recovery of tungsten and rhenium

Recovery of tungsten and rhenium - GTE Products Corporation

More, particularly, it relates to a process for recovery of tungsten and rhenium from an impure solution by removing the tungsten from the solution as a solid with hexamine. In a process for recovering the metal values from tungsten-rhenium alloy scrap, an alkaline solution containing sodium tungstate and sodium perrhenate is generally formed.

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Recovery and refining of rhenium, tungsten and

Jul 01, 1982  Recovery and refining of rhenium, tungsten and molybdenum from W-Re, Mo-Re and other alloy scraps

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Recovery of rhenium from tungsten‑rhenium wire by

Feb 01, 2020  For the recovery of tungsten‑rhenium wire and alloy, mainly oxidation volatilization, alkali melting, oxidation leaching, and electrochemical dissolution are used [, , , ]. Singh Gaur [ 26 ] once investigated the oxidation of W97Re3 at 900 °C to produce Re 2 O 7 and WO 3 , and the former can easily volatilize and absorb by ammonia to form ...

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Recovery of rhenium from tungsten‑rhenium wire by

This work focuses on the efficient recovery of high value rhenium from tungsten‑rhenium wire waste with a mass composition represented by W95Re5.

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Ion exchange resins tailored for recovery and separation ...

Different processes have been developed and used in industry for such specific tasks as selective rhenium recovery from different process solutions, separation of rhenium from molybdenum, removal of molybdenum impurities from rhenium and tungsten from molybdenum, recovery of molybdenum and tungsten from their concentrates, conversion of sodium ...

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US8038764B2 - Rhenium recovery from superalloys and ...

A method of recovery and refining of rhenium after oxidizing alloy scrap is discussed in an article “Recovery And Refining Of Rhenium, Tungsten And Molybdenum From W—Re, Mo—Re And Other Alloy Scraps” by B. Heshmatpour et. al. J., The Less-Common Metals, 86, pages 121-128 (1982), which is incorporated herein for reference.

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(PDF) The improvement of rhenium recovery technology

The lack of rhenium raw materials sources on the territory of Russia leads to the necessity of this valuable metal recovery from wastes and secondary

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US8956582B2 - Rhenium recovery - Google Patents

Recovery of tungsten and rhenium US4584185A (en) 1985-08-22: 1986-04-22: Gte Products Corporation: Recovery of tungsten and rhenium JPS6470135A (en) * 1987-09-10: 1989-03-15: Tanaka Precious Metal Ind: Dissolving method for alloy containing noble metal by acid JPH07145427A (en ...

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Recovery of Molybdenum and Rhenium Using Selective ...

The base mineral raw materials for recovery of rhenium are solid and liquid by-products of molybdenum, copper, lead and uranium production. Therefore, the recovery of rhenium from them is usually carried out by a hydrometallurgical process.3­6) The hydrometallurgical process for the produc-tion of rhenium from the related by-products can be ...

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recovery of tungsten and rhenium

Recovery of tungsten and rhenium GTE Products Corporation More particularly it relates to a process for recovery of tungsten and rhenium from an impure solution by removing the tungsten from the solution as a solid with hexamine In a process for recovering the metal values from tungsten rhenium alloy scrap an alkaline solution containing ...

More

Recovery of tungsten and rhenium - GTE Products Corporation

More, particularly, it relates to a process for recovery of tungsten and rhenium from an impure solution by removing the tungsten from the solution as a solid with hexamine. In a process for recovering the metal values from tungsten-rhenium alloy scrap, an alkaline solution containing sodium tungstate and sodium perrhenate is generally formed.

More

Recovery and refining of rhenium, tungsten and molybdenum ...

Jul 01, 1982  Recovery and refining of rhenium, tungsten and molybdenum from W-Re, Mo-Re and other alloy scraps

More

Recovery of rhenium from tungsten‑rhenium wire by alkali ...

This work focuses on the efficient recovery of high value rhenium from tungsten‑rhenium wire waste with a mass composition represented by W95Re5.

More

Recovery of rhenium from tungsten‑rhenium wire by alkali ...

