Recovery of Molybdenum & Rhenium From Molybdenite
The Bureau of Mines electrooxidation process will accept a variety of molybdenum concentrates that contain significant amounts of copper as chalcopyrite, and the process has the following potential advantages over present-day practice: Improves molybdenum-rhenium recovery; eliminates generation of sulfur oxide gases; eliminates the need to dry
Rhenium Wikipedia
Rhenium in the form of rhenium-platinum alloy is used as catalyst for catalytic reforming, which is a chemical process to convert petroleum refinery naphthas with low octane ratings into high-octane liquid products. Worldwide, 30% of catalysts used for this process contain rhenium.
DE50204382D1 A process for the recovery of rhenium
rhenium recovery process Prior art date 2001-11-09 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.) Active Application number DE2002504382 Other languages German (de) Inventor Dr Meese-Marktscheffel
DE10155237A1 A process for the recovery of rhenium
There is described a process for elution of adsorbed on strongly basic ion exchange resins rhenium by means of highly concentrated aqueous hydrochloric acid solution, wherein the ion exchange resin is treated with containing in aqueous, an oxidizing agent solution.
Rhenium: a hidden asset
2013-09-01· Recovering and refining rhenium and PGMs With regard to the recovery and refining process for spent PGM/Re bearing catalysts, the following is a brief description of the procedures involved. Typically, a precious metals refiner will assign a tracking number to incoming spent catalyst materials which are tested for carbon, sulphur, moisture, or
Process for rhenium recovery Nihon Kogyo Kabushiki Kaisha
1986-02-25· What is claimed is: 1. A process for rhenium recovery by the use of an anion exchange resin, characterized in that rhenium is eluted from the rhenium-adsorbed anion exchange resin with a hydrochloric acid solution containing a metal chloride selected from the group consisting of cadmium chloride and zinc chloride.
Recovery and separation of molybdenum and rhenium from a
Recovery and separation of molybdenum and rhenium from a process solution was accomplished by a technique developed by the Federal Bureau of Mines involving a combined solvent extraction and activated carbon adsorption procedure.
Recover Rhenium by Solvent Extraction
Recovery of rhenium by solvent extraction can be considered to be a two step process involving concentration of a low grade highly contaminated dilute feed to a relatively pure concentrated feed, and final purification and refining of medium grade concentrated feed to the desired level for crystallization.
Recovery of rhenium from copper leach solutions using ion
To verify the process of extracting rhenium in industrial application, three ion exchange columns packing with 105 L resins were operated to recover rhenium by direct ion exchange method. In the adsorption process, the recovery rate of rhenium reached 97.13% after approximately 960 BVs of leach solution flow. The loaded resins were eluated
Recovery of rhenium from aqueous mixed metal solutions by
Rhenium was also recovered efficiently and selectively from rhenium–tungsten solutions (initial concentration 10.4 mM for each metal): when the pH ranged from 7.0 to 12.0 and the irradiation time was 6 h, the rhenium recovery was 90–95% and the rhenium recovery ratio was 7.3–45 times that of tungsten. In contrast, when the coexisting
recovery of platinum and rhenium Cheresources
processes used for the recovery of nobel metals from spent catalysts would be worthy and considerable. There are some methods for recovery of platinum,rhenium and other nobel metals from catalysts [1-10] .One effective method for recovery of Pt and Re from spent catalysts containing these metals or from solutions containing the
Process for recovery of molybdenum and rhenium from ores
1977-02-01· Process for recovery of molybdenum and rhenium values from sulfide ores containing said values, and impurities including contained silica, the process comprising fusing said ores with a molar excess of alkali metal carbonate of at least 15% over that required for the theoretical conversion of the molybdenum, rhenium and sulfur values to water
Recovery of rhenium from molybdenite calcine by a resin-in
This paper introduces a resin-in-pulp (RIP) hydrometallurgical process, which is widely used in gold leaching and recovery industry, to recover rhenium effectively and economically from
US Patent for Rhenium recovery Patent (Patent # 8,956,582
2010-03-11· The present disclosure provides a hydrometallurgical rhenium and rhenium compound recovery process which involves converting the rhenium values in mixtures with other metals and metal compounds to their highest oxidative valence state, +7, in which it is soluble in water.
Solvent extraction process for the recovery of molybdenum
OSTI.GOV Patent: Solvent extraction process for the recovery of molybdenum and rhenium from molybdenite
Process Recovery Rhenium gcinternational.co.za
Recovery of rhenium from molybdenite calcine by a resinin . The new RIP rhenium recovery process obtained is of the advantages of higher selectivity, short process, less costs and environmental compact, which is beneficial to the molybdenum and rhenium industries to comprehensive utilize their less common metals resource.
