process recovery rhenium

process recovery rhenium

US4521381A - Recovery of rhenium - Google Patents

In a process is disclosed for recovering rhenium from tungsten and rhenium bearing material by oxidizing and fusing the starting material, solubilizing the tungsten and rhenium values, passing the resulting solution through a strongly basic anion exchange resin to retain the rhenium, removing the rhenium from the resin with an organic stripping liquid of tributylphosphate and hydrochloric acid ...

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Recovery of rhenium from molybdenum and copper ...

May 01, 2014  The recovery of rhenium from the Mo and Cu ores has been estimated at 40–60% and significant opportunity exists to improve the efficiency of the process . A new technology known as Looping Sulfide Oxidation (LSO) has been proposed to process MoS 2 concentrates and Cu sulfide concentrates to MoO 2 and anode Cu, respectively [14] , [15] .

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Recovery of rhenium from molybdenum and copper ...

A detailed thermodynamic study of the reaction conditions used in LSO process indicates that rhenium recovery is possible at higher rates than currently realized in the industry. Conditions at which Re 2 O 7 is reduced to rhenium metal by S 2 have been identified and key process conditions are outlined to maximize performance of the LSO scheme ...

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Recovery of Molybdenum Rhenium From Molybdenite

May 22, 2017  Molybdenum and Rhenium Recovery. Figure 8 details the process sequence employed for recovering molybdenum and rhenium from the electrooxidation reaction pulp. Liquid-solids separation was accomplished in two 3-foot rake thickeners in series with a 1- by 3-foot washing rotary drum filter.

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Recover Rhenium by Solvent Extraction

Nov 26, 2018  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. Alamine 336, a long chain tertiary amine.

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Recovery of rhenium from molybdenite calcine by a resin-in ...

Aug 01, 2006  1.. IntroductionThe 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.

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Leaching kinetics, separation, and recovery of rhenium and ...

Apr 01, 2019  The process flow chart in Fig. 10 summarises the separation and recovery of the rhenium value from CMSX-4 superalloy scraps, and Table 2 lists the solution concentration (mg L −1) of each component metal at all stages of the separation process. The residue filtered off the initial leach solution mainly contains tungsten and hafnium.

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Recovering platinum/rhenium from spent hydrocarbon ...

As rhenium values have increased, recovery techniques from spent catalysts have not kept pace. However, most users look to their refiners for increased recovery yields. Finally, there is a practical, cost-effective breakthrough that addresses this issue: after years of research, Sabin scientists have developed a unique method of recovering ...

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(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 ...

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(PDF) Separation and recovery of ruthenium: A review

of the recovery process reported by Naito et al. was similar. to the method developed for the recovery of noble metals. from HLLW by Jensen [49] at Pacific North West Lab, but.

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Recovery of rhenium from molybdenum and copper ...

A detailed thermodynamic study of the reaction conditions used in LSO process indicates that rhenium recovery is possible at higher rates than currently realized in the industry. Conditions at which Re 2 O 7 is reduced to rhenium metal by S 2 have been identified and key process conditions are outlined to maximize performance of the LSO scheme ...

More

Recover Rhenium by Solvent Extraction

Nov 26, 2018  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. Alamine 336, a long chain tertiary amine.

More

(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 ...

More

Leaching kinetics, separation, and recovery of rhenium and ...

Apr 01, 2019  The process flow chart in Fig. 10 summarises the separation and recovery of the rhenium value from CMSX-4 superalloy scraps, and Table 2 lists the solution concentration (mg L −1) of each component metal at all stages of the separation process. The residue filtered off the initial leach solution mainly contains tungsten and hafnium.

More

Recovering platinum/rhenium from spent hydrocarbon ...

As rhenium values have increased, recovery techniques from spent catalysts have not kept pace. However, most users look to their refiners for increased recovery yields. Finally, there is a practical, cost-effective breakthrough that addresses this issue: after years of research, Sabin scientists have developed a unique method of recovering ...

More

Recovery of rhenium from copper leach solution by ion ...

Aug 01, 2012  Rhenium exchange on A170 a macroporous type resin was examined using concentrated solutions of H 2 SO 4, HCl, and HNO 3. There is current interest in recovery of rhenium from solutions produced during the leaching of low-grade copper resources. Large scale heap and stockpile leaching takes place at many copper operations throughout the world.

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(PDF) Separation and recovery of ruthenium: A review

of the recovery process reported by Naito et al. was similar. to the method developed for the recovery of noble metals. from HLLW by Jensen [49] at Pacific North West Lab, but.

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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

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Recovery of Platinum and Rhenium from Waste-spent ...