Feb 01, 2020  For the recovery of tungsten‑rhenium wire and alloy, mainly oxidation volatilization, alkali melting, oxidation leaching, and electrochemical dissolution are used [, , , ]. Singh Gaur [ 26 ] once investigated the oxidation of W97Re3 at 900 °C to produce Re 2 O 7 and WO 3 , and the former can easily volatilize and absorb by ammonia to form ...

More

(PDF) The improvement of rhenium recovery technology from ...

The lack of rhenium raw materials sources on the territory of Russia leads to the necessity of this valuable metal recovery from wastes and secondary

More

Ion exchange resins tailored for recovery and separation ...

Different processes have been developed and used in industry for such specific tasks as selective rhenium recovery from different process solutions, separation of rhenium from molybdenum, removal of molybdenum impurities from rhenium and tungsten from molybdenum, recovery of molybdenum and tungsten from their concentrates, conversion of sodium ...

More

US8038764B2 - Rhenium recovery from superalloys and ...

A method of recovery and refining of rhenium after oxidizing alloy scrap is discussed in an article “Recovery And Refining Of Rhenium, Tungsten And Molybdenum From W—Re, Mo—Re And Other Alloy Scraps” by B. Heshmatpour et. al. J., The Less-Common Metals, 86, pages 121-128 (1982), which is incorporated herein for reference.

More

US8956582B2 - Rhenium recovery - Google Patents

Recovery of tungsten and rhenium US4584185A (en) 1985-08-22: 1986-04-22: Gte Products Corporation: Recovery of tungsten and rhenium JPS6470135A (en) * 1987-09-10: 1989-03-15: Tanaka Precious Metal Ind: Dissolving method for alloy containing noble metal by acid JPH07145427A (en ...

More

Process for recovering tungsten from tungsten bearing ...

A process is described for recovering tungsten and rhenium from a relatively impure tungsten and rhenium solution. The process consists of: (a) adjusting the pH of the relatively impure solution to from about 9.0 to about 10.0 to precipitate impurities contained therein and form a purified tungsten and rhenium solution, the pH adjustment from a value below about 9.0

More

High-Temperature Recovery of Tungsten after Neutron ...

This is believed due to the formation of rhenium, as a result of thermal-neutron (n, γ) reactions in tungsten. The shifts of the peak temperatures of the lower-temperature recovery regions are believed to result primarily from the weakening of the lattice by rhenium at low temperatures and high thermal-neutron fluences.

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

Nov 01, 2018  The lack of rhenium raw materials sources on the territory of Russia leads to the necessity of this valuable metal recovery from wastes and secondary raw materials, in particular, from tungsten-rhenium alloys. The using of hydrometallurgical and electrochemical technologies is the most promising way to dissolve and recovery these metals in the ...

More

Recovery of Molybdenum and Rhenium Using Selective ...

Recovery of Molybdenum and Rhenium Using Selective Precipitation Method from Molybdenite Roasting Dust in Alkali Leaching Solution Sung-Ho Joo1,2, Young-Uk Kim1, Jin-Gu Kang 2, Ho-Sung Yoon , Dong-Su Kim3 and Shun Myung Shin1,2,+ 1Department of Resource Recycling, University of Science Technology (UST), Daejon 305-350, Korea 2Metal Recovery Group,

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Rhenium - USGS

Rhenium also is associated with copper minerals in sedimentary deposits in Armenia, Kazakhstan, Poland, Russia, and Uzbekistan, where ore is processed for copper recovery and the rhenium-bearing residues are recovered at copper smelters. Substitutes : Substitutes for rhenium in platinum-rhenium catalysts are being evaluated continually.

More

recovery of tungsten and rhenium

Recovery of tungsten and rhenium GTE Products Corporation More particularly it relates to a process for recovery of tungsten and rhenium from an impure solution by removing the tungsten from the solution as a solid with hexamine In a process for recovering the metal values from tungsten rhenium alloy scrap an alkaline solution containing ...

More

Recovery of tungsten and rhenium - GTE Products Corporation

More, particularly, it relates to a process for recovery of tungsten and rhenium from an impure solution by removing the tungsten from the solution as a solid with hexamine. In a process for recovering the metal values from tungsten-rhenium alloy scrap, an alkaline solution containing sodium tungstate and sodium perrhenate is generally formed.

