Extractive metallurgy of rhenium: a review SpringerLink
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.
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.
Palladium & Silver recovery from MLCC''s YouTube
Jun 17, 2015 · Palladium & Silver recovery from MLCC''s we are all trying to learn so if you have more info to share about mlcc''s and palladium recovery then tell us about it. Part 3 The full process!
Rhenium: A Hidden Asset Sabin Metal Corporation
Jun 01, 2013 · Recovering and Refining Rhenium and PGMs. With regard to the recovery and refining process for spent PGM/Re bearing alysts, the following is a
NIOSHTIC2 Publiions Search 10007771 Extraction and
The flow sequence consists of dissolution of metal values by electrooxidation, liquidsolid separation by thickening, acidifiion and chlorate ion removal by sulfur dioxide treatment, solvent extraction to concentrate the molybdenum and rhenium, separation of molybdenum and rhenium by carbon adsorption, and metal recovery by crystallization.
US Patent for Methods and systems for recovering rhenium
Dec 21, 2012 · With reference to FIG. 1, rhenium recovery process 10 is illustrated according to various embodiments of the present invention. Rhenium recovery process 10 can comprise metalbearing stream 22, stationary phase 23, elution solution 25, and remainder solution 24. Metalbearing stream 22 can comprise one or more metal values.
Recovery of Radiogenic Osmium187 from Sulfide Copper Ores
The implementation of this technology of processing mother liquor derived from solidphase stripping of rhenium results in an average recovery from these solutions of 80 per cent of the osmium metal. (80 per cent is direct recovery of osmium from the mother liquor, the other 20 per cent in solid and liquid byproducts is recycled.)
Rhenium: a hidden asset
While all precious metals refiners are capable of recovering the PGMs from spent process alysts, until now refiners have been unable to recover all of their Re content. There are many reasons for this, but the main reason concerns the inability to separate the remaining Re with a practical process for its recovery and subsequent refining.
Recovery of Molybdenum & Rhenium From Molybdenite
Major losses of molybdenum and rhenium occur during flotation in the cleaner flotation sequences therefore, a process that would accept lower grade, partially cleaned molybdenite flotation concentrates that contained some copper could significantly improve overall molybdenumrhenium recovery.
Molybdenum Processing
Rhenium recovery. Some of the byproduct molybdenite concentrates from copper mines contain small quantities (<0.10%) of rhenium. Molybdenum roasters equipped to recover rhenium are one of the principal commercial sources for this rare metal.
Recovery of Palladium from Spent Activated Carbon
The high value of palladium coupled with environmental considerations means that new, efficient and cost effective methods for the quantitative recovery of palladium from such materials are required. In the present study, a process for extracting precious metals from spent alyst or
Electrochemical recovery of rhenium from W SpringerLink
The main characteristics of the electrodialysis conversion of the synthesized potassium perrhenate into perrhenic acid with a concentration of 591 g/L electrolyte are determined. A technological scheme is proposed for the recovery of rhenium from the wastes of a W–Re alloy in the form of perrhenic acid.
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.
Platinum and rhenium extraction from a spent refinery
Platinum and rhenium extraction from a spent refinery alyst using Bacillus megaterium as a cyanogenic bacterium: statistical modeling and process optimization. Motaghed M(1), Mousavi SM(2), Rastegar SO(1), Shojaosadati SA(1). Author information: (1)Biotechnology Group, Chemical Engineering Department, Tarbiat Modares University, Tehran, Iran.
Novel Aqueous Processing of the Reverted TurbineBlade
Jul 02, 2016 · The extraction of rhenium increased from 9% to 98% with an increase in extractant concentration from 0.005 to 0.08 mol L–1 in the organic phase. On a metaltometal basis, the recovery value of 93% rhenium as NH4ReO4 (9.5 g L–1 Re in the solution) demonstrated the potential of the present process.
(PDF) Extractive Metallurgy of Rhenium: A Review
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
PAPER OPEN ACCESS The improvement of rhenium recovery
technological scheme of the Re recovery process is proposed. It includes anodic dissolution of WRe alloys, precipitation of calcium tungstate from the electrolyte and electrodialysis of rhenium in the form of perrhenic acid. 1. Introduction Rhenium
SOLVENT RECYCLE PROCESS FOR RECOVERY OF RHENIUM
Dec 24, 1974 · What is claimed is 1. In a process for the recovery of rhenium from aqueous molybdate solutions wherein an organic extractant solution is used to selectively extract rhenium from said molybdate solution and is thereafter stripped with a rhenium stripping agent to remove rhenium from the organic, the improvement comprising:
Rhenium Production ISTC
Therefore, a direct transference of the existing process is impossible. The most acceptable methods for rhenium recovery from solutions with extremely low rhenium concentration can be a combination of such effective hydrometallurgical processes as sorption, extraction and electrodialysis.