Mar 31, 2016  The recovery of platinum achieves 96.0%, and the purity of sponge platinum climbs to 99.95%, and rhenium recovery rate reaches 85.0% with

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Rhenium: A Hidden Asset - Sabin Metal Corporation

Jun 01, 2013  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. In fact, most precious metals catalyst refiners recover rhenium by dissolving their carriers (typically aluminum oxide) using strong caustic or acidic chemicals in a process ...

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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.

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US8956582B2 - Rhenium recovery - Google Patents

There is provided a hydrometallurgical process of recovering rhenium values from mixtures thereof with other metal values in which the rhenium values constitute a minority amount, for example super-alloys, which comprises subjecting the mixture to strongly oxidizing acid conditions, preferably an aqueous mixture of hydrochloric acid and nitric acid, so as to form perrhenate species of at least ...

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Application of thermal analysis to the rhenium recovery ...

Abstract. Rhenium production from copper and molybdenum sulphides involves the use of a pyrometallurgical process. In traditional pyrometallurgy processes, gases emissions produce unacceptable air pollution and damage the extractive metallurgy equipment, leading to

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US Patent for Rhenium recovery Patent (Patent # 8,956,582 ...

Mar 11, 2010  There is provided a hydrometallurgical process of recovering rhenium values from mixtures thereof with other metal values in which the rhenium values constitute a minority amount, for example super-alloys, which comprises subjecting the mixture to strongly oxidizing acid conditions, preferably an aqueous mixture of hydrochloric acid and nitric acid, so as to form perrhenate species of

More

Recover Rhenium by Solvent Extraction

Nov 26, 2018  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

More

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.

More

Recovering platinum/rhenium from spent hydrocarbon ...

As rhenium values have increased, recovery techniques from spent catalysts have not kept pace. However, most users look to their refiners for increased recovery yields. Finally, there is a practical, cost-effective breakthrough that addresses this issue: after years of research, Sabin scientists have developed a unique method of recovering ...

More

Recovery of rhenium from copper leach solution by ion ...

Aug 01, 2012  Rhenium exchange on A170 a macroporous type resin was examined using concentrated solutions of H 2 SO 4, HCl, and HNO 3. There is current interest in recovery of rhenium from solutions produced during the leaching of low-grade copper resources. Large scale heap and stockpile leaching takes place at many copper operations throughout the world.

More

The improvement of rhenium recovery technology from W-Re ...

Nov 01, 2018  It is considered, that the fundamentals of an improved technology of rhenium recovery in the form of perrhenic acid from binary W-Re alloys. It is shown the desirability of avoiding the precipitation of metal in the form of potassium perrhenate. A basic technological scheme of the Re recovery process is

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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 ...

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Selective recovery of Rhenium from industrial leach ...

Recycling rhenium from spent alloys and catalysts is a multi-step process combining pyrometallurgical and hydrometallurgical techniques, where its separation and the subsequent steps are similar ...

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Application of thermal analysis to the rhenium recovery ...

Abstract. Rhenium production from copper and molybdenum sulphides involves the use of a pyrometallurgical process. In traditional pyrometallurgy processes, gases emissions produce unacceptable air pollution and damage the extractive metallurgy equipment, leading to

More

Recovery of Platinum and Rhenium from Waste-spent ...

Mar 31, 2016  The recovery of platinum achieves 96.0%, and the purity of sponge platinum climbs to 99.95%, and rhenium recovery rate reaches 85.0% with

More

US Patent for Rhenium recovery Patent (Patent # 8,956,582 ...

Mar 11, 2010  There is provided a hydrometallurgical process of recovering rhenium values from mixtures thereof with other metal values in which the rhenium values constitute a minority amount, for example super-alloys, which comprises subjecting the mixture to strongly oxidizing acid conditions, preferably an aqueous mixture of hydrochloric acid and nitric acid, so as to form perrhenate species of

More

Extractive metallurgy of rhenium: a review SpringerLink

Feb 01, 2013  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. In addition, focus on the recovery of rhenium from secondary sources,

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Molybdenum Roasting - Mineral Processing Metallurgy

Mar 19, 2017  Efficient rhenium recovery is also possible. Both LSO reactors operate in an exothermic manner allowing for stable rapid reaction kinetics. SOx strength will exceed levels achievable by any other process. This will allow for smaller acid plant equipment or greatly increased efficiency of an existing acid plant.

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Rhenium(VII) Recovery Via Electro-oxidation Process - I ...

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 ...

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

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 metal-to-metal basis, the recovery value of 93% rhenium as NH 4 ReO 4 (9.5 g L –1 Re in the solution) demonstrated the potential of the present process.

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