Selective Rhenium Recovery from Spent Reforming Catalysts
The conventional rhenium recovery process from spent reforming catalysts. Rhenium recovery from the leaching solution is accomplished by ion exchange.6 The spent-catalyst hydrometallurgical processing comprises several unit operations aimed at the recovery of the various components of the spent catalyst, alumina, platinum, and rhenium. The first task is to reduce the bulk by dissolution of
Process Recovery Rhenium tembaletu.co.za
Process Recovery Rhenium primaryteachers. CA1218239A Process for rhenium recovery Google A process for rhenium recovery by the use of an anion exchange resin comprises eluting rhenium from the rheniumadsorbed anion exchange resin with a hydrochloric.
Extractive metallurgy of rhenium: a review SpringerLink
Abstract. A variety of processing technologies exist for recovery from both primary and secondary sources of rhenium. Currently, there are no known primary rhenium deposits; thus, the method in which primary rhenium is produced is dependent on the commodity of which it is a byproduct, e.g., copper, molybdenum, uranium, etc.
Umicore Rhenium
They detected rhenium spectroscopically in platinum ores and in the minerals columbite, gadolinite and molybdenite. In 1928, Noddack and Berg were able to extract 1 gram of rhenium from 660 kilograms of molybdenite. Today, rhenium is obtained as a by-product of refining molybdenum and copper.
Umicore Rhenium
They detected rhenium spectroscopically in platinum ores and in the minerals columbite, gadolinite and molybdenite. In 1928, Noddack and Berg were able to extract 1 gram of rhenium from 660 kilograms of molybdenite. Today, rhenium is obtained as a by-product of refining molybdenum and copper.
Extractive metallurgy of rhenium: a review SpringerLink
Abstract. A variety of processing technologies exist for recovery from both primary and secondary sources of rhenium. Currently, there are no known primary rhenium deposits; thus, the method in which primary rhenium is produced is dependent on the commodity of which it is a byproduct, e.g., copper, molybdenum, uranium, etc.
Method for obtaining metallic rhenium by reduction of
Exercise patience until the completion of the recovery process. The recovery process is determined by the termination of the vapor emissions of ammonia in the bubbler in the form of a mist. Then provide additional exposure for 15 minutes Then cooled powder for 4 hours. After complete cooling, the rhenium powder is weighed and determine weight loss.
Recovery and separation of molybdenum and rhenium from a
Recovery and separation of Mo and Re from a process solution were accomplished by a technique involving a combined solvent extraction-activated carbon adsorption procedure. The processing sequence required treatment of the solution with SO/sub 2/ to reduce chlorate ion and adjust the pH prior to
Recovery and Separation of Molybdenum and Rhenium from a
Recovery and separation of molybdenum and rhenium from a process solution was accomplished by a technique developed by the Federal Bureau of Mines involving a combined solvent extraction and activated carbon adsorption procedure. The processing sequence required treatment of the solution with SO2 to reduce the chlorate ion and adjust the pH prior to solvent extraction of molybdenum and rhenium
US Patent for Extraction process for recovery of rhenium
A process is disclosed wherein essentially all of the rhenium can be removed from an aqueous solution of molybdenum without the extraction of molybdenum using a particular solvent extraction solution. The extraction solution consists essentially of quaternary ammonium compound and at least about 50 percent by volume of a highly aromatic solvent which dissolves a quaternary ammonium-rhenium
Rhenium: A Hidden Asset Sabin Metal Corporation
2013-06-01· Recovering and Refining Rhenium and PGMs. With regard to the recovery and refining process for spent PGM/Re bearing catalysts, the following is a brief description of the procedures involved. Typically, a precious metals refiner will assign a tracking number to incoming spent catalyst materials which are tested for carbon, sulfur, moisture, or
Extraction process for recovery of rhenium Patents
Extraction process for recovery of rhenium Abstract. A process is disclosed wherein essentially all of the rhenium can be removed from an aqueous solution of molybdenum without the extraction of molybdenum using a particular solvent extraction solution. The extraction solution consists essentially of quaternary ammonium compound and at least
Leaching kinetics, separation, and recovery of rhenium and
Precipitation of other metals away from the rhenium rich solution has also been explored to prepare the solution for a downstream rhenium recovery process. It
Recovery of rhenium from molybdenite calcine by DeepDyve
2006-08-01· Recovery of rhenium from molybdenite calcine by a resin-in-pulp process Recovery of rhenium from molybdenite calcine by a resin-in-pulp process Lan, X.; Liang, S.; Song, Y. 2006-08-01 00:00:00 This paper introduces a resin-in-pulp (RIP) hydrometallurgical process, which is widely used in gold leaching and recovery industry, to recover rhenium