recovery rhenium process

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 ...


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 …


Global Recovery Rhenium Market Shares and Statistics ...

Recovery Rhenium Manufacturing Process. 10.1 Product Overview. 10.2 Detailed Process Flow. 10.3 Raw Material Requirement. 10.4 Mass Balance and Feedstock Conversion Rate.


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. Author: D. D. Fischer.


Precious metal catalyst recovery from chemical processes

Recovering platinum/rhenium from spent hydrocarbon processing catalysts. Now, practical, cost-effective recovery of platinum/ rhenium reforming catalysts, regardless of solubility– with maximum returns. Platinum / rhenium catalysts are widely used in the processing of hydrocarbon products.


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.


Rhenium – Titan International, Inc.

Rhenium Pellets. Titan's rhenium pellets are ideal for alloy melting. Standard packaging includes argon cover gas for safe storage in small increments. Whether your application is land based turbines or high performance jet engines, buying from Titan ensures the highest …


Molybdenum Processing - IMOA

Rhenium recovery. Some of the by-product 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.


Cash flow: Rhenium Flue Gas Recovery

Rhenium is commonly extracted from the earth as a by-product of copper mining. It is isolated through a process known as flue gas recovery, in which rhemium is converted to dust through a heating process. Instructions. 1. Place molybdenite into the molybdenum roaster with rhemium recovery capabilities. Heat the molybdenite.


Rhenium: Properties, Production, and Applications - Matmatch

Worldwide mine production of rhenium was estimated to be 50 to 60 tons annually, 50% of which was produced from the largest porphyry copper mines in Chile [4]. Rhenium recovery from flue gases in molybdenite roasting. From porphyry copper ores, 0.3 – 1.6% copper and 0.01 – 0.05% molybdenum are ground and concentrated by flotation.


Prospects for selective-and-advanced recovery of rhenium ...

A selective-and-advanced scheme of rhenium recovery from pregnant uranium-bearing sulfate (sulfuric acid) solutions of the Dobrovolnoye deposit ISL (Russia) using mobile installations was proposed. The process has the following features: zoning of production blocks when constructing injection and extraction (pumping) wells; piping of selective ...


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

To optimise the leaching process the concentration of aqua-regia solution, leaching time, solid-to-liquid ratio, stirring speed, and sonication time have been investigated as experimental factors that can influence the recovery of rhenium from superalloy CMSX-4.


Recovering platinum/rhenium from spent hydrocarbon ...

Platinum / rhenium catalysts are widely used in the processing of hydrocarbon products. 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 ...


INTERNATIONAL SYMPOSIUM ON RHENIUM AND RHENIUM …

A process for selectively recovering rhenium from exhausted Pt-Re catalysts includes next steps: roasting, acid- or alkali-assisted leaching, ion-exchange recovery or rhenium from the solution and preparing high-purity ammonium perrhenate (99.99%).


Rhenium-Production,Technology,Properties, Applications ...

Process for Manufacturing Rhenium Rocket Nozzles or Articles Recovery of Radiogenic Osmium-1 87 ~ from Sulfide Copper Ores Novel radioactive technetium and Rhenium chelate complexes for the diagnosis and therapy of cancer


recovery of platinum and rhenium - Cheresources.com

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


Investigation on the recovery of rhenium in the high ...

The recovery of rhenium from acidic wash solution originating from a copper smelting process using sodium thiosulfate were investigated. Effects of reaction time, reaction temperature, flocculant addition and redissolubility of precipitate on the precipitation of rhenium have been studied.


Rhenium: A Hidden Asset - Sabin Metal Corporation

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 ...


Investigation on the recovery of rhenium in the high ...

Abstract The recovery of rhenium from acidic wash solution originating from a copper smelting process using sodium thiosulfate were investigated. Effects of reaction time, reaction temperature, flocculant addition and redissolubility of precipitate on the precipitation of rhenium have been studied. The temperature, Oxidation-Reduction Potential of the solution, reaction time in favor of the ...


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 into ferromolybdenum (FeMo).


Efficient, Environmentally-Compatible Recovery ...

Opportunities exist for enhancing rhenium yield through technological improvements in discrete steps in the recovery process. Due to rhenium"s excellent high temperature properties (high creep resistance, high melting point, etc.) it is widely used as an alloying agent for high temperature applications including: Pt-Re petroleum reforming ...


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 ...


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

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 …


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

A basic technological scheme of the Re recovery process is proposed. It includes anodic dissolution of W-Re alloys, precipitation of calcium tungstate from the electrolyte and electrodialysis of rhenium in the form of perrhenic acid. Export citation and abstract BibTeX RIS. Content from this work may be used under the terms of the Creative ...


Rhenium Production - ISTC

Current flowcharts for rhenium recovery imply waste solutions containing 1 to 5 mg/L rhenium. 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 ...


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.


US8038764B2 - Rhenium recovery from superalloys and ...

A method of recovering rhenium from rhenium-containing superalloy scrap is provided. The superalloy is usually a nickel-based superalloy. The method includes the steps of forming an oxidation feedstock of flaky morphology of the superalloy scrap, and oxidizing the oxidation feedstock to convert rhenium into a volatile rhenium oxide. The flaky morphology of the oxidation feedstock is achieved ...


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 …


Recovery of rhenium from molybdenum and copper ...

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] .


Recovery of Molybdenum & Rhenium From Molybdenite …

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 ...


Recovery of Molybdenum & Rhenium From Molybdenite …

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. The pregnant solution was clarified in a 1- by 1-foot ...


Application of thermal analysis to the rhenium recovery ...

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 high production cost. Due to the environmental disadvantages presented by the oxidizing roasting, in this paper the …