenium and ...

rhenium (VII) oxide, Re 2 O 7, from the sulfurous gas phase generated during hearth roasting (in molybdenum processing) and smelting (in copper processing).7−9 An alternative process relies on the pressure leaching of molybdenite concentrates. Rhenium is solubilized during the pressure leaching …

Read More ›

Sierrita mine Wikipedia

The mine produces copper and molybdenum concentrate as well as SX/EW copper cathode from a ROM oxideleaching system. Sierrita was operated by Phelps Dodge until 2007 when it was acquired by McMoRan. The mine has one of the largest copper reserves in the United States and in …

Read More ›

Separation of rhenium and molybdenum from molybdenite ...

Molybdenum resources around the world are mainly associated with porphyry copper ores. Molybdenite (MoS 2) is the main Mo mineral that has rhenium in its crystal lattice. This paper investigates the recovery of rhenium and molybdenum from a molybdenite concentrate using a hydrometallurgical treatment method.

Read More ›

Rhenium Wikipedia

Rhenium has the thirdhighest melting point and highest boiling point of any stable element at 5903 K. Rhenium resembles manganese and technetium chemically and is mainly obtained as a byproduct of the extraction and refinement of molybdenum and copper ores. Rhenium shows in its compounds a wide variety of oxidation states ranging from −1 to +7.

Read More ›

molybdenum rhenium leaching

molybdenum rhenium leaching Home molybdenum rhenium leaching. Sierrita mine Wikipedia. The Sierrita Mine is a large copper mine loed in the Sierrita Mountains of Arizona, in the southwestern part of the United mine is loed in southern Pima County, southwest of Tucson and west of Green ValleySahuarita.. Originally developed as an ...

Read More ›

Processing Molybdenite Concentrate by an Acid BakeLeach ...

A process has been developed and piloted to reject copper, lead, iron, phosphorus, bismuth, antimony, elemental sulfur, and insol from molybdenite concentrate without decomposing the contained molybdenite and rhenium. The impure concentrate is first heated with concentrated sulfuric acid at 260 to 290 °C for 1 hour. This bake not only oxidizes the contaminating sulfides, but also activates ...

Read More ›

rhenium copper recovering

Rhenium is obtained from molybdenite in porphyry copper mines and recovered as a byproduct of molybdenum processing. It is mined in the USA, Chile, Canada and Russia. Return to Periodic Table . Recovery of rhenium from copper leach solutions using ion . Most of rhenium deposits in molybdenum‑copper ores with concentrations of up to % as ReS2.

Read More ›

Climax Molybdenum A McMoRan Company

Climax Molybdenum Co., a subsidiary of McMoRan, is the world's leading molybdenum producer and supplier. Founded in 1916, our global operations include both primary and byproduct molybdenum mines. Integrated global operations and local customer care provide our worldwide partners with the most reliable supply and highest quality molybdenum and rhenium products.

Read More ›

MOLYBDENUM, FERROMOLYBDENUM, AND AMMONIUM …

condensation or by leaching. In sublimation, the technical grade oxide is heated to approximately 1,100°C in a muffle type furnace. The oxide is vaporized and carried in a stream of forced air through cooling ducts and 4 Ibid., p. 850. 5 "Molybdenum and Molybdenum Alloys," from KirkOthmer Encyclopedia of Chemical Technology, 3rd ed.,

Read More ›

Molybdenum Rhenium Extraction

Molybdenum ore beneficiation method a large amount of smoke, pollute the environment, the recovery rate of molybdenum is low, and the rare elements, rhenium almost all run away with the flue gas, it is not suitable for processing lowgrade ore and complex oreion exchange and extraction method to extract pure molybdenum trioxide from.

Read More ›