More

Recovery and refining of rhenium, tungsten and molybdenum ...

Jul 01, 1982  Recovery and refining of rhenium, tungsten and molybdenum from W-Re, Mo-Re and other alloy scraps

More

Recovery of rhenium from tungsten‑rhenium wire by alkali ...

This work focuses on the efficient recovery of high value rhenium from tungsten‑rhenium wire waste with a mass composition represented by W95Re5.

More

Recovery of rhenium from tungsten‑rhenium wire by alkali ...

Feb 01, 2020  For the recovery of tungsten‑rhenium wire and alloy, mainly oxidation volatilization, alkali melting, oxidation leaching, and electrochemical dissolution are used [, , , ]. Singh Gaur [ 26 ] once investigated the oxidation of W97Re3 at 900 °C to produce Re 2 O 7 and WO 3 , and the former can easily volatilize and absorb by ammonia to form ...

More

(PDF) The improvement of rhenium recovery technology from ...

The lack of rhenium raw materials sources on the territory of Russia leads to the necessity of this valuable metal recovery from wastes and secondary

More

US8038764B2 - Rhenium recovery from superalloys and ...

A method of recovery and refining of rhenium after oxidizing alloy scrap is discussed in an article “Recovery And Refining Of Rhenium, Tungsten And Molybdenum From W—Re, Mo—Re And Other Alloy Scraps” by B. Heshmatpour et. al. J., The Less-Common Metals, 86, pages 121-128 (1982), which is incorporated herein for reference.

More

Ion exchange resins tailored for recovery and separation ...

Different processes have been developed and used in industry for such specific tasks as selective rhenium recovery from different process solutions, separation of rhenium from molybdenum, removal of molybdenum impurities from rhenium and tungsten from molybdenum, recovery of molybdenum and tungsten from their concentrates, conversion of sodium ...

More

US8956582B2 - Rhenium recovery - Google Patents

Recovery of tungsten and rhenium US4584185A (en) 1985-08-22: 1986-04-22: Gte Products Corporation: Recovery of tungsten and rhenium JPS6470135A (en) * 1987-09-10: 1989-03-15: Tanaka Precious Metal Ind: Dissolving method for alloy containing noble metal by acid JPH07145427A (en ...

More

Process for recovering tungsten from tungsten bearing ...

A process is described for recovering tungsten and rhenium from a relatively impure tungsten and rhenium solution. The process consists of: (a) adjusting the pH of the relatively impure solution to from about 9.0 to about 10.0 to precipitate impurities contained therein and form a purified tungsten and rhenium solution, the pH adjustment from a value below about 9.0

More

High-Temperature Recovery of Tungsten after Neutron ...

This is believed due to the formation of rhenium, as a result of thermal-neutron (n, γ) reactions in tungsten. The shifts of the peak temperatures of the lower-temperature recovery regions are believed to result primarily from the weakening of the lattice by rhenium at low temperatures and high thermal-neutron fluences.

More

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

Nov 01, 2018  The lack of rhenium raw materials sources on the territory of Russia leads to the necessity of this valuable metal recovery from wastes and secondary raw materials, in particular, from tungsten-rhenium alloys. The using of hydrometallurgical and electrochemical technologies is the most promising way to dissolve and recovery these metals in the ...

More

Recovery of Molybdenum and Rhenium Using Selective ...

Recovery of Molybdenum and Rhenium Using Selective Precipitation Method from Molybdenite Roasting Dust in Alkali Leaching Solution Sung-Ho Joo1,2, Young-Uk Kim1, Jin-Gu Kang 2, Ho-Sung Yoon , Dong-Su Kim3 and Shun Myung Shin1,2,+ 1Department of Resource Recycling, University of Science Technology (UST), Daejon 305-350, Korea 2Metal Recovery Group,

More

Rhenium - USGS

Rhenium also is associated with copper minerals in sedimentary deposits in Armenia, Kazakhstan, Poland, Russia, and Uzbekistan, where ore is processed for copper recovery and the rhenium-bearing residues are recovered at copper smelters. Substitutes : Substitutes for rhenium in platinum-rhenium catalysts are being evaluated continually.

More

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