molybdenum rhenium leaching

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US3751555A - Solvent extraction process for the recovery ...

US3751555A US00236838A US3751555DA US3751555A US 3751555 A US3751555 A US 3751555A US 00236838 A US00236838 A US 00236838A US 3751555D A US3751555D A US 3751555DA US 3751555 A US3751555 A US 3751555A Authority US United States Prior art keywords rhenium molybdenum acid recovery extractant Prior art date Legal …

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Opening of molybdenite ores and the electrowinning of rhenium

At this point, the leach liquor is removed from the leaching chamber and the ore is releached to solubilize the molybdenum. When it is desired only to solubilize copper and molybdenum in order to effectuate their removal from the rhenium values and thereby concentrate the rhenium, the releaching step is not necessary.

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Acidic Leaching with Chlorate as Oxidizing Agent to ...

Jun 23, 2015· The technology of molybdenum extraction from molybdenite concentrate by using potassium chlorate (KClO 3) or sodium chlorate (NaClO 3) 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 …

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Freeport-McMoRan Sierrita Inc.

The Sierrita property consists of two openpits: Sierrita- -Esperanza pit, and a molybdenum satellite pit; a 115,000-ton-per-day concentrator, two molybdenum roasting plants, a rhenium plant, an oxide and low-grade sulfide stockpile leaching operation, and a copper sulfate plant.

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Separation of rhenium and molybdenum from molybdenite ...

Feb 01, 2013· Molybdenum resources around the world are mainly associated with porphyry copper ores. Molybdenite (MoS2) 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. The molybdenite concentrate is …

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Solvent extraction | Solvay

CYANEX® 600 is used for the purification and concentration of molybdenum from acidic solutions. Relative to tertiary amine extractants, CYANEX 600 has several advantages, such as improved selectivity for Mo over other metals commonly present in leach solutions including arsenic, iron, aluminum, copper, chromium, and rhenium, higher Mo loading ...

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Separation of rhenium and molybdenum from molybdenite ...

Apr 09, 2010· After removing rhenium, molybdenum was extracted with LIX984N. The selectivity of molybdenum extraction over other metals in solution was significant. Nearly 94% of molybdenum can be extracted from the solution …

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JME

Keywords: leaching, flue dust, molybdenum, rhenium, selectivity. 1. Introduction Rhenium is a less common metal, characterized by its high melting point and its important role in petrochemical, aerospace and metallurgical industries. It does not form its own minerals but

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How Is Molybdenum Mined and Processed? | Refractory Metals ...

Rhenium Recovery. Some molybdenite concentrates, a by-product from copper ore, contain small amounts of rhenium (< 0.10%). The recovery of rhenium by molybdenum roaster is one of the main industrial sources of this rare metal. Molybdenum Iron Smelting. About 30-40% of the industrial molybdenum oxide is processed

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Molybdenum-rhenium alloy, Mo52.5Re47.5

Molybdenum-rhenium alloy, Mo52.5Re47.5, foil, 100 x 100mm, 0.125mm thickness, annealed

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How is Molybdenum Extracted - samaterials.com

Electrooxidation leaching method: it is improved by sodium hypochlorite method, the method is adding molybdenite mineral slurry to the electrolytic tank, has been equipped with Sodium Chloride Solution in the electro-oxidation process, Cl2 and anode products react with water to produce hypochlorite, molybdenum sulfide hypochlorite oxidation in ...

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Hydrometallurgy, Pyrometallurgy, and Extraction and ...

Request Expert. Expert B. Expert has in-depth 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.

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Molymet

Innovation and quality for the most challenging industries. Molybdenum and rhenium products elaborated by Molymet are key inputs for several industries all over the world ranging from the mega construction to the aeronautic and the healthcare industries. +. Sustainability. Committed to environmental care. In Molymet we are sustainable in nature.

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RHENIUM AND MOLYBDENUM SEPARATION FROM SULFIDE …

This leach solution contains the remainder of the molybdenum and approximately 95 percent of the rhenium. This solution is then in the form to separate sodium molybdate from the sodium perrhenate by either ion exchange or solvent extraction or some other technique, with the rhenium going to rhenium recovery and the molybdenum recycled to the ...

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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 step and

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1 J.W. Blossom, Molybdenum, from Minerals Yearbook …

Molybdenum metal is a refractory metal used as an alloying agent in steels, cast irons, ... and may contain rhenium or selenium. The SO 2 ... condensation or by leaching. In sublimation, the technical grade oxide is heated to approximately 1,100°C in a muffle

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Novel Aqueous Processing of the Reverted Turbine-Blade ...

Jul 02, 2016· A preliminary study on the hydrometallurgical recovery of rhenium from an engine-reverted superalloy, CMSX-4, was performed. The novelty of this work dealt with (i) the applicability of electro-generated Cl2 in rhenium leaching and (ii) the maneuvering of the organic extractants based on the metal speciation in leach liquor. In a two-step HCl leaching, more …

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-Study on Recovery of Rhenium …

Oct 18, 2018· The results show that rhenium leaching rate is 94% above and molybdenum leaching rate is 10% below under the conditions including roasting temperature of 200 ℃, roasting time of 4 h, and leaching at room temperature for 2 hours with L/S=2︰1. Selective extraction of rhenium is preliminary realized.