Recovery of Rhenium from Superalloy Scrap SBIR.gov
Very little rhenium is actually processed and isolated each year as compared to the millions of tons of copper and millions of pounds of molybdenum that are extracted from the same copper deposits. Opportunities exist for enhancing rhenium yield through technological improvements in discrete steps in the recovery process.
Rhenium: A Hidden Asset Sabin Metal Corporation
Jun 01, 2013 · If pyrometallurgical recovery is used, the contractual return to the customer may be made on the actual content of Re in the alyst. Therefore, the most accurate methods of rhenium analysis may be used and do not need to be specified. If, however, the recovery method is digestion, only the soluble portion of the rhenium
Rhenium Wikipedia
A process for the recovery of molybdenum and rhenium from their sulfide ores which comprises subjecting the ores to microwave energy in the presence of oxygen to selectively heat the sulfides to convert them to oxides, and recovering the formed oxides. Alternatively, the sulfides in the ore are selectively heated with microwave energy in the presence of chlorine to convert them to the
Rhenium: a hidden asset
While all precious metals refiners are capable of recovering the PGMs from spent process alysts, until now refiners have been unable to recover all of their Re content. There are many reasons for this, but the main reason concerns the inability to separate the remaining Re with a practical process for its recovery and subsequent refining.
Extraction and recovery of molybdenum and rhenium from
Get this from a library! Extraction and recovery of molybdenum and rhenium from molybdenite concentrates by electrooxidation : process demonstration. [Bernard J Scheiner R E Lindstrom D L Pool United States. Bureau of Mines.] The Federal Bureau of Mines has successfully demonstrated an electrooxidationsolvent extractioncarbon adsorption process for recovering molybdenum and rhenium
NIOSHTIC2 Publiions Search 10007606 Recovery and
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.
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
Extraction and recovery of molybdenum and rhenium from
Get this from a library! Extraction and recovery of molybdenum and rhenium from molybdenite concentrates by electrooxidation : process demonstration. [Bernard J Scheiner R E Lindstrom D L Pool United States. Bureau of Mines.] The Federal Bureau of Mines has successfully demonstrated an electrooxidationsolvent extractioncarbon adsorption process for recovering molybdenum and rhenium
Recovery of rhenium from molybdenite calcine by DeepDyve
Aug 01, 2006 · Recovery of rhenium from molybdenite calcine by a resininpulp process Recovery of rhenium from molybdenite calcine by a resininpulp process Lan, X. Liang, S. Song, Y. 20060801 00:00:00 This paper introduces a resininpulp (RIP) hydrometallurgical process, which is widely used in gold leaching and recovery industry, to recover rhenium
Recovery of rhenium from molybdenite calcine by a resinin
The recovery of rhenium from molybdenite calcine has both important environmental and economic values. Rhenium is a less common metal with special properties and is widely used in the petrochemical industry, aviation, electron, medicine and metallurgy etc.
Recovery of rhenium from copper leach solutions using ion
To verify the process of extracting rhenium in industrial appliion, 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
Rhenium Element information, properties and uses
Well there are many of them. A good deal of the rhenium extracted is made into superalloys to be used for parts in jet engines. Not surprisingly for a transition metal, rhenium is also a good alyst. In fact a combination of rhenium and platinum make up the alyst of choice in the very important process
Recovery of rhenium from molybdenite calcine by a resinin
This paper introduces a resininpulp (RIP) hydrometallurgical process, which is widely used in gold leaching and recovery industry, to recover rhenium effectively and economically from
Rhenium Production ISTC
Therefore, a direct transference of the existing process is impossible. The most acceptable methods for rhenium recovery from solutions with extremely low rhenium concentration can be a combination of such effective hydrometallurgical processes as sorption, extraction and electrodialysis.
Selective Rhenium Recovery from Spent Reforming Catalysts
Reforming alysts (0.3% Pt, 0.3% Re) are used extensively in industry for the improvement of the octane number of fuels. After deactivation the alysts are treated for the recovery of Pt and Re. The aim of this study was to simplify the conventional recovery process by the appliion of a slight alkali solution (NaHCO3) for the selective dissolution of Re. The process was tested in batch
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 byproduct of refining molybdenum and copper.
Efficient, EnvironmentallyCompatible Recovery
The investigators should work with a potential industrial partner interested in recovery of rhenium. The process should evaluated and be able to show the selectivity and effectiveness of the optimized process. PHASE III: The immediate appliion is for secondary metals suppliers.
The method of extraction of rhenium
Analyses on the content of rhenium was performed by standard methods colorimetric method. Recovery of rhenium from saturated EP, AMP, EAPCR was performed with a solution containing 10% ammonia, and carried out in one stage. The feast upon the over 15, 30, 70 and 90 minutes (table.4). Part of the solution thus were selected for analysis.
MENU