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US3988418A - Hydrometallurgical production of technical ...

leaching molybdic oxide gpl molybdenum rhenium Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US05/605,443 Inventor Derek G. E. Kerfoot ...

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ISEC 2017 - The 21st International Solvent Extraction ...

Leaching tests in sulphate medium reveal that the acidic leaching solution contains both rhenium and molybdenum. Our results and also other investigations show that rhenium can be efficiently recovered with tertiary amines [1]. However molybdenum is co-extracted by these amines. The modification of the amine extraction system with tributyl ...

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Metals and Hydrometallurgy|Ion Exchange Resin and ...

Recovery of rhenium and molybdenum from sulfuric acid solution which produces molybdenum and copper: PM604: Separation of rhenium from molybdenum: PM401: Convert sodium tungstate to ammonium tungstate: PM403: Molybdenum extraction resin: PM606: Removal of tungsten impurities from molybdate.

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(PDF) Leaching behavior of rhenium and molybdenum from ...

A study has been conducted for the separate recovery of molybdenum and rhenium from alkali leaching solution of molybdenite roasting dust by a selective precipitation method.

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AIR QUALITY PERMIT - Pima County

rhenium recovery, molybdenum disulfide and molybdenum trioxide packaging, and leaching of oxide ore with solution extraction/electrowinning processes. FMSI also operates a magnetic steel recovery plant, a decant solids handling facility, electrical generators, process heaters, boilers, screening equipment, road rock crushing equipment ...

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Rhenium minerals - CONCENTRATION OF MINERALS

Rhenium is mainly obtained as a by-product of the extraction and refinement of molybdenum and copper ores. The main source of rhenium is molybdenum concentrates (rhenium content 0.01-0.04%; 2-20 to 200-300 g /t). Currently, the industrial source of rhenium is also the waste water of hydrometallurgical processing of poor molybdenite concentrates.

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Corrosion Alloys Guide

molybdenum, and tungsten also encourage the formation of carbides within the microstructure. These carbides (chromium‐rich M7C3 and M23C6, and molybdenum/tungsten‐rich M6C) are very beneficial under low stress (two‐body) abrasion conditions.

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Fundamental Insights into Deactivation by Leaching During ...

5 ammonium groups. However, these catalysts all demonstrated some leaching during DODH of diethyl tartrate with 3-pentanol as reductant and solvent.22 Sharkey et al. tried using a catecholate ligand with a tether as an anchoring strategy, but rhenium was found to leach.23 In an approach to replace the expensive rhenium by alternative metals in supported …

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NORTH AMERICA | Freeport-McMoRan

NORTH AMERICA. In North America, FCX operates seven open-pit copper mines — Morenci, Bagdad, Safford, Sierrita and Miami in Arizona, and Chino and Tyrone in New Mexico; and two molybdenum mines — Henderson and Climax in Colorado. Molybdenum concentrate, gold and silver are also produced by certain of FCX's North America copper mines.

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Technical Details « Metaleach Limited

MoReLeach Patent & Technical Description. MetaLeach has been granted a patent for a Method Oxidative Leaching of Molybdenum – Rhenium Sulphide Ores and/or Concentrates in Australia, with patents in other countries pending. The patent is directed to the MoReLeach technology, a sister technology to the Company's HyperLeach ® technology (patents granted …

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Recovery of Molybdenum and Rhenium Using Selective ...

Rhenium-bearing molybdenite concentrate is a typical mineral resource to recover molybdenum and rhenium, but has long been poorly utilized via oxidative roasting-leaching route.

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Development Document For Effluent Limitations Guidelines ...

----- primary molybdenum and rhenium subcategory table of contents (continued) section page molybdenum sulfide leaching 33 roaster s0£ scrubber 33 molybdic oxide leachate 34 hydrogen reduction furnace scrubber 34 depleted rhenium scrubbing solution 35 sulfur1c acid plant slowdown 35 vi selection of pollutant parameters 69 conventional and nonconventional …

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LEADING THE WORLD IN MOLY - Climax Molybdenum

Climax Molybdenum Company, a subsidiary of Freeport-McMoRan, is one of the world's leading molybdenum ... Pressure Leach SIERRITA, ARIZONA By-product Mine Roasting STOWMARKET, UNITED KINGDOM Ferromolybdenum ... Rhenium Pellets INFORMATION AND CUSTOMER SERVICE PRODUCTS LOCA TIO NS AND CONTACTS.

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Patents Assigned to Metaleach Limited - Justia Patents Search

May 28, 2015· Abstract: A method for leaching molybdenum and/or rhenium from a sulfide ore and/or concentrate containing such, the method comprising the steps of: Exposing the ore and/or concentrate to an aqueous solution of chlorine-based oxidizing species in which the sum of the concentrations of hypochlorite and hypochlorous acid is at least 10 mol % of the chlorine …

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Sierra Gorda | KGHM Corporate Website

A plant with molybdenum concentrate separation is used for ore flotation. By optimising the use of existing infrastructure and necessary investments, the target annual average daily throughput of the processing plant will be increased. The extracted oxide ore is stored for further heap leaching within the Sierra Gorda Oxide project.

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